{"id":19430,"date":"2025-04-19T01:47:38","date_gmt":"2025-04-18T17:47:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/19430.html"},"modified":"2025-04-19T01:47:38","modified_gmt":"2025-04-18T17:47:38","slug":"%e5%88%9d%e5%a7%8bjavaee%e7%af%87-%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%ef%bc%882%ef%bc%89%ef%bc%9a%e4%ba%86%e8%a7%a3%e5%a5%97%e6%8e%a5%e5%ad%97%ef%bc%8c%e4%bb%8e0%e5%88%b01%e5%ae%9e","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/19430.html","title":{"rendered":"\u521d\u59cbJavaEE\u7bc7 \u2014\u2014 \u7f51\u7edc\u7f16\u7a0b\uff082\uff09\uff1a\u4e86\u89e3\u5957\u63a5\u5b57\uff0c\u4ece0\u52301\u5b9e\u73b0\u56de\u663e\u670d\u52a1\u5668"},"content":{"rendered":"<p>\u00a0\u627e\u5f80\u671f\u6587\u7ae0\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u672c\u671f\u6587\u7ae0\u4e2d\u4e0d\u61c2\u7684\u77e5\u8bc6\u70b9&#xff1a;<\/p>\n<p>\u4e2a\u4eba\u4e3b\u9875&#xff1a;\u6211\u8981\u5b66\u7f16\u7a0b\u7a0b(\u0ca5_\u0ca5)-CSDN\u535a\u5ba2<\/p>\n<p>\u6240\u5c5e\u4e13\u680f&#xff1a;JavaEE<\/p>\n<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"%C2%A0TCP%20%E4%B8%8E%20UDP-toc\" style=\"margin-left:0px\">\u00a0TCP \u4e0e UDP<\/p>\n<p id=\"Socket%E5%A5%97%E6%8E%A5%E5%AD%97-toc\" style=\"margin-left:0px\">Socket\u5957\u63a5\u5b57<\/p>\n<p id=\"UDP-toc\" style=\"margin-left:40px\">UDP<\/p>\n<p id=\"TCP-toc\" style=\"margin-left:40px\">TCP<\/p>\n<hr id=\"hr-toc\" \/>\n<p>\u7f51\u7edc\u57fa\u7840\u77e5\u8bc6\u00a0 \u00a0\u5728\u4e00\u7bc7\u6587\u7ae0\u4e2d&#xff0c;\u6211\u4eec\u4e86\u89e3\u4e86\u57fa\u7840\u7684\u7f51\u7edc\u77e5\u8bc6&#xff0c;\u7f51\u7edc\u7684\u51fa\u73b0\u5c31\u662f\u4e3a\u4e86\u4e0d\u540c\u673a\u5668\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u4ece\u800c\u5b9e\u73b0\u8d44\u6e90\u5171\u4eab\u3002\u73b0\u5982\u4eca\u6211\u4eec\u4f7f\u7528\u7f51\u7edc\u8fdb\u884c\u7684\u4e00\u7cfb\u5217\u64cd\u4f5c&#xff0c;\u6253\u6e38\u620f\u3001\u7f51\u4e0a\u8d2d\u7269\u3001\u7f51\u4e0a\u804a\u5929\u7b49\u90fd\u662f\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u901a\u4fe1&#xff0c;\u51c6\u786e\u7684\u6765\u8bf4\u662f\u591a\u4e2a\u5ba2\u6237\u7aef\u4e4b\u95f4\u901a\u8fc7\u670d\u52a1\u5668\u8fd9\u4e2a\u5e73\u53f0\u6765\u5b9e\u73b0\u901a\u4fe1\u3002\u800c\u4eca\u5929\u6211\u4eec\u5c31\u662f\u8981\u6765\u5b9e\u73b0\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u3002\u5728\u6b64\u4e4b\u524d\u8fd8\u5f97\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u3002<\/p>\n<h2 