{"id":17960,"date":"2025-04-19T00:23:32","date_gmt":"2025-04-18T16:23:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/17960.html"},"modified":"2025-04-19T00:23:32","modified_gmt":"2025-04-18T16:23:32","slug":"%e6%9e%84%e5%bb%ba%e5%8d%95%e7%ba%bf%e7%a8%8b-web-%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b9%8b%e6%97%85","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/17960.html","title":{"rendered":"\u6784\u5efa\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668\u4e4b\u65c5"},"content":{"rendered":"<h3>1. \u534f\u8bae\u57fa\u7840\u7b80\u4ecb<\/h3>\n<p>\u5728\u6784\u5efa Web \u670d\u52a1\u5668\u65f6&#xff0c;\u6d89\u53ca\u5230\u4e24\u4e2a\u6700\u91cd\u8981\u7684\u534f\u8bae&#xff1a;<\/p>\n<ul>\n<li>TCP&#xff08;\u4f20\u8f93\u63a7\u5236\u534f\u8bae&#xff09;&#xff1a;\u4f5c\u4e3a\u4e00\u4e2a\u5e95\u5c42\u534f\u8bae&#xff0c;TCP \u8d1f\u8d23\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u53ef\u9760\u7684\u5b57\u8282\u6d41\u8fde\u63a5\u3002<\/li>\n<li>HTTP&#xff08;\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae&#xff09;&#xff1a;HTTP \u6784\u5efa\u5728 TCP \u4e4b\u4e0a&#xff0c;\u5b9a\u4e49\u4e86\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u683c\u5f0f\u3002\u5b83\u89c4\u5b9a\u4e86\u5982\u4f55\u8bf7\u6c42\u8d44\u6e90\u4ee5\u53ca\u670d\u52a1\u5668\u5982\u4f55\u8fd4\u56de\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<p>HTTP \u4e0e TCP \u90fd\u9075\u5faa\u201c\u8bf7\u6c42-\u54cd\u5e94\u201d\u7684\u6a21\u5f0f&#xff0c;\u5373\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42&#xff0c;\u670d\u52a1\u5668\u89e3\u6790\u8bf7\u6c42\u5e76\u8fd4\u56de\u54cd\u5e94\u3002<\/p>\n<h3>2. \u76d1\u542c TCP \u8fde\u63a5<\/h3>\n<p>\u9996\u5148&#xff0c;\u6211\u4eec\u9700\u8981\u8ba9\u670d\u52a1\u5668\u76d1\u542c\u4e00\u4e2a TCP \u7aef\u53e3&#xff0c;\u4ee5\u4fbf\u80fd\u591f\u63a5\u6536\u5ba2\u6237\u7aef\u8fde\u63a5\u3002Rust \u6807\u51c6\u5e93\u4e2d\u7684 std::net \u6a21\u5757\u63d0\u4f9b\u4e86 TcpListener \u7c7b\u578b\u6765\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002<\/p>\n<h4>\u521b\u5efa\u9879\u76ee<\/h4>\n<p>\u5728\u7ec8\u7aef\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Rust \u9879\u76ee&#xff1a;<\/p>\n<p>$ <span class=\"token function\">cargo<\/span> new hello<br \/>\n$ <span class=\"token builtin class-name\">cd<\/span> hello<\/p>\n<h4>\u7f16\u5199\u76d1\u542c\u4ee3\u7801<\/h4>\n<p>\u5728 src\/main.rs \u6587\u4ef6\u4e2d&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5199\u4e0b\u5982\u4e0b\u4ee3\u7801\u6765\u76d1\u542c\u672c\u5730\u5730\u5740 127.0.0.1:7878&#xff1a;<\/p>\n<p><span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> listener <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;127.0.0.1:7878&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> stream <span class=\"token keyword\">in<\/span> listener<span class=\"token punctuation\">.<\/span><span class=\"token function\">incoming<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> stream <span class=\"token operator\">&#061;<\/span> stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token macro property\">println!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Connection established!&#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>\u8fd0\u884c\u8be5\u7a0b\u5e8f\u540e&#xff0c;\u6bcf\u5f53\u6709\u5ba2\u6237\u7aef&#xff08;\u6bd4\u5982\u6d4f\u89c8\u5668&#xff09;\u8bbf\u95ee 127.0.0.1:7878 \u65f6&#xff0c;\u7ec8\u7aef\u90fd\u4f1a\u6253\u5370\u51fa\u201cConnection established!