{"id":22276,"date":"2025-04-19T05:42:40","date_gmt":"2025-04-18T21:42:40","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/22276.html"},"modified":"2025-04-19T05:42:40","modified_gmt":"2025-04-18T21:42:40","slug":"javaweb%e7%ac%94%e8%ae%b0%ef%bc%88web%e3%80%81%e6%9c%8d%e5%8a%a1%e5%99%a8%e3%80%81tomcat%e3%80%81maven%e3%80%81servlet%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/22276.html","title":{"rendered":"JavaWeb\u7b14\u8bb0\uff08web\u3001\u670d\u52a1\u5668\u3001Tomcat\u3001Maven\u3001Servlet\uff09"},"content":{"rendered":"<h2>JavaWeb\u7b14\u8bb0&#xff08;web\u3001\u670d\u52a1\u5668\u3001Tomcat\u3001Maven\u3001Servlet&#xff09;<\/h2>\n<p>Servlet<\/p>\n<p>Maven<\/p>\n<p>\u9ed1\u9a6c\u7a0b\u5e8f\u5458\u65b0\u7248JavaWeb<\/p>\n<h3>\u4e00. \u57fa\u672c\u6982\u5ff5<\/h3>\n<h4>1.1 web\u5f00\u53d1<\/h4>\n<ul>\n<li>web&#xff0c;\u7f51\u9875\u7684\u610f\u601d&#xff0c;www.baidu.com<\/li>\n<li>\u9759\u6001web\n<ul>\n<li>html,css<\/li>\n<li>\u63d0\u4f9b\u7ed9\u6240\u6709\u4eba\u770b\u7684\u6570\u636e\u59cb\u7ec8\u4e0d\u4f1a\u53d8\u5316&#xff01;<\/li>\n<\/ul>\n<\/li>\n<li>\u52a8\u6001web\n<ul>\n<li>\u6dd8\u5b9d&#xff0c;\u51e0\u4e4e\u662f\u6240\u6709\u7684\u7f51\u7ad9&#xff1b;<\/li>\n<li>\u63d0\u4f9b\u7ed9\u6240\u6709\u4eba\u770b\u7684\u6570\u636e\u59cb\u7ec8\u4f1a\u53d1\u751f\u53d8\u5316&#xff0c;\u6bcf\u4e2a\u4eba\u5728\u4e0d\u540c\u7684\u65f6\u95f4&#xff0c;\u4e0d\u540c\u7684\u5730\u70b9\u770b\u5230\u7684\u4fe1\u606f\u5404\u4e0d\u76f8\u540c<\/li>\n<li>\u6280\u672f\u6808&#xff1a;servlet\/ISP&#xff0c;ASP,PHP<\/li>\n<\/ul>\n<\/li>\n<li>\u5728Java\u4e2d&#xff0c;\u52a8\u6001web\u8d44\u6e90\u5f00\u53d1\u7684\u6237\u6570\u7edf\u79f0\u4e3aJavaweb<\/li>\n<\/ul>\n<h4>1.2 web\u5e94\u7528\u7a0b\u5e8f<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214236-6802c74c28ee1.png\" alt=\"image-20230114212049954\" \/><\/p>\n<h4>1.3 \u9759\u6001web<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214236-6802c74c4ab77.png\" alt=\"image-20230114214752579\" \/><\/p>\n<h4>1.4 \u52a8\u6001web<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214236-6802c74c7d130.png\" alt=\"image-20230114220504277\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214236-6802c74cb2c4d.jpg\" alt=\"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74d0e48b.png\" alt=\"image-20230114220552189\" \/><\/p>\n<h3>\u4e8c. web\u670d\u52a1\u5668<\/h3>\n<h4>2.1 \u76f8\u5173\u6280\u672f<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74d31260.png\" alt=\"image-20230115125352335\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74d6855e.png\" alt=\"image-20230115125722275\" \/><\/p>\n<h4>2.2 \u670d\u52a1\u5668<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74d8959e.png\" alt=\"image-20230115130040863\" \/><\/p>\n<h3>\u4e09. Tomcat<\/h3>\n<h4>3.1 \u914d\u7f6e<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74dc7461.png\" alt=\"image-20230115130647973\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214237-6802c74de7a9a.png\" alt=\"image-20230115130831820\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74e12274.png\" alt=\"image-20230115131331483\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74e44783.png\" alt=\"image-20230115131742068\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74e62b85.png\" alt=\"image-20230115131734406\" \/><\/p>\n<h4>3.2 DNS<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74e81a52.png\" alt=\"image-20230115131950486\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74eacd52.png\" alt=\"image-20230115132000125\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214238-6802c74ed2a07.png\" alt=\"image-20230115132008970\" \/><\/p>\n<h4>3.3 \u53d1\u5e03\u4e00\u4e2a\u7f51\u7ad9<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214239-6802c74f116b4.png\" alt=\"image-20230115132626226\" \/><\/p>\n<h3>\u56db. HTTP<\/h3>\n<h4>4.1 \u4ec0\u4e48\u662fHTTP<\/h4>\n<ul>\n<li>\u8d85\u6587\u672c(Hyper text)\u662f\u7528\u8d85\u94fe\u63a5\u7684\u65b9\u6cd5&#xff0c;\u5c06\u5404\u79cd\u4e0d\u540c\u7a7a\u95f4\u7684\u6587\u5b57\u4fe1\u606f\u7ec4\u7ec7\u5728\u4e00\u8d77\u7684\u7f51\u72b6\u6587\u672c<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214239-6802c74f47186.png\" alt=\"image-20230115133229224\" \/><\/p>\n<ul>\n<li>HTTP&#xff08;\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae&#xff09;\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u8bf7\u6c42\u2013\u54cd\u5e94\u534f\u8bae&#xff0c;\u901a\u5e38\u8fd0\u884c\u5728TCP\u4e0a<\/li>\n<li>HTTPS&#xff1a;\u5b89\u5168\u7684<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214239-6802c74f82753.png\" alt=\"image-20230115133418812\" \/><\/p>\n<h4>4.2 HTTP\u8bf7\u6c42\u548c\u54cd\u5e94<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418214239-6802c74fb853d.png\" alt=\"image-20230115134200008\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19uvd1kpyhmiw.png\" alt=\"image-20230115134639377\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19tb5bfg2iuac.png\" alt=\"image-20230115134949200\" \/><\/p>\n<h3>\u4e94. Maven<\/h3>\n<h4>pom\u6587\u4ef6\u914d\u7f6e<\/h4>\n<ul>\n<li>\u52a0\u4e0a\u63d2\u4ef6 \u4f9d\u8d56 propertites<\/li>\n<\/ul>\n<p>&lt;?xml version&#061;&#034;1.0&#034; encoding&#061;&#034;UTF-8&#034;?&gt;<br \/>\n&lt;project xmlns&#061;&#034;http:\/\/maven.apache.org\/POM\/4.0.0&#034;<br \/>\n         xmlns:xsi&#061;&#034;http:\/\/www.w3.org\/2001\/XMLSchema-instance&#034;<br \/>\n         xsi:schemaLocation&#061;&#034;http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd&#034;&gt;<br \/>\n    &lt;modelVersion&gt;4.0.0&lt;\/modelVersion&gt;<\/p>\n<p>    &lt;groupId&gt;org.example&lt;\/groupId&gt;<br \/>\n    &lt;artifactId&gt;filter-demo&lt;\/artifactId&gt;<br \/>\n    &lt;version&gt;1.0-SNAPSHOT&lt;\/version&gt;<\/p>\n<p>    &lt;packaging&gt;war&lt;\/packaging&gt;<\/p>\n<p>    &lt;properties&gt;<br \/>\n        &lt;maven.compiler.source&gt;8&lt;\/maven.compiler.source&gt;<br \/>\n        &lt;maven.compiler.target&gt;8&lt;\/maven.compiler.target&gt;<br \/>\n    &lt;\/properties&gt;<\/p>\n<p>    &lt;dependencies&gt;<\/p>\n<p>        &lt;dependency&gt;<br \/>\n            &lt;groupId&gt;javax.servlet&lt;\/groupId&gt;<br \/>\n            &lt;artifactId&gt;javax.servlet-api&lt;\/artifactId&gt;<br \/>\n            &lt;version&gt;3.1.0&lt;\/version&gt;<br \/>\n            &lt;scope&gt;provided&lt;\/scope&gt;<br \/>\n        &lt;\/dependency&gt;<\/p>\n<p>    &lt;\/dependencies&gt;<\/p>\n<p>    &lt;build&gt;<br \/>\n        &lt;plugins&gt;<br \/>\n            &lt;plugin&gt;<br \/>\n                &lt;groupId&gt;org.apache.tomcat.maven&lt;\/groupId&gt;<br \/>\n                &lt;artifactId&gt;tomcat7-maven-plugin&lt;\/artifactId&gt;<br \/>\n                &lt;version&gt;2.2&lt;\/version&gt;<br \/>\n                &lt;configuration&gt;<br \/>\n                    &lt;port&gt;80&lt;\/port&gt;<br \/>\n                &lt;\/configuration&gt;<br \/>\n            &lt;\/plugin&gt;<br \/>\n        &lt;\/plugins&gt;<br \/>\n    &lt;\/build&gt;<\/p>\n<p>&lt;\/project&gt;<\/p>\n<h4>5.1 \u4e0b\u8f7d\u6b65\u9aa4<\/h4>\n<ul>\n<li>\n<p>MAVEN\u4e0b\u8f7d\u5386\u53f2\u7248\u672c<\/p>\n<\/li>\n<li>\n<p>\u53f2\u4e0a\u6700\u5168\u5b89\u88c5Maven\u6559\u7a0b<\/p>\n<\/li>\n<li>\n<p>\u8fd9\u91cc\u5982\u679c\u6bcf\u6b21\u5efa\u65b0\u7684\u5de5\u7a0b\u7528\u7684\u90fd\u4e0d\u662f\u672c\u5730\u4ed3\u5e93&#xff0c;\u53ef\u4ee5\u5728files-&gt;new project setting \u91cc\u9762\u8bbe\u7f6e<\/p>\n<\/li>\n<li>\n<p>\u521b\u5efa\u65b0\u7684Maven\u9879\u76ee\u9700\u8981\u914d\u7f6e\u4e00\u4e9b\u4e1c\u897f<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19rf5e3kdu4gq.png\" alt=\"image-20230115150500952\" \/><\/p>\n<h4>5.2 IDEA\u4e2d\u914d\u7f6eTomcat<\/h4>\n<ul>\n<li>\u94fe\u63a5<\/li>\n<\/ul>\n<h4>5.3 Jar\u5305<\/h4>\n<ul>\n<li>jar\u5305\u5c31\u662f\u522b\u4eba\u5df2\u7ecf\u5199\u597d\u7684\u4e00\u4e9b\u7c7b&#xff0c;\u7136\u540e\u5c06\u8fd9\u4e9b\u7c7b\u8fdb\u884c\u6253\u5305&#xff0c;\u4f60\u53ef\u4ee5\u5c06\u8fd9\u4e9bjar\u5305\u5f15\u5165\u4f60\u7684\u9879\u76ee\u4e2d&#xff0c;\u7136\u540e\u5c31\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e9bjar\u5305\u4e2d\u7684\u7c7b\u548c\u5c5e\u6027\u4ee5\u53ca\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h4>5.4 \u7b80\u4ecb<\/h4>\n<ul>\n<li>\n<p>\u7528\u4e8e\u4e13\u95e8\u7ba1\u7406\u548c\u6784\u5efaJava\u9879\u76ee\u7684\u5de5\u5177<\/p>\n<ul>\n<li>\n<p>\u63d0\u4f9b\u4e86\u4e00\u5957\u6807\u51c6\u5316\u7684\u9879\u76ee\u7ed3\u6784&#xff1a;\u4e0d\u540cIDE\u4e4b\u95f4\u9879\u76ee\u7684\u76ee\u5f55\u7ed3\u6784\u4e0d\u4e00\u6837&#xff0c;\u90a3\u4e48\u6362\u4e0d\u540c\u7684IDE&#xff08;\u96c6\u6210\u5f00\u53d1\u73af\u5883&#xff09;\u5c31\u4f1a\u6709\u9ebb\u70e6&#xff0c;Maven\u5c31\u89c4\u5b9a\u4e86\u4e00\u5957\u9879\u76ee\u7ed3\u6784&#xff0c;\u65b9\u4fbf\u4f7f\u7528\u4e0d\u540c\u7684IDE\u6765\u7f16\u5199\u4ee3\u7801<img decoding=\"async\" src=\"2025-04-19ebddm2cpnrx.png\" alt=\"image-20230115162949811\" \/><img