id=\"%C2%A0TCP%20%E4%B8%8E%20UDP\"><span style=\"color:#fe2c24\">\u00a0TCP \u4e0e UDP<\/span><\/h2>\n<p>\u4e0a\u6587\u4e86\u89e3\u4e86 TCP\/IP \u4e94\u5c42\u534f\u8bae\u7684\u57fa\u672c\u5206\u5c42&#xff0c;\u5728\u4ee5\u540e\u7684\u65e5\u5e38\u5f00\u53d1\u4e2d&#xff0c;\u5199\u7684\u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u90fd\u662f\u5de5\u4f5c\u5728\u5e94\u7528\u5c42&#xff0c;\u800c\u5e94\u7528\u5c42\u662f\u57fa\u4e8e\u4f20\u8f93\u5c42\u7684&#xff0c;\u6211\u4eec\u4e5f\u662f\u9700\u8981\u4e86\u89e3\u4f20\u8f93\u5c42\u7684\u4f20\u8f93\u534f\u8bae\u7684&#xff0c;\u4e3b\u8981\u662f\u4e24\u4e2a\u534f\u8bae&#xff1a;TCP\u534f\u8bae \u4e0e UDP \u534f\u8bae\u3002\u00a0<\/p>\n<p>TCP \u662f \u6709\u8fde\u63a5\u3001\u53ef\u9760\u4f20\u8f93\u3001\u9762\u5411\u5b57\u8282\u6d41\u3001\u5168\u53cc\u5de5\u3002<\/p>\n<p>UDP \u662f \u65e0\u8fde\u63a5\u3001\u4e0d\u53ef\u9760\u4f20\u8f93\u3001\u9762\u5411\u6570\u636e\u62a5\u3001\u5168\u53cc\u5de5\u3002<\/p>\n<\/p>\n<p>\u8fde\u63a5&#xff1a;\u662f\u6307\u901a\u4fe1\u53cc\u65b9\u662f\u5426\u4f1a\u4fdd\u5b58\u5bf9\u65b9\u7684\u4fe1\u606f\u3002\u6709\u8fde\u63a5\u5c31\u8bf4\u660e&#xff0c;\u901a\u4fe1\u7684\u53cc\u65b9\u4f1a\u4fdd\u5b58\u5bf9\u65b9\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u53ef\u9760\u4f20\u8f93&#xff1a;\u7531\u4e8e\u6570\u636e\u5728\u7ecf\u8fc7\u5c01\u88c5\u4e4b\u540e&#xff0c;\u662f\u901a\u8fc7\u7f51\u5361\u5c06\u4e8c\u8fdb\u5236\u7684\u6570\u636e\u4f20\u8f93\u7ed9\u53e6\u4e00\u65b9\u7684&#xff0c;\u8fd9\u91cc\u7684\u4e8c\u8fdb\u5236\u662f\u901a\u8fc7\u7535\u4fe1\u53f7\u6216\u8005\u5149\u4fe1\u53f7\u4f20\u64ad\u7684&#xff0c;\u800c\u8fd9\u79cd\u4f20\u64ad\u65b9\u5f0f\u80af\u5b9a\u662f\u4f1a\u6536\u5230\u5916\u754c\u7684\u5f71\u54cd&#xff0c;\u4f8b\u5982&#xff0c;\u592a\u9633\u7206\u53d1\u8000\u6591\u7b49\u60c5\u51b5\u5c31\u4f1a\u5f71\u54cd\u6570\u636e\u7684\u4f20\u8f93\u3002\u56e0\u6b64\u6570\u636e\u4f20\u8f93\u7684\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u4f1a\u5931\u8d25&#xff0c;\u5982\u679c\u4f20\u8f93\u5931\u8d25\u4e4b\u540e&#xff0c;\u6709\u63d0\u9192\u91cd\u65b0\u4f20\u8f93\u7684\u8bdd&#xff0c;\u8fd9\u5c31\u662f\u53ef\u9760\u4f20\u8f93&#xff0c;\u53cd\u4e4b&#xff0c;\u4f20\u8f93\u4e