\u201d\u3002\u6ce8\u610f&#xff0c;\u7531\u4e8e\u6d4f\u89c8\u5668\u53ef\u80fd\u4f1a\u53d1\u9001\u591a\u6b21\u8bf7\u6c42&#xff08;\u4f8b\u5982\u8bf7\u6c42 favicon.ico&#xff09;&#xff0c;\u4f60\u53ef\u80fd\u4f1a\u770b\u5230\u591a\u6761\u8fde\u63a5\u4fe1\u606f\u3002<\/p>\n<h3>3. \u8bfb\u53d6 HTTP \u8bf7\u6c42<\/h3>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u9700\u8981\u4ece TCP \u6d41\u4e2d\u8bfb\u53d6 HTTP \u8bf7\u6c42\u6570\u636e\u3002\u4e3a\u6b64&#xff0c;\u6211\u4eec\u5c06\u4f7f\u7528 std::io::BufReader \u6765\u589e\u5f3a\u8bfb\u53d6\u4f53\u9a8c&#xff0c;\u5e76\u89e3\u6790\u51fa\u8bf7\u6c42\u4e2d\u7684\u5404\u4e2a\u90e8\u5206\u3002<\/p>\n<h4>\u8bfb\u53d6\u8bf7\u6c42\u5185\u5bb9<\/h4>\n<p>\u4fee\u6539 main.rs \u6587\u4ef6&#xff0c;\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684 handle_connection \u51fd\u6570&#xff0c;\u7528\u4e8e\u8bfb\u53d6\u5e76\u6253\u5370 HTTP \u8bf7\u6c42\u6570\u636e&#xff1a;<\/p>\n<p><span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>io<span class=\"token punctuation\">::<\/span>prelude<span class=\"token punctuation\">::<\/span><\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>io<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> listener <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;127.0.0.1:7878&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> stream <span class=\"token keyword\">in<\/span> listener<span class=\"token punctuation\">.<\/span><span class=\"token function\">incoming<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> stream <span class=\"token operator\">&#061;<\/span> stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span>stream<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\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> http_request<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Vec<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>result<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">take_while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>line<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> <span class=\"token operator\">!<\/span>line<span class=\"token punctuation\">.<\/span><span class=\"token function\">is_empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">collect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token macro property\">println!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Request: {:#?}&#034;<\/span><span class=\"token punctuation\">,<\/span> http_request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5f53\u4f60\u5728\u6d4f\u89c8\u5668\u4e2d\u8bbf\u95ee 127.0.0.1:7878 \u65f6&#xff0c;\u4f60\u5c06\u5728\u7ec8\u7aef\u770b\u5230\u7c7b\u4f3c\u4e0b\u9762\u7684 HTTP \u8bf7\u6c42\u6570\u636e\u8f93\u51fa&#xff1a;<\/p>\n<p>[<br \/>\n    &#034;GET \/ HTTP\/1.1&#034;,<br \/>\n    &#034;Host: 127.0.0.1:7878&#034;,<br \/>\n    &#034;User-Agent: Mozilla\/5.0 &#8230;&#034;,<br \/>\n    \/\/ \u5176\u5b83\u5934\u90e8\u4fe1\u606f&#8230;<br \/>\n]<\/p>\n<h3>4. \u5199\u5165 HTTP \u54cd\u5e94<\/h3>\n<p>HTTP \u54cd\u5e94\u4e5f\u9075\u5faa\u56fa\u5b9a\u683c\u5f0f&#xff1a;<\/p>\n<p>HTTP-Version Status-Code Reason-Phrase CRLF<br \/>\nheaders CRLF<br \/>\nmessage-body<\/p>\n<h4>\u8fd4\u56de\u57fa\u672c\u54cd\u5e94<\/h4>\n<p>\u6211\u4eec\u5148\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u54cd\u5e94&#xff0c;\u5b83\u53ea\u8fd4\u56de\u4e00\u4e2a\u7a7a\u767d\u9875\u9762\u3002\u4fee\u6539 handle_connection \u51fd\u6570&#xff0c;\u5199\u5165\u5982\u4e0b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8bfb\u53d6\u8bf7\u6c42\u6570\u636e&#8230;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6b64\u5904\u7701\u7565\u8bfb\u53d6\u8bf7\u6c42\u90e8\u5206\u7684\u4ee3\u7801<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HTTP\/1.1 200 