{"id":14554,"date":"2025-04-18T21:18:02","date_gmt":"2025-04-18T13:18:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/14554.html"},"modified":"2025-04-18T21:18:02","modified_gmt":"2025-04-18T13:18:02","slug":"%e5%88%9d%e8%af%86tcp%ef%bc%88%e7%bc%96%e5%86%99%e5%9b%9e%e6%98%be%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/14554.html","title":{"rendered":"\u521d\u8bc6TCP\uff08\u7f16\u5199\u56de\u663e\u670d\u52a1\u5668\uff09"},"content":{"rendered":"<\/p>\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>\u521d\u8bc6TCP&#xff08;\u7f16\u5199\u56de\u663e\u670d\u52a1\u5668&#xff09;<\/li>\n<li>\n<ul>\n<li>TCP\u76f8\u5173\u7684API<\/li>\n<li>\u670d\u52a1\u5668\u4ee3\u7801\u5b9e\u73b0<\/li>\n<li>\u5ba2\u6237\u7aef\u4ee3\u7801\u5b9e\u73b0<\/li>\n<li>\u90e8\u5206\u4ee3\u7801\u89e3\u91ca<\/li>\n<li>\u6ce8\u610f\u4e8b\u9879<\/li>\n<li>\u6548\u679c\u5c55\u793a<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u521d\u8bc6TCP&#xff08;\u7f16\u5199\u56de\u663e\u670d\u52a1\u5668&#xff09;<\/h2>\n<h3>TCP\u76f8\u5173\u7684API<\/h3>\n<p>ServerSocket &#xff1a; \u8fd9\u662fsocket\u7c7b&#xff0c;\u5bf9\u5e94\u5230\u7f51\u5361&#xff0c;\u4f46\u662f\u8fd9\u4e2a\u7c7b\u53ea\u80fd\u7ed9\u670d\u52a1\u5668\u8fdb\u884c\u4f7f\u7528<\/p>\n<p>socket &#xff1a; \u5bf9\u5e94\u5230\u7f51\u5361&#xff0c;\u65e2\u53ef\u4ee5\u7ed9\u670d\u52a1\u5668\u4f7f\u7528&#xff0c;\u53c8\u53ef\u4ee5\u7ed9\u5ba2\u6237\u7aef\u4f7f\u7528<\/p>\n<p>TCP\u662f\u9762\u5411\u5b57\u8282\u6d41\u7684&#xff0c;\u4f20\u8f93\u7684\u57fa\u672c\u5355\u4f4d\u662f\u5b57\u8282<\/p>\n<p>\u6211\u4eec\u7528\u4e00\u4e2a\u56de\u663e\u670d\u52a1\u5668\u6765\u6f14\u793aTCP\u7684\u5de5\u4f5c\u8fc7\u7a0b\u3002\u6240\u8c13\u56de\u663e\u670d\u52a1\u5668\u5c31\u662f\u5ba2\u6237\u7aef\u53d1\u8d77\u4ec0\u4e48\u8bf7\u6c42&#xff0c;\u5c31\u8fd4\u56de\u4ec0\u4e48\u54cd\u5e94\u3002<\/p>\n<h3>\u670d\u52a1\u5668\u4ee3\u7801\u5b9e\u73b0<\/h3>\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\">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\">InputStream<\/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\">OutputStream<\/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><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\">ServerSocket<\/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\">Socket<\/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\">Scanner<\/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>concurrent<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ExecutorService<\/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>concurrent<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Executors<\/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\">TcpEchoServer<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ServerSocket<\/span> serverSocket<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">TcpEchoServer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> port<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        serverSocket<span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ServerSocket<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/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;\u670d\u52a1\u5668\u542f\u52a8!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">ExecutorService<\/span> pool <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Executors<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">newCachedThreadPool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u901a\u8fc7 accept \u65b9\u6cd5\u6765 &#034;\u63a5\u542c\u7535\u8bdd&#034;, \u7136\u540e\u624d\u80fd\u8fdb\u884c\u901a\u4fe1<\/span><br \/>\n            <span class=\"token class-name\">Socket<\/span> clientSocket <span class=\"token operator\">&#061;<\/span> serverSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">accept<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/            Thread t &#061; new Thread(() -&gt; {<\/span><br \/>\n<span class=\"token comment\">\/\/                processConnection(clientSocket);<\/span><br \/>\n<span class=\"token comment\">\/\/            });<\/span><br \/>\n<span class=\"token comment\">\/\/            t.start();<\/span><br \/>\n            pool<span class=\"token punctuation\">.