decoding=\"async\" src=\"2025-04-19x5wzwsovqm0.png\" alt=\"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\" \/><\/p>\n<\/li>\n<li>\n<p>\u63d0\u4f9b\u4e86\u4e00\u5957\u6807\u51c6\u5316\u7684\u6784\u5efa\u6d41\u7a0b&#xff1a;\u7f16\u8bd1\u3001\u6d4b\u8bd5\u3001\u53d1\u5e03\u3001\u6253\u5305&#xff0c;Maven\u63d0\u4f9b\u4e86\u7b80\u5355\u7684\u547d\u4ee4\u6765\u5b8c\u6210\u9879\u76ee\u6784\u5efa&#xff0c;\u53ea\u9700\u8981\u4e00\u4e2a\u547d\u4ee4&#xff0c;Maven\u5c31\u53ef\u4ee5\u628a\u4e00\u4e2a\u9879\u76ee\u8fdb\u884c\u6253\u5305&#xff0c;\u53d8\u6210\u4e00\u4e2ajar\u5305&#xff0c;\u5c06\u6765\u53ea\u8981\u628ajar\u5305\u53d1\u9001\u7ed9\u522b\u4eba&#xff0c;\u522b\u4eba\u5c31\u80fd\u76f4\u63a5\u8fd0\u884c<img decoding=\"async\" src=\"2025-04-19mtj0lnc1ca3.png\" alt=\"image-20230115163716236\" \/><\/p>\n<\/li>\n<li>\n<p>\u63d0\u4f9b\u4e86\u4e00\u5957\u4f9d\u8d56\u7ba1\u7406\u673a\u5236&#xff1a;\u4f9d\u8d56\u7ba1\u7406\u5c31\u662f\u7ba1\u7406\u4f60\u9879\u76ee\u4f9d\u8d56\u7684\u7b2c\u4e09\u65b9\u8d44\u6e90<img decoding=\"async\" src=\"2025-04-19dgqnqzmoveo.png\" alt=\"image-20230115164201770\" \/><img decoding=\"async\" src=\"2025-04-19cudt3fjnrp0.png\" alt=\"image-20230115164148476\" \/><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>5.5 \u4ed3\u5e93<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19y02omrnu1un.png\" alt=\"image-20230115171631051\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19h2wfne4xsrf.png\" alt=\"image-20230115171728933\" \/><\/p>\n<h4>5.6 \u5750\u6807<\/h4>\n<h5>5.6.1 \u6982\u5ff5<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19uwao0vjyus4.png\" alt=\"image-20230115172136888\" \/><\/p>\n<ul>\n<li>Maven\u5750\u6807\u4f5c\u7528&#xff1a;\u4f7f\u7528\u552f\u4e00\u6807\u8bc6&#xff0c;\u552f\u4e00\u6027\u5b9a\u4f4d\u8d44\u6e90\u4f4d\u7f6e&#xff0c;\u901a\u8fc7\u8be5\u6807\u8bc6\u53ef\u4ee5\u5c06\u8d44\u6e90\u7684\u8bc6\u522b\u4e0e\u4e0b\u8f7d\u5de5\u4f5c\u4ea4\u7531\u673a\u5668\u5b8c\u6210<\/li>\n<\/ul>\n<h5>5.6.2 \u5fc5\u8bb0\u7f51\u7ad9<\/h5>\n<ul>\n<li>\n<p>mvnrepository.com<\/p>\n<\/li>\n<li>\n<p>\u4ee5\u540e\u7684jar\u5305\u57fa\u672c\u4e0a\u90fd\u662f\u4ece\u8fd9\u4e2a\u4ed3\u5e93\u4e0b\u8f7d\u7684&#xff0c;\u627e\u5230jar\u5305\u5e76\u4e14\u590d\u5236\u4ee3\u7801\u5373\u53ef<\/p>\n<\/li>\n<\/ul>\n<h4>5.7 \u4f7f\u7528IDEA\u521b\u5efaMaven\u7a0b\u5e8f<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19kgx2sbtyubz.png\" alt=\"image-20230116181813367\" \/><\/p>\n<ul>\n<li>pom.xml<\/li>\n<li>\u3010\u72c2\u795e\u8bf4Java\u3011JavaWeb\u5165\u95e8\u5230\u5b9e\u6218 P6<\/li>\n<\/ul>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>project<\/span> <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>xsi<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.w3.org\/2001\/XMLSchema-instance<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n  <span class=\"token attr-name\"><span class=\"token namespace\">xsi:<\/span>schemaLocation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/maven-v4_0_0.xsd<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u6307\u5b9apom\u7248\u672c\u6a21\u578b&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>modelVersion<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>4.0.0<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>modelVersion<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u7ec4\u7ec7ID&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.example<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u9879\u76eeID&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test02<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u6253\u5305\u65b9\u5f0f&#xff0c;web\u5de5\u7a0b\u6253\u5305\u4e3awar&#xff0c;java\u5de5\u7a0b\u6253\u5305\u4e3ajar&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>packaging<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>war<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>packaging<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u7248\u672c\u53f7&#xff1a;release&#xff08;\u5b8c\u6210\u7248&#xff09;\u3001SNAPSHOT&#xff08;\u5f00\u53d1\u7248&#xff09;&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>1.0-SNAPSHOT<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test02 Maven Webapp<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>http:\/\/maven.apache.org<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u8bbe\u7f6e\u5f53\u524d\u5de5\u7a0b\u7684\u6240\u6709\u4f9d\u8d56&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token comment\">&lt;!&#8211;\u5177\u4f53\u7684\u4f9d\u8d56&#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>3.8.1<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u6784\u5efa&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>build<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token comment\">&lt;!&#8211;\u8bbe\u7f6e\u63d2\u4ef6&#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugins<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token comment\">&lt;!&#8211;\u4ece\u5b98\u7f51\u627e\u7684jar\u5305&#8211;&gt;<\/span><br \/>\n        <span class=\"token comment\">&lt;!&#8211; https:\/\/mvnrepository.com\/artifact\/org.apache.tomcat.maven\/tomcat7-maven-plugin &#8211;&gt;<\/span><\/p>\n<p>          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.apache.tomcat.maven<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>tomcat7-maven-plugin<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>2.1<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token comment\">&lt;!&#8211;\u7aef\u53e3\u53f7&#8211;&gt;<\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>port<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>8080<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>port<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token comment\">&lt;!&#8211;\u8def\u5f84&#xff1a;\/\u53ef\u4ee5\u66f4\u5feb&#8211;&gt;<\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>path<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\/<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>path<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugins<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>build<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>project<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>5.8 \u4f9d\u8d56\u7ba1\u7406<\/h4>\n<h5>5.8.1 \u4f9d\u8d56\u914d\u7f6e<\/h5>\n<ul>\n<li>\u6dfb\u52a0\u4f9d\u8d56\u7684\u6b65\u9aa4\n<ul>\n<li>\u5728dependencies\u4e2d\u914d\u7f6edependency<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19ppsqyuvmtuf.png\" alt=\"image-20230115210942994\" \/><\/p>\n<ul>\n<li>\u5982\u679c\u60f3\u8981\u4f7f\u7528\u522b\u7684\u9879\u76ee,\u9700\u8981\u628a\u8be5\u9879\u76ee\u7684\u5750\u6807\u590d\u5236\u5230\u4e3b\u52a8\u9879\u76ee\u7684dependency\u91cc\u9762<\/li>\n<\/ul>\n<h5>5.8.2 \u4f9d\u8d56\u4f20\u9012<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19tnllelmujec.png\" alt=\"image-20230115212257203\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19joejhrrul4k.png\" alt=\"image-20230115212513708\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19vdvzvnsghaj.png\" alt=\"image-20230115212600414\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19cyzxbbgfs0u.png\" alt=\"image-20230115212621610\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19fbtdt4jivrp.png\" alt=\"image-20230115212746948\" \/><\/p>\n<ul>\n<li>\u53ef\u9009\u4f9d\u8d56\u662f\u4e0d\u60f3\u8ba9\u5f15\u7528\u4f60\u7684\u4eba\u770b\u5230\u4f60\u5f15\u7528\u4e86\u54ea\u4e9b\u4e1c\u897f<\/li>\n<li>\u6392\u9664\u4f9d\u8d56\u662f\u4e0d\u60f3\u770b\u4f60\u5f15\u7528\u7684\u4eba\u5f15\u7528\u4e86\u54ea\u4e9b\u4e1c\u897f\n<ul>\n<li>\u6392\u9664\u4f9d\u8d56\u4e0d\u5199\u7248\u672c\u53f7,\u56e0\u4e3a\u4e0d\u60f3\u770b\u6240\u6709\u5f15\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>5.8.3 \u4f9d\u8d56\u8303\u56f4<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19dzagtgekt4y.png\" alt=\"image-20230115213420457\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19dudlsodjul2.png\" alt=\"image-20230115213622450\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-193wcyycrbjvk.png\" alt=\"image-20230115214157620\" \/><\/p>\n<h5>5.8.4 \u751f\u547d\u5468\u671f\u4e0e\u63d2\u4ef6<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19mcmghofxhuw.png\" alt=\"image-20230115221320398\" \/><\/p>\n<p>\u63d2\u4ef6\u53ef\u4ee5\u7406\u89e3\u4e3a\u5728\u751f\u547d\u5468\u671f\u7684\u67d0\u4e2a\u8282\u70b9\u4e0a\u5e72\u4ec0\u4e48\u4e8b<\/p>\n<p><img decoding=\"async\" src=\"2025-04-19g233pcjbux4.png\" alt=\"image-20230115222005945\" \/><\/p>\n<h3>\u516d. servlet<\/h3>\n<ul>\n<li>\u6ce8\u610f\u624b\u52a8\u5bfc\u5305,\u590d\u5236\u7c98\u8d34tomcat\u7684servlet\u5230lib\u76ee\u5f55\u4e0b<\/li>\n<\/ul>\n<h4>6.1 \u6982\u8ff0<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-192inyw5jppqh.png\" alt=\"image-20230115224258587\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19nfnispusjwp.png\" alt=\"image-20230115224431079\" \/><\/p>\n<h4>6.2 \u5feb\u901f\u5165\u95e8<\/h4>\n<ul>\n<li>\n<p>pom\u6587\u4ef6<\/p>\n<\/li>\n<li> <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>project<\/span> <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>xsi<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.w3.org\/2001\/XMLSchema-instance<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n         <span class=\"token attr-name\"><span class=\"token namespace\">xsi:<\/span>schemaLocation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/maven-v4_0_0.xsd<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u6307\u5b9apom\u7248\u672c\u6a21\u578b&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>modelVersion<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>4.0.0<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>modelVersion<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u7ec4\u7ec7ID&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.example<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u9879\u76eeID&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u9879\u76ee\u540d<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u6253\u5305\u65b9\u5f0f&#xff0c;web\u5de5\u7a0b\u6253\u5305\u4e3awar&#xff0c;java\u5de5\u7a0b\u6253\u5305\u4e3ajar&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>packaging<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>war<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>packaging<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u7248\u672c\u53f7&#xff1a;release&#xff08;\u5b8c\u6210\u7248&#xff09;\u3001SNAPSHOT&#xff08;\u5f00\u53d1\u7248&#xff09;&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>1.0-SNAPSHOT<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test02 Maven Webapp<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>http:\/\/maven.apache.org<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token comment\">&lt;!&#8211;\u8bbe\u7f6e\u5f53\u524d\u5de5\u7a0b\u7684\u6240\u6709\u4f9d\u8d56&#8211;&gt;<\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token comment\">&lt;!&#8211;\u5177\u4f53\u7684\u4f9d\u8d56&#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>3.8.1<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>javax.servlet<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token 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punctuation\">&lt;\/<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugins<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>build<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>project<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<\/li>\n<li><\/li>\n<li>\n<p>\u6b65\u9aa4<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-192we1cowiy4x.png\" alt=\"image-20230115234034768\" \/><\/p>\n<ul>\n<li>\u89e3\u51b3[ERROR] \u4e0d\u518d\u652f\u6301\u6e90\u9009\u9879 6\u3002\u8bf7\u4f7f\u7528 7 \u6216\u66f4\u9ad8\u7248\u672c\u3002\u5373compile failure,\u628a6\u6539\u62107\u5c31\u597d\u4e86<img decoding=\"async\" src=\"2025-04-19j25rnoxewo0.png\" alt=\"image-20230116004709258\" \/><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19w4akroxjt1n.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-190zcsabd0e2l.png\" alt=\"image-20230116004941707\" \/><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>project<\/span> <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>xsi<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.w3.org\/2001\/XMLSchema-instance<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n  <span class=\"token attr-name\"><span class=\"token namespace\">xsi:<\/span>schemaLocation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/maven-v4_0_0.xsd<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>properties<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>maven.compiler.source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>19<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>maven.compiler.source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>maven.compiler.target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>19<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>maven.compiler.target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>properties<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>modelVersion<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>4.0.0<span class=\"token tag\"><span class=\"token tag\"><span class=\"token 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punctuation\">&gt;<\/span><\/span>war<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>packaging<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>1.0-SNAPSHOT<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>web-Demo Maven Webapp<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>name<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>http:\/\/maven.apache.org<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>url<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>junit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>3.8.1<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>test<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>javax.servlet<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>javax.servlet-api<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>3.1.0<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>provided<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>scope<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>build<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugins<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token 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punctuation\">&gt;<\/span><\/span>maven-compiler-plugin<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>1.8<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>1.8<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.apache.tomcat.maven<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>tomcat7-maven-plugin<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>2.2<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.apache.maven.plugins<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>maven-compiler-plugin<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>7<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>source<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n          <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>7<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>target<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>configuration<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugin<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>plugins<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>build<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>project<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n\u8fd9\u91cc\u8fd8\u662f\u4e71\u7801\u7684\u6253\u5f00tomcat\u7684\u914d\u7f6e&#xff0c;\u6709\u4e2avm options&#xff0c;\u52a0\u4e0a-Dfile.encoding&#061;UTF-8<\/p>\n<h4>6.3 \u6267\u884c\u6d41\u7a0b<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19bwlsbxoqwoq.png\" alt=\"image-20230116005411737\" \/><\/p>\n<h4>6.4 \u751f\u547d\u5468\u671f<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-194qj5vvvbysh.png\" alt=\"image-20230116005748014\" \/><\/p>\n<ul>\n<li>\u5982\u679c\u4e0d\u6210\u529f\u67e5\u770b\u81ea\u5df1\u7684\u8def\u5f84&#xff0c;\u5fc5\u987b\u8981\u5728\u81ea\u5df1\u7684\u6a21\u5757\u8def\u5f84\u4e0b\u4f7f\u7528mvn tomcat7:run\u624d\u884c&#xff0c;\u5426\u5219\u4f1a\u627e\u4e0d\u5230tomcat7\u63d2\u4ef6,\u53f3\u952e\u6a21\u5757open in terminal, ctrl&#043;c\u5173\u95ed\u8fdb\u7a0b<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19klkr2wllihh.png\" alt=\"image-20230116011618703\" \/><\/p>\n<h4>6.5 \u65b9\u6cd5\u4ecb\u7ecd<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19vvus2shl5yk.png\" alt=\"image-20230116012153819\" \/><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span>urlPatterns <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/demo3&#034;<\/span><span class=\"token punctuation\">,<\/span>loadOnStartup <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServletDemo3<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Servlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/**<br \/>\n     * \u63d0\u5347\u53d8\u91cf\u4f5c\u7528\u57df<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ServletConfig<\/span> config<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u521d\u59cb\u5316\u65b9\u6cd5<br \/>\n     * 1.\u8c03\u7528\u65f6\u673a:\u9ed8\u8ba4\u60c5\u51b5\u4e0b,servlet\u88ab\u7b2c\u4e00\u6b21\u8bbf\u95ee\u65f6,\u8c03\u7528<br \/>\n     * 2.