OK\\\\r\\\\n\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u518d\u6b21\u8fd0\u884c\u670d\u52a1\u5668\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u8bbf\u95ee 127.0.0.1:7878&#xff0c;\u867d\u7136\u9875\u9762\u4e3a\u7a7a&#xff0c;\u4f46\u6d4f\u89c8\u5668\u5c06\u4e0d\u518d\u663e\u793a\u8fde\u63a5\u9519\u8bef\u3002<\/p>\n<h3>5. \u8fd4\u56de\u771f\u5b9e HTML \u9875\u9762<\/h3>\n<p>\u4e3a\u4e86\u8ba9\u6d4f\u89c8\u5668\u663e\u793a\u771f\u5b9e\u5185\u5bb9&#xff0c;\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a HTML \u6587\u4ef6\u5e76\u5728\u54cd\u5e94\u4e2d\u8fd4\u56de\u5b83\u7684\u5185\u5bb9\u3002<\/p>\n<h4>\u521b\u5efa HTML \u6587\u4ef6<\/h4>\n<p>\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a hello.html \u7684\u6587\u4ef6&#xff0c;\u5185\u5bb9\u5982\u4e0b&#xff1a;<\/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>zh-CN<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>\u6b22\u8fce\u6765\u5230 Rust Web \u670d\u52a1\u5668<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>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Hello, Rust!<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u8fd9\u662f\u4e00\u4e2a\u4f7f\u7528 Rust \u7f16\u5199\u7684\u7b80\u5355 Web \u670d\u52a1\u5668\u3002<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>p<\/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<h4>\u8fd4\u56de HTML \u5185\u5bb9<\/h4>\n<p>\u4fee\u6539 handle_connection \u51fd\u6570&#xff0c;\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6 HTML \u5185\u5bb9&#xff0c;\u5e76\u8fd4\u56de\u5e26\u6709 Content-Length \u5934\u7684\u5b8c\u6574 HTTP \u54cd\u5e94&#xff1a;<\/p>\n<p><span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span><\/span>fs<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> http_request<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Vec<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>result<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">take_while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>line<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> <span class=\"token operator\">!<\/span>line<span class=\"token punctuation\">.<\/span><span class=\"token function\">is_empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">collect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> get_root <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;GET \/ HTTP\/1.1&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> <span class=\"token punctuation\">(<\/span>status_line<span class=\"token punctuation\">,<\/span> filename<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">if<\/span> http_request<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> get_root <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;HTTP\/1.1 200 OK&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;hello.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;HTTP\/1.1 404 NOT FOUND&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;404.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span>filename<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token string\">&#034;{}\\\\r\\\\nContent-Length: {}\\\\r\\\\n\\\\r\\\\n{}&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        status_line<span class=\"token punctuation\">,<\/span> length<span class=\"token punctuation\">,<\/span> contents<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u63d0\u793a&#xff1a;\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u6839\u636e\u8bf7\u6c42\u7684\u7b2c\u4e00\u884c\u5224\u65ad\u662f\u5426\u4e3a\u6839\u8def\u5f84 \/ \u7684\u8bf7\u6c42\u3002\u5982\u679c\u662f&#xff0c;\u5219\u8fd4\u56de