<\/span><span class=\"token function\">submit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Runnable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/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\">run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token function\">processConnection<\/span><span class=\"token punctuation\">(<\/span>clientSocket<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IOException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RuntimeException<\/span><span class=\"token punctuation\">(<\/span>e<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 punctuation\">}<\/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><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">processConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Socket<\/span> clientSocket<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/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\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%s:%d] \u5ba2\u6237\u7aef\u4e0a\u7ebf!\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInetAddress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPort<\/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 keyword\">try<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InputStream<\/span> inputStream<span class=\"token operator\">&#061;<\/span>clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">OutputStream<\/span> outputStream<span class=\"token operator\">&#061;<\/span>clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getOutputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">Scanner<\/span> scanner<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Scanner<\/span><span class=\"token punctuation\">(<\/span>inputStream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>scanner<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasNext<\/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\">\/\/ \u8bfb\u53d6\u5b8c\u6bd5. \u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5, \u5c31\u4f1a\u4ea7\u751f\u8bfb\u53d6\u5b8c\u6bd5.<\/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\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%s:%d] \u5ba2\u6237\u7aef\u4e0b\u7ebf!\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInetAddress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPort<\/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 keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token comment\">\/\/ 1. \u8bfb\u53d6\u8bf7\u6c42\u5e76\u89e3\u6790. \u8fd9\u91cc\u6ce8\u610f\u9690\u85cf\u7684\u7ea6\u5b9a. next \u8bfb\u7684\u65f6\u5019\u8981\u8bfb\u5230\u7a7a\u767d\u7b26\u624d\u4f1a\u7ed3\u675f.<\/span><br \/>\n                <span class=\"token comment\">\/\/    \u56e0\u6b64\u5c31\u8981\u6c42\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u8bf7\u6c42\u5fc5\u987b\u5e26\u6709\u7a7a\u767d\u7b26\u7ed3\u5c3e. \u6bd4\u5982 \\\\n \u6216\u8005\u7a7a\u683c.<\/span><br \/>\n                <span class=\"token class-name\">String<\/span> request<span class=\"token operator\">&#061;<\/span>scanner<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token comment\">\/\/ 2. \u6839\u636e\u8bf7\u6c42\u8ba1\u7b97\u54cd\u5e94<\/span><br \/>\n                <span class=\"token class-name\">String<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token comment\">\/\/ 3. \u628a\u54cd\u5e94\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef<\/span><br \/>\n                <span class=\"token comment\">\/\/    \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5199\u56de, \u4f46\u662f\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u65b9\u4fbf\u7ed9\u8fd4\u56de\u7684\u54cd\u5e94\u4e2d\u6dfb\u52a0 \\\\n<\/span><br \/>\n                <span class=\"token comment\">\/\/ outputStream.write(response.getBytes(), 0, response.getBytes().length);<\/span><br \/>\n                <span class=\"token comment\">\/\/    \u4e5f\u53ef\u4ee5\u7ed9 outputStream \u5957\u4e0a\u4e00\u5c42, \u5b8c\u6210\u66f4\u65b9\u4fbf\u7684\u5199\u5165.