\u8c03\u7528\u6b21\u6570:1\u6b21<br \/>\n     * &#064;param config<br \/>\n     * &#064;throws ServletException<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletConfig<\/span> config<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5728init\u65b9\u6cd5\u91cc\u9762\u5bf9\u6210\u5458\u53d8\u91cf\u8fdb\u884c\u8d4b\u503c,\u628a\u5f53\u524d\u5c40\u90e8\u53d8\u91cf\u7684\u503c\u8d4b\u503c\u7ed9\u6210\u5458\u53d8\u91cf<\/span><br \/>\n        <span class=\"token comment\">\/\/\u90a3\u4e48\u5c06\u6765\u5728getServletConfig\u65b9\u6cd5\u91cc\u9762\u628aconfig\u8fd4\u56de\u5c31\u53ef\u4ee5\u4e86,\u8fd9\u4e2a\u65f6\u5019\u8fd4\u56de\u7684\u5c31\u662f\u88ab\u5c40\u90e8\u53d8\u91cf\u8d4b\u503c\u7684\u6210\u5458\u53d8\u91cfconfig<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>config <span class=\"token operator\">&#061;<\/span> config<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;init&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">ServletConfig<\/span> <span class=\"token function\">getServletConfig<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> config<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u63d0\u4f9b\u670d\u52a1<br \/>\n     * 1.\u8c03\u7528\u65f6\u673a:\u6bcf\u4e00\u6b21servlet\u88ab\u8bbf\u95ee\u65f6,\u8c03\u7528<br \/>\n     * 2.\u8c03\u7528\u6b21\u6570:\u591a\u6b21<br \/>\n     * &#064;param servletRequest<br \/>\n     * &#064;param servletResponse<br \/>\n     * &#064;throws ServletException<br \/>\n     * &#064;throws IOException<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">service<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;servlet Hello  Java!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     *\u83b7\u5f97\u76f8\u5173\u4fe1\u606f,\u4e00\u822c\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32<br \/>\n     * &#064;return<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getServletInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u9500\u6bc1\u65b9\u6cd5<br \/>\n     * 1.\u8c03\u7528\u65f6\u673a:\u5185\u5b58\u91ca\u653e\u6216\u8005\u670d\u52a1\u5668\u5173\u95ed,servlet\u5bf9\u8c61\u4f1a\u88ab\u9500\u6bc1,\u8c03\u7528<br \/>\n     * 2.\u8c03\u7528\u6b21\u6570:1\u6b21,\u56e0\u4e3a\u5bf9\u8c61\u88ab\u9500\u6bc1\u4e00\u6b21<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">destroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;destroy&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6.6 \u4f53\u7cfb\u7ed3\u6784<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-195hrg5fuochk.png\" alt=\"image-20230116013117771\" \/><\/p>\n<ul>\n<li>\u5728\u6d4f\u89c8\u5668\u76f4\u63a5\u8f93\u5165url\u662fget\u7684\u65b9\u6cd5<\/li>\n<li>\u4f7f\u7528post\u65b9\u6cd5,\u6211\u4eec\u9700\u8981\u6709\u4e00\u4e2a\u8868\u5355<\/li>\n<\/ul>\n<p><span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>en<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>UTF-8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Title<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">action<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\/web-Demo\/demo5<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>post<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>username<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>submit<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyHttpServlet<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Servlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletConfig<\/span> servletConfig<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">ServletConfig<\/span> <span class=\"token function\">getServletConfig<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">service<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6839\u636e\u8bf7\u6c42\u65b9\u5f0f\u4e0d\u540c,\u8fdb\u884c\u5206\u522b\u5904\u7406<\/span><br \/>\n        <span class=\"token class-name\">HttpServletRequest<\/span> request <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span><span class=\"token punctuation\">)<\/span> servletRequest<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u65b9\u5f0f<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> method <span class=\"token operator\">&#061;<\/span> request<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5224\u65ad<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;GET&#034;<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">equals<\/span><span class=\"token punctuation\">(<\/span>method<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/get\u65b9\u5f0f\u7684\u5904\u7406\u903b\u8f91<\/span><br \/>\n            <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>servletRequest<span class=\"token punctuation\">,<\/span>servletResponse<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;POST&#034;<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">equals<\/span><span class=\"token punctuation\">(<\/span>method<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/post\u65b9\u5f0f\u7684\u5904\u7406\u903b\u8f91<\/span><br \/>\n            <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span>servletRequest<span class=\"token punctuation\">,<\/span>servletResponse<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/protected\u8868\u793a\u5b50\u7c7b\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u65b9\u6cd5<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getServletInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">destroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/demo5&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServletDemo5<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">MyHttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;get&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ServletRequest<\/span> servletRequest<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ServletResponse<\/span> servletResponse<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;post&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19xkxiessjwyx.png\" alt=\"image-20230116021525821\" \/><\/p>\n<h4>6.7 urlPattern\u914d\u7f6e<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19sepmrcfqix4.png\" alt=\"image-20230116023915050\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19sm0mbb3au1x.png\" alt=\"image-20230116023934855\" \/><\/p>\n<ul>\n<li>\u6ce8\u610f&#xff1a;\u8fd9\u91cc\u6269\u5c55\u540d\u4f18\u5148\u7ea7\u5c0f\u4e8e \/*<\/li>\n<\/ul>\n<h4>6.8 XML\u914d\u7f6e\u65b9\u5f0f\u7f16\u5199Servlet<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19vxcfke0n4tx.png\" alt=\"image-20230116024226440\" \/><\/p>\n<p>99-109 117 124-127<\/p>\n<h4>6.9 Request<\/h4>\n<ul>\n<li>\u8981\u60f3\u4f7f\u7528tomcat7\u8fd0\u884cmaven,\u9700\u8981\u5728pom\u6587\u4ef6\u4e2d\u914d\u7f6e\u63d2\u4ef6,\u4e0d\u9700\u8981\u4ee3\u7801,\u53ea\u9700\u8981\u624b\u52a8\u5bfc\u5305\u5373\u53ef<\/li>\n<\/ul>\n<h5>6.9.1 request\u7ee7\u627f\u4f53\u7cfb<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19bloduw3sar4.png\" alt=\"image-20230116102639305\" \/><\/p>\n<ul>\n<li>\u6848\u4f8b\n<ul>\n<li>\u8bf4\u660e\u4e86Tomcat\u521b\u5efa\u4e86req\u5bf9\u8c61&#xff0c;\u5e76\u6709\u81ea\u5df1\u7684\u5b9e\u73b0\u7c7b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19wjyfiqbq4kn.png\" alt=\"image-20230116103017446\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-190xddkp42vjd.png\" alt=\"image-20230116103025776\" \/><\/p>\n<h5>6.9.2 request\u83b7\u53d6\u8bf7\u6c42\u6570\u636e<\/h5>\n<h6>6.9.2.1 \u83b7\u53d6\u8bf7\u6c42\u6570\u636e<\/h6>\n<ul>\n<li>\n<p>\u8bf7\u6c42\u6570\u636e\u800c\u5206\u4e3a\u4e09\u90e8\u5206&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u8bf7\u6c42\u884c&#xff1a;\u8bf7\u6c42\u53c2\u6570\/\u534f\u8bae\/\u7248\u672c\u53f7<img decoding=\"async\" src=\"2025-04-19cplhh4hliv5.png\" alt=\"image-20230116103541234\" \/><\/p>\n<ul>\n<li> <span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req1&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RequestDemo1<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u65b9\u5f0f<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> method <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>method<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/GET<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u865a\u62df\u76ee\u5f55<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> contextPath <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getContextPath<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>contextPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\/web-Demo<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6url<\/span><br \/>\n        <span class=\"token class-name\">StringBuffer<\/span> requestURL <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRequestURL<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>requestURL<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/http:\/\/localhost:8080\/web-Demo\/req1<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6uri<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> requestURI <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRequestURI<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>requestURI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\/web-Demo\/req1<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u53c2\u6570(GET\u65b9\u5f0f)<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> queryString <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getQueryString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>queryString<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/username&#061;zhangsan&amp;password&#061;123<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<\/li>\n<li>\n<p><img decoding=\"async\" src=\"2025-04-19mt4o20hrfye.png\" alt=\"image-20230116104549987\" \/><\/p>\n<\/li>\n<li>\n<p><img decoding=\"async\" src=\"2025-04-19ccgby4oz4t1.png\" alt=\"image-20230116104559645\" \/><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8bf7\u6c42\u5934&#xff1a;<img decoding=\"async\" src=\"2025-04-190vqonoumngu.png\" alt=\"image-20230116104750933\" \/><\/p>\n<\/li>\n<li>\n<p>\u8bf7\u6c42\u4f53&#xff1a;<img decoding=\"async\" src=\"2025-04-19j0xepcmpt3b.png\" alt=\"image-20230116104755408\" \/><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">BufferedReader<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req1&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RequestDemo1<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u65b9\u5f0f<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> method <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>method<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/GET<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u865a\u62df\u76ee\u5f55<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> contextPath <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getContextPath<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>contextPath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\/web-Demo<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6url<\/span><br \/>\n        <span class=\"token class-name\">StringBuffer<\/span> requestURL <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRequestURL<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>requestURL<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/http:\/\/localhost:8080\/web-Demo\/req1<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6uri<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> requestURI <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRequestURI<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>requestURI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\/web-Demo\/req1<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u53c2\u6570(GET\u65b9\u5f0f)<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> queryString <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getQueryString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>queryString<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/username&#061;zhangsan&amp;password&#061;123<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u5934user-agent\u83b7\u53d6\u6d4f\u89c8\u5668\u7684\u7248\u672c\u4fe1\u606f<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> agent <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getHeader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;user-agent&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>agent<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8bf7\u6c42\u4f53(\u5199\u4e00\u4e2a\u8868\u5355\u53d8\u6210post)<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u524d\u7aef\u6570\u636e\u901a\u8fc7\u8fd9\u4e2a\u4f20\u9012\u56de\u6765<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6post \u8bf7\u6c42\u4f53:\u8bf7\u6c42\u53c2\u6570,\u901a\u8fc7\u6d41\u7684\u65b9\u5f0f\u83b7\u53d6<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u5b57\u7b26\u8f93\u5165\u6d41(\u56e0\u4e3a\u8fd9\u91cc\u9700\u8981\u8fd4\u56de\u7684\u53c2\u6570\u90fd\u662f\u5b57\u7b26\u4e32\u5f62\u5f0f)<\/span><br \/>\n        <span class=\"token class-name\">BufferedReader<\/span> reader <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getReader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8bfb\u53d6\u6570\u636e<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> line <span class=\"token operator\">&#061;<\/span> reader<span class=\"token punctuation\">.<\/span><span class=\"token function\">readLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>line<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8fd9\u91cc\u8fd9\u4e2a\u6d41\u4e0d\u7528\u5173\u95ed,\u56e0\u4e3a\u8fd9\u4e2a\u6d41\u662freq\u8c03\u7528\u7684,\u5c06\u6765req\u88ab\u9500\u6bc1\u7684\u65f6\u5019,\u6d41\u4f1a\u81ea\u52a8\u5173\u95ed<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\/\/\u4e00\u4e2a\u8868\u5355<br \/>\n<span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>en<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>UTF-8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Title<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token comment\">&lt;!&#8211;\u5c31\u4f1a\u628a\u8868\u5355\u6570\u636e\u901a\u8fc7post\u65b9\u5f0f\u63d0\u4ea4\u5230req1\u91cc\u9762&#8211;&gt;<\/span><br \/>\n<span class=\"token comment\">&lt;!&#8211;\u90a3\u4e48\u5c06\u6765\u5728req1\u91cc\u9762\u5c31\u53ef\u4ee5\u7528dopost\u65b9\u6cd5\u6267\u884c\u76f8\u5e94\u7684\u4e1a\u52a1\u903b\u8f91&#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">action<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\/web-Demo\/req1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>post<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>text<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>username<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>password<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>password<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>submit<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h6>6.9.2.2 \u901a\u7528\u65b9\u5f0f\u83b7\u53d6\u8bf7\u6c42\u53c2\u6570<\/h6>\n<p><img decoding=\"async\" src=\"2025-04-19p3cgyihesxe.png\" alt=\"image-20230116110547567\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19ycy2cgauiop.png\" alt=\"image-20230116111129108\" \/><\/p>\n<ul>\n<li>\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>itheima<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Map<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req2&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RequestDemo2<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/System.out.println(&#034;get&#8230;&#034;);<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u96c6\u5408\u53c2\u6570<\/span><br \/>\n        <span class=\"token class-name\">Map<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span> map <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameterMap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> key <span class=\"token operator\">:<\/span> map<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/\u89c4\u5b9a\u683c\u5f0f\u4e3a:username:zhangsan<\/span><br \/>\n            <span class=\"token comment\">\/\/key\u5c31\u662f\u8868\u5355\u91cc\u9762\u89c4\u5b9a\u7684name<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token operator\">&#043;<\/span><span class=\"token string\">&#034;:&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/\u83b7\u53d6\u503c(\u8fd9\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4)<\/span><br \/>\n            <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> values <span class=\"token operator\">&#061;<\/span> map<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> value <span class=\"token operator\">:<\/span> values<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token operator\">&#043;<\/span><span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/\u6bcf\u6b21\u5faa\u73af\u7ed3\u675f\u540e\u6362\u884c<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;**************************&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/2.