hello.html \u7684\u5185\u5bb9&#xff1b;\u5426\u5219\u8fd4\u56de\u4e00\u4e2a\u72b6\u6001\u7801\u4e3a 404 \u7684\u54cd\u5e94\u3002\u522b\u5fd8\u4e86\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a 404.html \u6587\u4ef6&#xff0c;\u4f5c\u4e3a\u9519\u8bef\u9875\u9762\u3002<\/p>\n<p>\u4f8b\u5982&#xff0c;\u4f60\u53ef\u4ee5\u521b\u5efa 404.html \u6587\u4ef6&#xff0c;\u5185\u5bb9\u5982\u4e0b&#xff1a;<\/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>zh-CN<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>\u9875\u9762\u672a\u627e\u5230<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>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>404 &#8211; \u9875\u9762\u672a\u627e\u5230<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u5bf9\u4e0d\u8d77&#xff0c;\u4f60\u8bf7\u6c42\u7684\u9875\u9762\u4e0d\u5b58\u5728\u3002<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>p<\/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<h3>6. \u4ee3\u7801\u91cd\u6784<\/h3>\n<p>\u5728\u5b9e\u73b0\u4e86\u57fa\u672c\u7684\u8bf7\u6c42\u5224\u65ad\u540e&#xff0c;\u6211\u4eec\u53d1\u73b0 if \u548c else \u5206\u652f\u4e2d\u6709\u5927\u91cf\u91cd\u590d\u4ee3\u7801\u3002\u4e3a\u4e86\u8ba9\u4ee3\u7801\u66f4\u7b80\u6d01&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5c06\u4ec5\u6709\u5dee\u5f02\u7684\u90e8\u5206&#xff08;\u72b6\u6001\u884c\u548c\u6587\u4ef6\u540d&#xff09;\u63d0\u53d6\u51fa\u6765&#xff0c;\u7136\u540e\u7edf\u4e00\u4f7f\u7528\u8fd9\u4e9b\u53d8\u91cf\u6765\u8bfb\u53d6\u6587\u4ef6\u548c\u5199\u5165\u54cd\u5e94\u3002<\/p>\n<p>\u91cd\u6784\u540e\u7684\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> request_line <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> <span class=\"token punctuation\">(<\/span>status_line<span class=\"token punctuation\">,<\/span> filename<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">if<\/span> request_line <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;GET \/ HTTP\/1.1&#034;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;HTTP\/1.1 200 OK&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;hello.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;HTTP\/1.1 404 NOT FOUND&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;404.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span>filename<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token string\">&#034;{}\\\\r\\\\nContent-Length: {}\\\\r\\\\n\\\\r\\\\n{}&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        status_line<span class=\"token punctuation\">,<\/span> length<span class=\"token punctuation\">,<\/span> contents<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u901a\u8fc7\u8fd9\u79cd\u91cd\u6784&#xff0c;\u6211\u4eec\u4e0d\u4ec5\u51cf\u5c11\u4e86\u91cd\u590d\u4ee3\u7801&#xff0c;\u4e5f\u8ba9\u903b\u8f91\u66f4\u52a0\u6e05\u6670\u3002\u5982\u679c\u5c06\u6765\u9700\u8981\u4fee\u6539\u6587\u4ef6\u8bfb\u53d6\u6216\u54cd\u5e94\u751f\u6210\u7684\u7ec6\u8282&#xff0c;\u53ea\u9700\u5728\u4e00\u5904\u8fdb\u884c\u8c03\u6574\u5373\u53ef\u3002<\/p>\n<h3>7. \u603b\u7ed3\u4e0e\u5c55\u671b<\/h3>\n<p>\u5728\u672c\u6587\u4e2d&#xff0c;\u6211\u4eec\u4ece\u96f6\u5f00\u59cb\u6784\u5efa\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668&#xff0c;\u6db5\u76d6\u4e86\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u6b65\u9aa4&#xff1a;<\/p>\n<ul>\n<li>\u76d1\u542c TCP \u8fde\u63a5&#xff1a;\u4f7f\u7528 TcpListener \u7ed1\u5b9a\u5230\u6307\u5b9a\u5730\u5740\u548c\u7aef\u53e3\u3002<\/li>\n<li>\u8bfb\u53d6 HTTP \u8bf7\u6c42&#xff1a;\u501f\u52a9 BufReader \u5c06 TCP 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