<\/span><br \/>\n                <span class=\"token class-name\">PrintWriter<\/span> printWriter<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PrintWriter<\/span><span class=\"token punctuation\">(<\/span>outputStream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                printWriter<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                printWriter<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/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\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%s:%d] req: %s, resp: %s\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInetAddress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> clientSocket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        request<span class=\"token punctuation\">,<\/span> response<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> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IOException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RuntimeException<\/span><span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            clientSocket<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><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> request<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <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\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">TcpEchoServer<\/span> server<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">TcpEchoServer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">9090<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        server<span class=\"token punctuation\">.<\/span><span class=\"token function\">start<\/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<h3>\u5ba2\u6237\u7aef\u4ee3\u7801\u5b9e\u73b0<\/h3>\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 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>net<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Socket<\/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\">Scanner<\/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\">TcpEchoClient<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">Socket<\/span> socket<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">TcpEchoClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> serverIp<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span> serverPort<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6b64\u5904\u53ef\u4ee5\u628a\u8fd9\u91cc\u7684 ip \u548c port \u76f4\u63a5\u4f20\u7ed9 socket \u5bf9\u8c61.<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7531\u4e8e tcp \u662f\u6709\u8fde\u63a5\u7684. \u56e0\u6b64 socket \u91cc\u9762\u5c31\u4f1a\u4fdd\u5b58\u597d\u8fd9\u4fe9\u4fe1\u606f.<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u56e0\u6b64\u6b64\u5904 TcpEchoClient \u7c7b\u5c31\u4e0d\u5fc5\u4fdd\u5b58.<\/span><br \/>\n        socket<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Socket<\/span><span class=\"token punctuation\">(<\/span>serverIp<span class=\"token punctuation\">,<\/span>serverPort<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">start<\/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><span class=\"token string\">&#034;\u5ba2\u6237\u7aef\u542f\u52a8&#xff01;&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InputStream<\/span> inputStream<span class=\"token operator\">&#061;<\/span>socket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">OutputStream<\/span> outputStream<span class=\"token operator\">&#061;<\/span>socket<span class=\"token punctuation\">.