\u83b7\u53d6\u53c2\u6570\u503c<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6839\u636ekey\u83b7\u53d6\u53c2\u6570\u503c,\u6570\u7ec4,\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4<\/span><br \/>\n        <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> hobbies <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameterValues<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hobby&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> hobby <span class=\"token operator\">:<\/span> hobbies<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>hobby<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u6839\u636ekey,\u83b7\u53d6\u5355\u4e2a\u503c<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> username  <span class=\"token operator\">&#061;<\/span>req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;username&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> password  <span class=\"token operator\">&#061;<\/span>req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;password&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>username<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">,<\/span>resp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/*System.out.println(&#034;post&#8230;&#034;);<br \/>\n        \/\/\u83b7\u53d6\u96c6\u5408\u53c2\u6570<br \/>\n        Map&lt;String, String[]&gt; map &#061; req.getParameterMap();<br \/>\n        for (String key : map.keySet()) {<br \/>\n            \/\/\u89c4\u5b9a\u683c\u5f0f\u4e3a:username:zhangsan<br \/>\n            \/\/key\u5c31\u662f\u8868\u5355\u91cc\u9762\u89c4\u5b9a\u7684name<br \/>\n            System.out.print(key&#043;&#034;:&#034;);<\/p>\n<p>            \/\/\u83b7\u53d6\u503c(\u8fd9\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4)<br \/>\n            String[] values &#061; map.get(key);<br \/>\n            for (String value : values) {<br \/>\n                System.out.print(value&#043;&#034; &#034;);<br \/>\n            }<\/p>\n<p>            \/\/\u6bcf\u6b21\u5faa\u73af\u7ed3\u675f\u540e\u6362\u884c<br \/>\n            System.out.println();<br \/>\n        }<br \/>\n        System.out.println(&#034;**************************&#034;);<br \/>\n        \/\/2.\u83b7\u53d6\u53c2\u6570\u503c<br \/>\n        \/\/\u6839\u636ekey\u83b7\u53d6\u53c2\u6570\u503c,\u6570\u7ec4,\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4<br \/>\n        String[] hobbies &#061; req.getParameterValues(&#034;hobby&#034;);<br \/>\n        for (String hobby : hobbies) {<br \/>\n            System.out.println(hobby);<br \/>\n        }<\/p>\n<p>        \/\/\u6839\u636ekey,\u83b7\u53d6\u5355\u4e2a\u503c<br \/>\n        String username  &#061;req.getParameter(&#034;username&#034;);<br \/>\n        String password  &#061;req.getParameter(&#034;password&#034;);<br \/>\n        System.out.println(username);<br \/>\n        System.out.println(password);*\/<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>en<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>UTF-8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Title<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token comment\">&lt;!&#8211;\u5c31\u4f1a\u628a\u8868\u5355\u6570\u636e\u901a\u8fc7post\u65b9\u5f0f\u63d0\u4ea4\u5230req2\u91cc\u9762&#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">action<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\/web-Demo\/req2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>post<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>text<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>username<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>br<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>password<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>password<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>br<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>checkbox<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>hobby<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u6e38\u6cf3<br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>checkbox<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>hobby<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u722c\u5c71<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>br<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>submit<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<ul>\n<li>\u5feb\u6377\u952e\u65b0\u5efasevlet\u9879\u76ee,\u5728webapp\u4e0a\u53f3\u952e\u65b0\u5efaservlet,\u5982\u679c\u6ca1\u6709servlet\u9009\u9879,\u5c31\u628asrc\u76ee\u5f55\u6dfb\u52a0\u4e3a\u8d44\u6e90\u76ee\u5f55,\u8ba9\u4ed6\u53d8\u84dd<\/li>\n<li>\u53e6\u5916\u8fd8\u5f97\u5728stucture\u9875\u9762\u5bfc\u5165\u4e00\u4e2atomcat\u7684servlet\u5305\n<ul>\n<li>\u94fe\u63a5<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19lgwri0amoqo.png\" alt=\"img\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19uai4vwszrln.png\" alt=\"img\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19vqintuj0jj4.png\" alt=\"image-20230116152740752\" \/><\/p>\n<ul>\n<li>\u521b\u5efaServlet\u7684\u5c0f\u5de5\u5177,\u53f3\u952eservlet\u5373\u53ef,\u8981\u6ce8\u610f\u8981\u9009\u4e2d\u9ed8\u8ba4\u540d\u5b57serclet\u4e4b\u540e\u518d\u6539,\u4e0d\u7136ok\u4e0d\u4f1a\u53d8\u9ed1<\/li>\n<\/ul>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">main<span class=\"token punctuation\">.<\/span>web<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req4&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RequestDemo4<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">,<\/span> response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h6>6.9.2.3 \u8bf7\u6c42\u53c2\u6570\u4e2d\u6587\u4e71\u7801\u5904\u7406<\/h6>\n<ul>\n<li>\u7f16\u7801\u548c\u89e3\u7801<\/li>\n<\/ul>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">UnsupportedEncodingException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>net<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">URLDecoder<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>net<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">URLEncoder<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">URLDemo<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">UnsupportedEncodingException<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>        <span class=\"token class-name\">String<\/span> username <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/1.URL\u7f16\u7801<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> encode <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">URLEncoder<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">encode<\/span><span class=\"token punctuation\">(<\/span>username<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;utf-8&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>encode<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/%E5%BC%A0%E4%B8%89<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/2.URL\u89e3\u7801<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> decode <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">URLDecoder<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">decode<\/span><span class=\"token punctuation\">(<\/span>encode<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;utf-8&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>decode<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5f20\u4e09<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u89e3\u51b3\u4e71\u7801\u6700\u7ec8\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>sun<span class=\"token punctuation\">.<\/span>net<span class=\"token punctuation\">.<\/span>httpserver<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServer<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>jws<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebService<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>nio<span class=\"token punctuation\">.<\/span>charset<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">StandardCharsets<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> requestdemo1 <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u89e3\u51b3post\u65b9\u5f0f\u4e71\u7801<\/span><br \/>\n        <span class=\"token comment\">\/\/req.setCharacterEncoding(&#034;utf-8&#034;);<\/span><br \/>\n        <span class=\"token comment\">\/\/resp.setCharacterEncoding(&#034;utf-8&#034;);<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6username\u7684\u503c<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> name <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;username&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u89e3\u51b3\u4e71\u7801\u524d: &#034;<\/span><span class=\"token operator\">&#043;<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u89e3\u51b3\u4e71\u7801\u524d: \u00e5\u00bc \u00e4\u00b8<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5148\u5bf9\u4e71\u7801\u8fdb\u884c\u7f16\u7801,\u8f6c\u5316\u4e3a\u5b57\u8282\u6570\u7ec4<\/span><br \/>\n<span class=\"token comment\">\/\/        byte[] bytes &#061; name.getBytes(StandardCharsets.ISO_8859_1);<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5b57\u8282\u6570\u7ec4\u89e3\u7801<\/span><br \/>\n<span class=\"token comment\">\/\/        name &#061; new String(bytes, StandardCharsets.UTF_8);<\/span><br \/>\n<span class=\"token comment\">\/\/        System.out.println(&#034;\u89e3\u51b3\u4e71\u7801\u540e: &#034;&#043;name);<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u5408\u5e76\u4e3a\u4e00\u884c<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5176\u5b9e\u4e0b\u9762\u7684\u53ef\u4ee5\u662fpost\u548cget\u901a\u7528\u89e3\u51b3\u65b9\u5f0f<\/span><br \/>\n        name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">StandardCharsets<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">ISO_8859_1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">StandardCharsets<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">UTF_8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u89e3\u51b3\u4e71\u7801\u540e: &#034;<\/span><span class=\"token operator\">&#043;<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5f20\u4e09<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">,<\/span>resp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u4e8c\u79cd\u89e3\u51b3\u65b9\u5f0f<span class=\"token operator\">:<\/span><br \/>\n\u628apom\u6587\u4ef6\u91cc\u9762\u7684<span class=\"token class-name\">Tomcat<\/span>\u63d2\u4ef6\u6362\u4e00\u4e2a\u66f4\u9ad8\u7ea7\u7684<span class=\"token punctuation\">,<\/span>\u5982\u4e0b\u56fe<span class=\"token punctuation\">,<\/span>\u628atomcat7\u6362\u4e00\u4e2a\u5bfc\u5165<\/p>\n<p><img decoding=\"async\" src=\"2025-04-19usmksvh3jva.png\" alt=\"image-20230116205101542\" \/><\/p>\n<ul>\n<li>post<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19ufedfhrgohj.png\" alt=\"image-20230116194753166\" \/><\/p>\n<ul>\n<li>get<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-190zswnzmqoyj.png\" alt=\"image-20230116202659883\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-195ikd1oepq3c.png\" alt=\"image-20230116204837332\" \/><\/p>\n<h6>6.9.2.4 \u4e00\u4e9b\u96f6\u788e\u95ee\u9898<\/h6>\n<ul>\n<li>\u8fd9\u4e2a\u53ef\u4ee5\u89e3\u51b3\u5bfc\u5165\u5305\u4e4b\u540e\u4efb\u7136\u6ca1\u6709\u53cd\u5e94\u7684\u95ee\u9898,\u4e5f\u53ef\u4ee5\u89e3\u51b3maven\u8fd0\u884c\u7a0b\u5e8f\u540d\u5b57\u4e0d\u662f\u9879\u76ee\u540d\u7684\u95ee\u9898,\u5982\u56fe\u5de6\u4e0b\u89d2M\u56fe\u6807<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19djjx5sg150f.png\" alt=\"image-20230116194859598\" \/><\/p>\n<ul>\n<li>\n<p>\u7f51\u9875\u4e2d\u63d0\u4ea4\u51fa\u73b0404\u7684\u95ee\u9898<\/p>\n<ul>\n<li>\n<p>pom\u4e2d\u6539\u4e00\u4e0b\u9879\u76ee\u540d<img decoding=\"async\" src=\"2025-04-19v3aqnt3fkxf.png\" alt=\"image-20230116195051778\" \/><\/p>\n<\/li>\n<li>\n<p>\u63a7\u5236\u53f0\u91cc\u9762\u9700\u8981\u8f93\u51fa\u8fd9\u4e9b\u4fe1\u606f\u6ce8\u610f8080\u540e\u9762\u7684\u9879\u76ee\u540d<img decoding=\"async\" src=\"2025-04-193zpgcrm3dju.png\" alt=\"image-20230116195146836\" \/><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>404\u8fd8\u6709\u4e00\u4e2a\u53ef\u80fd\u539f\u56e0<\/p>\n<ul>\n<li>\n<p>java\u7c7b\u524d\u9762\u5c11\u52a0\u4e86\u4e00\u4e2a\u6760<img decoding=\"async\" src=\"2025-04-19kiffukfesjj.png\" alt=\"image-20230116195253797\" \/><\/p>\n<\/li>\n<li>\n<p>\u6216\u8005iml\u6587\u4ef6\u4e2d\u5b9a\u4f4d\u4e0d\u51c6\u786e,\u4e00\u5b9a\u662f\u9879\u76ee\u540d\u540e\u9762\u52a0\u4e0ajava\u7c7b\u524d\u9762\u7684webservlet\u6ce8\u91ca<img decoding=\"async\" src=\"2025-04-1940frmb3wnwo.png\" alt=\"image-20230116195345177\" \/><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8fd8\u6709\u65e0\u6cd5\u7ee7\u627fHttpServlet\u539f\u56e0<\/p>\n<ul>\n<li>\u8981\u81ea\u5df1\u5efa\u4e00\u4e2alib\u76ee\u5f55,\u628atomcat\u7684servlet\u5305\u653e\u8fdb\u53bb<img decoding=\"async\" src=\"2025-04-19xvceo1yxnxe.png\" alt=\"image-20230116195508395\" \/><\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5c3d\u91cf\u9009\u62e91.8\u7684JDK<\/p>\n<\/li>\n<li>\n<p>\u62a5\u9519,\u89e3\u51b3\u65b9\u6cd5\u5c31\u662f\u8981\u4e48\u770b&#064;WebServlet\u91cc\u9762\u6709\u6ca1\u6709\u52a0\u659c\u6760,\u8981\u4e48\u770b\u6709\u6ca1\u6709\u590d\u5236\u7c7b\u7684\u65f6\u5019\u91cd\u590d\u4e86<img decoding=\"async\" src=\"2025-04-19jnl1bdihcje.png\" alt=\"image-20230116220051200\" \/><\/p>\n<\/li>\n<\/ul>\n<h5>6.9.3 request\u8bf7\u6c42\u8f6c\u53d1<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19be0hbicymks.png\" alt=\"image-20230116210028227\" \/><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19zrbpghkgszh.png\" alt=\"image-20230116210937409\" \/><\/p>\n<ul>\n<li>\u5b9e\u73b0\u8d44\u6e90\u8f6c\u53d1<\/li>\n<\/ul>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u8bf7\u6c42\u8f6c\u53d1<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req2&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> requestdemo2 <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;demo2&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5b58\u50a8\u6570\u636e<\/span><br \/>\n        req<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAttribute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;msg&#034;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8bf7\u6c42\u8f6c\u53d1<\/span><br \/>\n        req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRequestDispatcher<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req3&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forward<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">,<\/span>resp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">,<\/span>resp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u8bf7\u6c42\u8f6c\u53d1<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/req3&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> requestdemo3 <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;demo3&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u6570\u636e<\/span><br \/>\n        <span class=\"token class-name\">Object<\/span> msg <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getAttribute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;msg&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>msg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">,<\/span>resp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u6548\u679c\u5b9e\u73b0 <img decoding=\"async\" src=\"2025-04-19byywvnuva0j.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19kaoavxtbt4c.png\" alt=\"image-20230116211412275\" \/><\/p>\n<ul>\n<li>\u7279\u70b9\n<ul>\n<li>\u6ce8\u610f\u53ea\u80fd\u662f\u540c\u4e00\u4e2a\u670d\u52a1\u5668<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19bg2gw1kyrt2.png\" alt=\"image-20230116211532309\" \/><\/p>\n<h4>6.10 Response<\/h4>\n<p><img decoding=\"async\" src=\"2025-04-19fvvhee21h05.png\" alt=\"image-20230116211709003\" \/><\/p>\n<h5>6.10.1 \u8bbe\u7f6e\u54cd\u5e94\u6570\u636e\u529f\u80fd\u4ecb\u7ecd<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19htmy31wehu1.png\" alt=\"image-20230116212050013\" \/><\/p>\n<h5>6.10.2 \u5b8c\u6210\u91cd\u5b9a\u5411<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19gldsjeoe1ob.png\" alt=\"image-20230116212508819\" \/><\/p>\n<ul>\n<li>setHeader\u91cc\u9762\u7684location\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684<\/li>\n<\/ul>\n<p>\u8bbe\u7f6e\u54cd\u5e94\u72b6\u6001\u7801 302(\u8fd9\u4e2a\u72b6\u6001\u7801\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684)<\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">response<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/resp1&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ResponseDemo1<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;resp1&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/*\/\/\u91cd\u5b9a\u5411<br \/>\n        \/\/\u4e00.\u7b2c\u4e00\u79cd\u65b9\u5f0f<br \/>\n        \/\/1.\u8bbe\u7f6e\u54cd\u5e94\u72b6\u6001\u7801 302(\u8fd9\u4e2a\u72b6\u6001\u7801\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684)<br \/>\n        response.setStatus(302);<br \/>\n        \/\/2.\u8bbe\u7f6e\u54cd\u5e94\u5934 Location(\u4e0d\u533a\u5206\u5927\u5c0f\u5199),\u540e\u9762\u662f\u8d44\u6e90B\u7684\u8def\u5f84<br \/>\n        response.setHeader(&#034;Location&#034;,&#034;resp2&#034;);*\/<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4e8c.\u7b2c\u4e8c\u79cd\u65b9\u5f0f(\u5fc5\u987b\u52a0\u865a\u62df\u8def\u5f84)<\/span><br \/>\n        <span class=\"token comment\">\/\/response.sendRedirect(&#034;\/javaweb01\/resp2&#034;);<\/span><br \/>\n        response<span class=\"token punctuation\">.<\/span><span class=\"token function\">sendRedirect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;http:\/\/www.baidu.com&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">,<\/span> response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u53ef\u4ee5\u8df3\u8f6c\u5230\u767e\u5ea6<\/span><\/p>\n<ul>\n<li>\u8868\u5355\u63d0\u4ea4\u53ef\u4ee5\u4f7f\u7528\u91cd\u5b9a\u5411&#xff0c;\u9632\u6b62\u91cd\u590d\u63d0\u4ea4<\/li>\n<\/ul>\n<h5>6.10.3 \u91cd\u5b9a\u5411\u548c\u8bf7\u6c42\u8f6c\u53d1\u7684\u533a\u522b<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19nsktba1i0xc.png\" alt=\"image-20230116214150974\" \/><\/p>\n<h5>6.10.4 \u8d44\u6e90\u8def\u5f84\u8bbe\u7f6e\u95ee\u9898<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19elexjvb0jtj.png\" alt=\"image-20230116214610179\" \/><\/p>\n<ul>\n<li>\u52a8\u6001\u83b7\u53d6\u865a\u62df\u76ee\u5f55(\u4e3a\u4e86\u5e94\u5bf9\u539f\u7801\u8def\u5f84\u66f4\u6539\u95ee\u9898)<\/li>\n<\/ul>\n<p><span class=\"token comment\">\/\/\u4e8c.