<\/span><span class=\"token function\">getOutputStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">Scanner<\/span> scannerConsole<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Scanner<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>in<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">Scanner<\/span> scannerNetwork<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Scanner<\/span><span class=\"token punctuation\">(<\/span>inputStream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">PrintWriter<\/span> writer<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PrintWriter<\/span><span class=\"token punctuation\">(<\/span>outputStream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u8fd9\u91cc\u7684\u6d41\u7a0b\u548c UDP \u7684\u5ba2\u6237\u7aef\u7c7b\u4f3c.<\/span><br \/>\n                <span class=\"token comment\">\/\/ 1. \u4ece\u63a7\u5236\u53f0\u8bfb\u53d6\u8f93\u5165\u7684\u5b57\u7b26\u4e32<\/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;-&gt;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>scannerConsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasNext<\/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 keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token class-name\">String<\/span> request<span class=\"token operator\">&#061;<\/span>scannerConsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token comment\">\/\/2.\u628a\u8bf7\u6c42\u53d1\u7ed9\u670d\u52a1\u5668&#xff0c;\u8fd9\u91cc\u9700\u8981\u4f7f\u7528println\u6765\u53d1\u9001&#xff0c;\u4e3a\u4e86\u8ba9\u53d1\u9001\u7684\u8bf7\u6c42\u672b\u5c3e\u5e26\u6709\\\\n<\/span><br \/>\n                <span class=\"token comment\">\/\/\u8fd9\u91cc\u662f\u548c\u670d\u52a1\u5668\u7684scanner.next\u547c\u5e94\u7684<\/span><br \/>\n                writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token comment\">\/\/3.\u4ece\u670d\u52a1\u5668\u8bfb\u53d6\u54cd\u5e94&#xff0c;\u8fd9\u91cc\u4e5f\u662f\u548c\u670d\u52a1\u5668\u8fd4\u56de\u54cd\u5e94\u7684\u903b\u8f91\u5bf9\u5e94<\/span><br \/>\n                <span class=\"token class-name\">String<\/span> response<span class=\"token operator\">&#061;<\/span>scannerNetwork<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token comment\">\/\/4.\u628a\u54cd\u5e94\u663e\u793a\u51fa\u6765<\/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>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> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IOException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RuntimeException<\/span><span class=\"token punctuation\">(<\/span>e<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\">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\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">TcpEchoClient<\/span> client<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">TcpEchoClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;127.0.0.1&#034;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">9090<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        client<span class=\"token punctuation\">.<\/span><span class=\"token function\">start<\/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<h3>\u90e8\u5206\u4ee3\u7801\u89e3\u91ca<\/h3>\n<p>1.TCP\u662f\u6709\u8fde\u63a5\u7684<\/p>\n<p>\u548c\u6253\u7535\u8bdd\u4e00\u6837&#xff0c;\u9700\u8981\u5ba2\u6237\u7aef\u62e8\u53f7&#xff0c;\u670d\u52a1\u5668\u6765\u63a5\u542c&#xff1a; serverSocket.accept()<\/p>\n<p>accept\u4e5f\u662f\u4e00\u4e2a\u53ef\u80fd\u4f1a\u4ea7\u751f\u963b\u585e\u7684\u64cd\u4f5c\u3002\u5982\u679c\u5f53\u524d\u6ca1\u6709\u5ba2\u6237\u7aef\u8fde\u8fc7\u6765&#xff0c;\u6b64\u65f6accept\u5c31\u4f1a\u963b\u585e<\/p>\n<p>2.