\u7b2c\u4e8c\u79cd\u65b9\u5f0f(\u5fc5\u987b\u52a0\u865a\u62df\u8def\u5f84)<\/span><br \/>\n<span class=\"token comment\">\/\/response.sendRedirect(&#034;http:\/\/www.baidu.com&#034;);<\/span><br \/>\n<span class=\"token comment\">\/\/\u52a8\u6001\u83b7\u53d6\u865a\u62df\u8def\u5f84<\/span><br \/>\n<span class=\"token comment\">\/\/\u56e0\u4e3a\u8fd9\u4e2a\u65b9\u6cd5\u662f\u83b7\u53d6\u8bf7\u6c42\u884c\u4e2d\u76ee\u5f55&#xff0c;\u6240\u4ee5\u7528\u5f97\u662frequest\u83b7\u53d6\u865a\u62df\u8def\u5f84<\/span><br \/>\n<span class=\"token class-name\">String<\/span> contextPath <span class=\"token operator\">&#061;<\/span> request<span class=\"token punctuation\">.<\/span><span class=\"token function\">getContextPath<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nresponse<span class=\"token punctuation\">.<\/span><span class=\"token function\">sendRedirect<\/span><span class=\"token punctuation\">(<\/span>contextPath<span class=\"token operator\">&#043;<\/span><span class=\"token string\">&#034;\/resp2&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>6.10.5 \u54cd\u5e94\u5b57\u7b26\u6570\u636e<\/h5>\n<ul>\n<li>\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">response<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">PrintWriter<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * \u54cd\u5e94\u5b57\u7b26\u6570\u636e:\u8bbe\u7f6e\u5b57\u7b26\u6570\u636e\u7684\u54cd\u5e94\u4f53<br \/>\n *\/<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/resp3&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ResponseDemo3<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u9632\u6b62\u4e2d\u6587\u4e71\u7801,\u6b64\u6b65\u662f\u544a\u8bc9\u6d4f\u89c8\u5668\u89e3\u6790\u7684\u65f6\u5019\u5f53\u505ahtml\u89e3\u6790,\u4e0d\u8981\u5f53\u505a\u7eaf\u6587\u672c<\/span><br \/>\n      response<span class=\"token punctuation\">.<\/span><span class=\"token function\">setContentType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;text\/html;charset&#061;utf-8&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/content-type<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6b64\u6b65\u662f\u544a\u8bc9\u6d4f\u89c8\u5668\u89e3\u6790\u7684\u65f6\u5019\u5f53\u505ahtml\u89e3\u6790,\u4e0d\u8981\u5f53\u505a\u7eaf\u6587\u672c<\/span><br \/>\n        <span class=\"token comment\">\/\/response.setHeader(&#034;content-type&#034;,&#034;text\/html&#034;);<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u5b57\u7b26\u4e32\u8f93\u51fa\u6d41,\u83b7\u53d6\u6253\u5370\u6d41\u5bf9\u8c61,\u76f4\u63a5\u5728\u7f51\u9875\u4e0a\u6253\u5370\u54cd\u5e94\u4fe1\u606f<\/span><br \/>\n        <span class=\"token class-name\">PrintWriter<\/span> writer <span class=\"token operator\">&#061;<\/span> response<span class=\"token punctuation\">.<\/span><span class=\"token function\">getWriter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&lt;h1&gt;\u4e0d\u8981\u4e71\u7801&lt;h1&gt;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">,<\/span> response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19ohhidrsv0yu.png\" alt=\"image-20230116222157997\" \/><\/p>\n<h5>6.10.6 \u54cd\u5e94\u5b57\u8282\u6570\u636e<\/h5>\n<p><img decoding=\"async\" src=\"2025-04-19dr05iqrw3pi.png\" alt=\"image-20230116222221658\" \/><\/p>\n<ul>\n<li>\u4e3a\u4e86\u907f\u514d\u5982\u4e0b\u4ee3\u7801(\u592a\u9ebb\u70e6),\u6211\u4eec\u53ef\u4ee5\u5728pom.xml\u4e2d\u5f15\u5165\u4e00\u4e2acommons-io\u7684\u4f9d\u8d56,\u65b9\u6cd5\u96c6\u6210\u4e86\u62f7\u8d1d\u548c\u8f93\u51fa\u7684\u529f\u80fd<\/li>\n<\/ul>\n<p><span class=\"token comment\">\/\/3.\u5b8c\u6210\u6d41\u7684copy(\u6570\u636e\u5bf9\u62f7)<\/span><br \/>\n<span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> buffer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>len<span class=\"token operator\">&#061;<\/span>fis<span class=\"token punctuation\">.<\/span><span class=\"token function\">read<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    os<span class=\"token punctuation\">.<\/span><span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>commons-io<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>commons-io<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n      <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>2.6<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">response<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>apache<span class=\"token punctuation\">.<\/span>commons<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOUtils<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServletOutputStream<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServlet<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletRequest<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">javax<span class=\"token punctuation\">.<\/span>servlet<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServletResponse<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">FileInputStream<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">IOException<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">PrintWriter<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * \u54cd\u5e94\u5b57\u7b26\u6570\u636e:\u8bbe\u7f6e\u5b57\u7b26\u6570\u636e\u7684\u54cd\u5e94\u4f53<br \/>\n *\/<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/resp4&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ResponseDemo4<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/1.\u8bfb\u53d6\u6587\u4ef6<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5a92\u4f53\u6587\u4ef6\u53ef\u4ee5\u76f4\u63a5\u5199Path from content root<\/span><br \/>\n        <span class=\"token class-name\">FileInputStream<\/span> fis <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">FileInputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;media\/1.jpg&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/2.\u83b7\u53d6response\u5b57\u8282\u8f93\u51fa\u6d41<\/span><br \/>\n        <span class=\"token class-name\">ServletOutputStream<\/span> os <span class=\"token operator\">&#061;<\/span> response<span class=\"token punctuation\">.<\/span><span class=\"token function\">getOutputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/3.\u5b8c\u6210\u6d41\u7684copy(\u6570\u636e\u5bf9\u62f7)<\/span><br \/>\n        <span class=\"token comment\">\/*byte[] buffer &#061; new byte[1024];<br \/>\n        int len &#061; 0;<br \/>\n        while ((len&#061;fis.read(buffer))!&#061;-1){<br \/>\n            os.write(buffer,0,len);<br \/>\n        }*\/<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4e0a\u8ff0\u4ee3\u7801\u53ef\u4ee5\u88ab\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362<\/span><br \/>\n        <span class=\"token comment\">\/\/\u4e0b\u9762\u7684\u65b9\u6cd5\u96c6\u6210\u4e86\u62f7\u8d1d\u548c\u8f93\u51fa\u7684\u529f\u80fd<\/span><br \/>\n        <span class=\"token class-name\">IOUtils<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">copy<\/span><span class=\"token punctuation\">(<\/span>fis<span class=\"token punctuation\">,<\/span>os<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        fis<span class=\"token punctuation\">.<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doPost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> request<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ServletException<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">,<\/span> response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><img decoding=\"async\" src=\"2025-04-19g1d4ebhky0v.png\" alt=\"image-20230116223814194\" \/><\/p>\n<h4>6.11 \u7ec3\u4e60<\/h4>\n<h5>6.11.1 \u62a5\u9519<\/h5>\n<ul>\n<li>\u62a5500:No suitable driver found for\u2026,\u8fd9\u4e2a\u539f\u56e0\u662f\u6ca1\u6709\u628a\u9a71\u52a8\u653e\u5230WEB-INF\u76ee\u5f55\u4e0b,\u53ef\u4ee5\u5728WEB-INF\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2alib\u76ee\u5f55,\u628a\u9a71\u52a8\u590d\u5236\u8fdb\u53bb<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19rpevd0zdb5o.png\" alt=\"image-20230117145443252\" \/><\/p>\n<ul>\n<li>\u62a5\u9519\u539f\u56e0\u662fjava\u4ee3\u7801\u91cc\u7684\u540d\u5b57\u548c\u6570\u636e\u5e93\u5b57\u6bb5\u540d\u5b57\u4e0d\u4e00\u6837<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-19sspggy0lan1.png\" alt=\"image-20230117145757613\" \/> <img decoding=\"async\" src=\"2025-04-1902mnkzaqmio.png\" alt=\"image-20230117145501448\" \/> <img decoding=\"async\" src=\"2025-04-19ec5v3qrstko.png\" alt=\"image-20230117145820752\" \/><\/p>\n<ul>\n<li>\u7a7a\u6307\u9488\u5f02\u5e38\u539f\u56e0<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"2025-04-193w5utrpv5ri.png\" alt=\"image-20230117145833394\" 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