\u4e3a\u4f55\u8fd9\u91cc\u8981\u8bbe\u7f6e\u4e24\u4e2asocket&#xff1f;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131759-68025107bae3a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u60f3\u8c61\u4e00\u4e2a\u573a\u666f&#xff1a;\u4f60\u8981\u53bb\u4e70\u623f<\/p>\n<p>ServerSocket<\/p>\n<p>\u628a\u670d\u52a1\u5668\u60f3\u8c61\u6210\u552e\u697c\u5904&#xff0c;ServerSocket \u5c31\u662f\u552e\u697c\u5904\u91cc\u8d1f\u8d23\u7b49\u8d2d\u623f\u8005\u4e0a\u95e8\u7684\u5de5\u4f5c\u4eba\u5458\u3002\u5148\u786e\u5b9a\u597d\u529e\u516c\u5730\u70b9&#xff08;\u7aef\u53e3\u53f7&#xff09;&#xff0c;\u7136\u540e\u901a\u8fc7accept()\u7b49\u8d2d\u623f\u8005\u6765\u3002\u8d2d\u623f\u8005\u4e00\u6765&#xff0c;\u5c31\u5b89\u6392\u51fa\u4e00\u4e2a\u4e13\u95e8\u7684\u8d2d\u623f\u6d3d\u8c08\u5ba4&#xff08;Socket&#xff09;&#xff0c;\u7528\u4e8e\u540e\u7eed\u6c9f\u901a\u4ea4\u6d41\u3002<\/p>\n<p>Socket<\/p>\n<p>Socket \u5c31\u5982\u540c\u90a3\u4e2a\u8d2d\u623f\u6d3d\u8c08\u5ba4&#xff0c;\u662f\u670d\u52a1\u5668&#xff08;\u552e\u697c\u5904&#xff09;\u548c\u5ba2\u6237\u7aef&#xff08;\u8d2d\u623f\u8005&#xff09;\u4ea4\u6d41\u4e92\u52a8\u7684\u4e13\u5c5e\u7a7a\u95f4&#xff0c;\u53cc\u65b9\u5728\u8fd9\u91cc\u6536\u53d1\u4fe1\u606f&#xff0c;\u50cf\u5728\u6d3d\u8c08\u5ba4\u91cc\u5546\u91cf\u4e70\u623f\u7684\u5404\u79cd\u4e8b\u513f\u4e00\u6837&#xff0c;\u5b8c\u6210\u6570\u636e\u901a\u4fe1\u3002<\/p>\n<p>\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u4f1a\u5206\u914d\u4e00\u4e2a\u6d3d\u8c08\u5ba4\u3002<\/p>\n<p>\u8fd9\u6837\u7684\u4f18\u70b9\u662f&#xff1a;<\/p>\n<p>\u5206\u5de5\u660e\u786e&#xff0c;\u652f\u6301\u591a\u5ba2\u6237\u7aef\u8bbf\u95ee<\/p>\n<p>3.TCP\u6709\u8fde\u63a5<\/p>\n<p>TCP socket\u4e2d\u5c31\u4f1a\u4fdd\u5b58\u5bf9\u7aef\u7684\u4fe1\u606f<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131759-68025107e5000.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>4.\u8fd9\u91cc \u7684\u64cd\u4f5c\u76f8\u5f53\u4e8e\u628a\u5b57\u8282\u6d41\u8f6c\u6362\u6210\u5b57\u7b26\u6d41<\/p>\n<p>Java\u4e2d&#xff0c;\u5b57\u8282\u6d41&#xff08;\u5982InputStream\u548cOutputStream&#xff09;\u662f\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u6765\u5904\u7406\u6570\u636e\u7684\u3002\u5b57\u7b26\u6d41&#xff08;\u5982Reader\u548cWriter&#xff09;\u662f\u4ee5\u5b57\u7b26\u4e3a\u5355\u4f4d\u6765\u5904\u7406\u6570\u636e\u7684\u3002<\/p>\n<p>\u8fd9\u91cc\u7684PrintWriter\u662f\u7ee7\u627f\u4e8eWriter\u3002\u8f6c\u6362\u4e00\u4e0b\u65b9\u4fbf\u540e\u7eed\u64cd\u4f5c<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131800-680251081973b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> 5.\u65ad\u5f00\u8fde\u63a5<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131800-68025108313d4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u6ce8\u610f\u4e8b\u9879<\/h3>\n<p>1.\u5ba2\u6237\u7aef\u8f93\u5165\u4e4b\u540e&#xff0c;\u670d\u52a1\u5668\u6ca1\u6709\u54cd\u5e94<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131800-68025108606e4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u4e4b\u6240\u4ee5\u51fa\u73b0\u4e0a\u8ff0\u7684\u60c5\u51b5&#xff0c;\u672c\u8d28\u539f\u56e0\u5728\u4e8ePrintWriter\u5185\u7f6e\u7684\u7f13\u51b2\u533a\u5728\u4f5c\u795f\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u7f13\u51b2\u533a\u5462&#xff1f;\u56e0\u4e3aIO\u64cd\u4f5c\u90fd\u662f\u6bd4\u8f83\u4f4e\u6548\u7684\u64cd\u4f5c&#xff0c;\u5c31\u5e0c\u671b\u80fd\u591f\u8ba9\u4f4e\u6548\u64cd\u4f5c&#xff0c;\u8fdb\u884c\u7684\u5c3d\u91cf\u5c11\u4e00\u4e9b\u3002<\/p>\n<p>\u56e0\u6b64\u5f15\u5165\u7f13\u51b2\u533a&#xff08;\u5185\u5b58&#xff09;&#xff0c;\u5148\u628a\u8981\u5199\u5165\u7f51\u5361\u7684\u6570\u636e\u653e\u5230\u5185\u5b58\u7f13\u51b2\u533a\u4e2d&#xff0c;\u7b49\u5230\u6512\u4e00\u6ce2\u4e4b\u540e\u518d\u7edf\u4e00\u8fdb\u884c\u53d1\u9001&#xff08;\u628a\u591a\u6b21IO\u5408\u5e76\u6210\u4e00\u6b21\u4e86&#xff09;<\/p>\n<p>\u4f46\u662f\u4e5f\u6709\u4e2a\u95ee\u9898&#xff0c;\u5982\u679c\u53d1\u9001\u7684\u6570\u636e\u5f88\u5c11&#xff0c;\u6b64\u65f6\u7531\u4e8e\u7f13\u51b2\u533a\u8fd8\u6ca1\u6ee1&#xff0c;\u6570\u636e\u5c31\u5f85\u5728\u7f13\u51b2\u533a\u91cc&#xff0c;\u6ca1\u6709\u88ab\u771f\u6b63\u88ab\u53d1\u9001\u51fa\u53bb<\/p>\n<p>\u3010\u89e3\u51b3\u65b9\u6cd5\u3011\u624b\u52a8\u5237\u65b0\u7f13\u51b2\u533a&#xff0c;flush\u5237\u65b0\u7f13\u51b2\u533a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131800-68025108756c8.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418131800-680251088e99a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" 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