4b\u540e\u4e0d\u7ba1\u4e0d\u987e\u4e86&#xff0c;\u8fd9\u5c31\u662f\u4e0d\u53ef\u9760\u4f20\u8f93\u3002<\/p>\n<p>\u9762\u5411\u5b57\u8282\u6d41\u4e0e\u9762\u5411\u6570\u636e\u62a5\u662f\u6307\u4e24\u8005\u7684\u6570\u636e\u4f20\u8f93\u7684\u65b9\u5f0f\u4e0d\u4e00\u6837&#xff0c;\u867d\u7136\u6700\u7ec8\u901a\u8fc7\u7f51\u5361\u51fa\u53bb\u7684\u6570\u636e\u90fd\u662f\u4e8c\u8fdb\u5236\u7684&#xff0c;\u4f46\u662f\u5728\u901a\u8fc7\u4f20\u8f93\u5c42\u65f6&#xff0c;\u4f1a\u6839\u636e\u534f\u8bae\u7684\u4e0d\u540c&#xff0c;\u800c\u9009\u62e9\u4e0d\u540c\u7684\u65b9\u5f0f\u3002\u4f7f\u7528UDP\u4f20\u8f93\u65f6&#xff0c;\u5c31\u9700\u8981\u5c06\u6570\u636e\u5c01\u88c5\u6210\u6570\u636e\u5305\u7684\u5f62\u5f0f\u7ee7\u7eed\u4f20\u7ed9\u4e0b\u4e00\u5c42\u3002<\/p>\n<p>\u5168\u53cc\u5de5&#xff1a;\u662f\u6307\u6570\u636e\u65e2\u53ef\u4ee5\u4ece\u4e00\u65b9\u4f20\u5411\u53e6\u4e00\u65b9&#xff0c;\u4e5f\u53ef\u4ee5\u4ece\u53e6\u4e00\u65b9\u4f20\u5411\u8fd9\u4e00\u65b9&#xff0c;\u4e5f\u5c31\u662f\u548c\u8f66\u6d41\u91cf\u4e00\u6837&#xff0c;\u65e2\u6709\u4ece\u5de6\u5230\u53f3\u7684\u8f66\u6d41&#xff0c;\u4e5f\u6709\u4ece\u53f3\u5230\u5de6\u7684\u8f66\u6d41\u3002\u4e0e\u4e4b\u76f8\u53cd\u7684\u4e00\u4e2a\u540d\u8bcd\u662f&#xff1a;\u534a\u53cc\u5de5&#xff0c;\u8fd9\u4e2a\u5c31\u548c\u7ba1\u4e2d\u7684\u6c34\u6d41\u4e00\u6837&#xff0c;\u53ea\u80fd\u4ece\u4e00\u65b9\u6d41\u5411\u53e6\u4e00\u65b9&#xff0c;\u800c\u4e0d\u80fd\u4ece\u540c\u65f6\u6709\u4e24\u4e2a\u65b9\u5411\u7684\u6c34\u6d41\u3002<\/p>\n<p>\u4e86\u89e3\u4e86TCP \u4e0e UDP \u7684\u57fa\u672c\u70b9\u4e4b\u540e&#xff0c;\u8fd8\u9700\u8981\u4e86\u89e3 JVM\u5bf9\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684API\u5c01\u88c5\u540e\u7684\u7ed3\u679c&#xff0c;\u6bd5\u7adf\u6211\u4eec\u901a\u8fc7Java\u4ee3\u7801\u6765\u7f16\u5199\u7f51\u7edc\u7f16\u7a0b\u65f6&#xff0c;\u662f\u76f4\u63a5\u4f7f\u7528Java\u6807\u51c6\u5e93\u4e2d\u63d0\u4f9b\u7684\u7c7b\u3002<\/p>\n<h2 id=\"Socket%E5%A5%97%E6%8E%A5%E5%AD%97\"><span style=\"color:#fe2c24\">Socket\u5957\u63a5\u5b57<\/span><\/h2>\n<p>Socket\u5957\u63a5\u5b57&#xff0c;\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7528\u4e8e\u7f51\u7edc\u901a\u4fe1\u7684\u6280\u672f&#xff0c;\u662f\u57fa\u4e8eTCP\/IP\u534f\u8bae\u7684\u7f51\u7edc\u901a\u4fe1\u7684\u57fa\u672c\u64cd\u4f5c\u5355\u5143\u3002 \u57fa\u4e8eSocket\u5957\u63a5\u5b57\u7684\u7f51\u7edc\u7a0b\u5e8f\u5f00\u53d1\u5c31\u662f\u7f51\u7edc\u7f16\u7a0b\u3002\u800c\u7ecf\u8fc7JVM\u5c01\u88c5\u4e4b\u540e&#xff0c;\u5c31\u4e3b\u8981\u662f\u9488\u5bf9 TCP \u548c UDP \u7684\u3002<\/p>\n<h3 id=\"UDP\"><span style=\"color:#38d8f0\">UDP<\/span><\/h3>\n<p>java\u4e2d\u4f7f\u7528UDP\u534f\u8bae\u901a\u4fe1&#xff0c;\u4e3b\u8981\u57fa\u4e8eDatagramSocket \u7c7b\u6765\u521b\u5efa\u6570\u636e\u62a5\u5957\u63a5\u5b57&#xff0c;\u5e76\u4f7f\u7528 DatagramPacket\u4f5c\u4e3a\u53d1\u9001\u6216\u63a5\u6536\u7684UDP\u6570\u636e\u62a5\u3002<\/p>\n<p>\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4e86\u65b9\u9762\u66f4\u597d\u7684\u7ba1\u7406\u7cfb\u7edf\u8d44\u6e90&#xff08;\u5305\u62ec\u786c\u4ef6\u8d44\u6e90&#xff09;&#xff0c;\u6240\u4ee5\u64cd\u4f5c\u7cfb\u7edf\u91c7\u7528\u4e86\u6587\u4ef6\u7ba1\u7406\u7684\u65b9\u5f0f\u6765\u7ba1\u7406\u8fd9\u4e9b\u8d44\u6e90&#xff0c;\u8fd9\u4e5f\u5c31\u610f\u5473\u7740\u67d0\u4e2a\u5e94\u7528\u7a0b\u5e8f\u53bb\u4f7f\u7528\u8fd9\u4e9b\u8d44\u6e90\u65f6&#xff0c;\u5c31\u548c\u4f7f\u7528\u6587\u4ef6\u8d44\u6e90\u6ca1\u4ec0\u4e48\u533a\u522b\u4e86&#xff0c;\u4e5f\u5c31\u662f\u6253\u5f00\u6587\u4ef6\u3001\u4f7f\u7528\u6587\u4ef6\u3001\u5173\u95ed\u6587\u4ef6\u3002\u56e0\u6b64\u7f51\u5361\u8d44\u6e90\u7684\u4f7f\u7528\u4e5f\u662f\u5982\u6b64\u3002<\/p>\n<p>1\u3001\u6253\u5f00\u7f51\u5361\u8d44\u6e90<\/p>\n<p>2\u3001\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c<\/p>\n<p>3\u3001\u5173\u95ed\u7f51\u5361\u8d44\u6e90<\/p>\n<p>\u4e0b\u9762\u5c31\u6765\u5b66\u4e60\u76f8\u5173\u65b9\u6cd5&#xff1a;<\/p>\n<p>DatagramSocket\u00a0\u662fUDP Socket&#xff0c;\u7528\u4e8e\u53d1\u9001\u548c\u63a5\u6536UDP\u6570\u636e\u62a5\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u6784\u9020\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>DatagramSocket()<\/td>\n<td>\u521b\u5efa\u4e00\u4e2aUDP\u6570\u636e\u62a5\u5957\u63a5\u5b57\u7684Socket&#xff0c;\u7ed1\u5b9a\u5230\u672c\u673a\u4efb\u610f\u4e00\u4e2a\u968f\u673a\u7aef\u53e3 (\u4e00\u822c\u7528\u4e8e\u5ba2\u6237\u7aef)<\/td>\n<\/tr>\n<tr>\n<td>DatagramSocket(int port)<\/td>\n<td>\u521b\u5efa\u4e00\u4e2aUDP\u6570\u636e\u62a5\u5957\u63a5\u5b57\u7684Socket&#xff0c;\u7ed1\u5b9a\u5230\u672c\u673a\u6307\u5b9a\u7684\u7aef\u53e3 (\u4e00\u822c\u7528\u4e8e\u670d\u52a1\u5668)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u666e\u901a\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>void receive(DatagramPacket p)<\/td>\n<td>\u4ece\u6b64\u5957\u63a5\u5b57\u63a5\u6536\u6570\u636e\u62a5&#xff08;\u5982\u679c\u6ca1\u6709\u63a5\u6536\u5230\u6570\u636e\u62a5&#xff0c;\u8be5\u65b9\u6cd5\u4f1a\u963b\u585e\u7b49\u5f85)<\/td>\n<\/tr>\n<tr>\n<td>void send(DatagramPacket p)<\/td>\n<td>\u4ece\u6b64\u5957\u63a5\u5b57\u53d1\u9001\u6570\u636e\u62a5\u5305&#xff08;\u4e0d\u4f1a\u963b\u585e\u7b49\u5f85&#xff0c;\u76f4\u63a5\u53d1\u9001)<\/td>\n<\/tr>\n<tr>\n<td>void close()<\/td>\n<td>\u5173\u95ed\u6b64\u6570\u636e\u62a5\u5957\u63a5\u5b57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u91cc\u7684\u6570\u636e\u62a5\u5957\u63a5\u5b57\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u7f51\u5361\u8d44\u6e90&#xff0c;receive\u65b9\u6cd5\u5c31\u662f\u901a\u8fc7\u7f51\u5361\u63a5\u6536\u6570\u636e&#xff0c;send\u65b9\u6cd5\u5c31\u662f\u901a\u8fc7\u7f51\u5361\u53d1\u9001\u6570\u636e\u3002\u00a0\u6784\u9020\u65b9\u6cd5\u662f\u5728\u6253\u5f00\u7f51\u5361\u8d44\u6e90&#xff0c;close\u65b9\u6cd5\u5c31\u662f\u5728\u5173\u95ed\u7f51\u5361\u8d44\u6e90\u3002<\/p>\n<p>DatagramPacket\u662fUDP Socket\u53d1\u9001\u548c\u63a5\u6536\u7684\u6570\u636e\u62a5\u3002<\/p>\n<p>\u6ce8\u610f\u533a\u5206\u4e0a\u8ff0\u4e24\u4e2a\u6982\u5ff5&#xff1a;DatagramSocket \u662f\u7528\u6765\u4f20\u9001\u4e0e\u63a5\u6536\u6570\u636e\u62a5\u7684&#xff0c;\u800cDatagramPacket \u662f\u6570\u636e\u62a5\u672c\u8eab\u7684\u4e00\u5c42\u5c01\u88c5&#xff0c;\u7b80\u5355\u7406\u89e3\u5c31\u662f\u6570\u636e\u62a5\u672c\u8eab\u3002\u751f\u6d3b\u4e2d\u7684\u4f8b\u5b50&#xff0c;\u5c31\u662fDatagramSocket \u662f\u5c5e\u4e8e\u5feb\u9012\u7ad9&#xff0c;\u800cDatagramPacket \u662f\u5c5e\u4e8e\u5305\u88f9\u3002\u5305\u88f9\u8981\u901a\u8fc7\u5feb\u9012\u7ad9\u7684\u5206\u62e3\u4f20\u9012\u51fa\u53bb\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u6784\u9020\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>DatagramPacket(byte[] buf, int length)<\/td>\n<td>\u6784\u9020\u4e00\u4e2aDatagramPacket\u4ee5\u7528\u6765\u63a5\u6536\u6570\u636e\u62a5&#xff0c;\u63a5\u6536\u7684\u6570\u636e\u4fdd\u5b58\u5728\u5b57\u8282\u6570\u7ec4&#xff08;\u7b2c\u4e00\u4e2a\u53c2\u6570buf&#xff09;\u4e2d&#xff0c;\u63a5\u6536\u6307\u5b9a\u957f\u5ea6 (\u7b2c\u4e8c\u4e2a\u53c2\u6570length)<\/td>\n<\/tr>\n<tr>\n<td>DatagramPacket(byte[] buf, int offset, int length,SocketAddress address)\u00a0<\/td>\n<td>\u6784\u9020\u4e00\u4e2aDatagramPacket\u4ee5\u7528\u6765\u53d1\u9001\u6570\u636e\u62a5&#xff0c;\u53d1\u9001\u7684\u6570\u636e\u4e3a\u5b57\u8282\u6570\u7ec4&#xff08;\u7b2c\u4e00\u4e2a\u53c2\u6570buf&#xff09;\u4e2d&#xff0c;\u4eceoffset\u5230\u6307\u5b9a\u957f \u5ea6&#xff08;\u7b2c\u4e8c\u4e2a\u53c2\u6570length&#xff09;\u3002address\u6307\u5b9a\u76ee\u7684\u4e3b\u673a\u7684IP \u548c\u7aef\u53e3\u53f7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u5177\u4f53\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>InetAddress getAddress()<\/td>\n<td>\u4ece\u63a5\u6536\u7684\u6570\u636e\u62a5\u4e2d&#xff0c;\u83b7\u53d6\u53d1\u9001\u7aef\u4e3b\u673aIP\u5730\u5740&#xff1b;\u6216\u4ece\u53d1\u9001\u7684\u6570\u636e\u62a5\u4e2d&#xff0c;\u83b7\u53d6\u63a5\u6536\u7aef\u4e3b\u673aIP\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>int getPort()<\/td>\n<td>\u4ece\u63a5\u6536\u7684\u6570\u636e\u62a5\u4e2d&#xff0c;\u83b7\u53d6\u53d1\u9001\u7aef\u4e3b\u673a\u7684\u7aef\u53e3\u53f7&#xff1b;\u6216\u4ece \u53d1\u9001\u7684\u6570\u636e\u62a5\u4e2d&#xff0c;\u83b7\u53d6\u63a5\u6536\u7aef\u4e3b\u673a\u7aef\u53e3\u53f7<\/td>\n<\/tr>\n<tr>\n<td>byte[] getData()<\/td>\n<td>\u83b7\u53d6\u6570\u636e\u62a5\u4e2d\u7684\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0\u7531\u4e8eUDP\u662f\u65e0\u8fde\u63a5\u7684&#xff0c;\u56e0\u6b64\u6784\u9020UDP\u53d1\u9001\u7684\u6570\u636e\u62a5\u65f6&#xff0c;\u9700\u8981\u4f20\u5165 SocketAddress\u00a0&#xff0c;\u8be5\u5bf9\u8c61\u53ef\u4ee5\u4f7f\u7528 InetSocketAddresS\u00a0\u6765\u521b\u5efa\u3002\u5373 InetSocketAddress \u662f SocketAddress \u7684\u5b50\u7c7b\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u6784\u9020\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>InetSocketAddress(InetAddress addr, int port)<\/td>\n<td>\u521b\u5efa\u4e00\u4e2aSocket\u5730\u5740&#xff0c;\u5305\u542bIP\u5730\u5740\u548c\u7aef\u53e3\u53f7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5148\u6765\u7406\u89e3\u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u8fd9\u4e2a\u4e24\u4e2a\u540d\u8bcd\u7684\u542b\u4e49&#xff1a;\u00a0<\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50&#xff1a;\u6211\u4eec\u53bb\u5b66\u6821\u98df\u5802\u5403\u996d\u65f6&#xff0c;\u53ef\u80fd\u67d0\u4e2a\u7a97\u53e3\u7684\u996d\u83dc\u6bd4\u8f83\u597d\u5403&#xff0c;\u90a3\u4e48\u6211\u4eec\u4e0b\u4e00\u6b21\u6216\u8005\u4ee5\u540e\u90fd\u6709\u53ef\u80fd\u4f1a\u53bb\u8fd9\u4e2a\u7a97\u53e3\u5403\u996d&#xff0c;\u800c\u8fd9\u4e2a\u7a97\u53e3\u80af\u5b9a\u662f\u4e00\u76f4\u5728\u8fd9\u4e2a\u98df\u5802\u7684\u67d0\u4e2a\u56fa\u5b9a\u5730\u70b9\u7684&#xff0c;\u800c\u8fd9\u4e2a\u7a97\u53e3\u6240\u670d\u52a1\u7684\u5b66\u751f\u4e0d\u662f\u56fa\u5b9a\u7684&#xff0c;\u6bcf\u4e2a\u5b66\u751f\u53bb\u5403\u996d\u65f6&#xff0c;\u80af\u5b9a\u4e5f\u662f\u968f\u673a\u9009\u62e9\u7684\u5ea7\u4f4d\u5750\u4e0b\u6765\u5403\u996d\u3002<\/p>\n<p>\u9488\u5bf9\u4e0a\u9762\u7684\u60c5\u51b5&#xff0c;\u98df\u5802\u7684\u7a97\u53e3\u5c31\u662f\u670d\u52a1\u5668&#xff0c;\u5403\u996d\u7684\u5b66\u751f\u5c31\u662f\u5ba2\u6237\u7aef&#xff0c;\u5ba2\u6237\u7aef\u4f1a\u7ed9\u670d\u52a1\u5668\u63d0\u4f9b\u8bf7\u6c42&#xff08;\u6211\u4eec\u4f1a\u628a\u5403\u7684\u83dc\u544a\u8bc9\u98df\u5802\u963f\u59e8&#xff09;&#xff0c;\u670d\u52a1\u5668\u4f1a\u7ed9\u5ba2\u6237\u7aef\u63d0\u4f9b\u54cd\u5e94&#xff08;\u98df\u5802\u963f\u59e8\u5c31\u4f1a\u7ed9\u6211\u4eec\u6253\u5bf9\u5e94\u7684\u83dc&#xff09;\u3002\u56e0\u4e3a\u670d\u52a1\u5668&#xff08;\u98df\u5802\u7a97\u53e3&#xff09;\u662f\u9700\u8981\u7ed9\u591a\u4e2a\u5ba2\u6237\u7aef\u63d0\u4f9b\u54cd\u5e94&#xff0c;\u5982\u679c\u8fd9\u4e2a\u670d\u52a1\u5668\u7684\u7aef\u53e3\u8001\u662f\u53d1\u751f\u53d8\u5316&#xff08;\u7a97\u53e3\u8001\u662f\u53d1\u751f\u53d8\u5316&#xff09;&#xff0c;\u90a3\u80af\u5b9a\u662f\u4e0d\u65b9\u4fbf\u5ba2\u6237\u7aef\u53bb\u8bbf\u95ee\u7684&#xff0c;\u56e0\u6b64\u670d\u52a1\u5668\u7684IP\u4e0e\u7aef\u53e3\u90fd\u662f\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u56fa\u5b9a\u7684&#xff0c;\u800c\u5ba2\u6237\u7aef\u7684\u7aef\u53e3&#xff08;\u5b66\u751f\u5728\u5403\u996d\u627e\u7684\u5ea7\u4f4d&#xff09;\u80af\u5b9a\u662f\u968f\u673a\u7684&#xff0c;\u5982\u679c\u67d0\u4e2a\u5b66\u751f\u6ca1\u5728\u8fd9\u91cc&#xff0c;\u4f46\u662f\u4ed6\u5360\u4e86\u4e00\u4e2a\u4f4d\u7f6e&#xff0c;\u90a3\u4e48\u80af\u5b9a\u662f\u4e0d\u5408\u7406\u7684&#xff0c;\u540c\u6837\u67d0\u4e2a\u5ba2\u6237\u7aef\u6ca1\u6709\u542f\u52a8\u8fdb\u7a0b\u8bbf\u95ee\u670d\u52a1\u5668\u65f6&#xff0c;\u4e00\u76f4\u628a\u7aef\u53e3\u53f7\u7ed9\u8e39\u5728\u6000\u91cc\u80af\u5b9a\u4e5f\u662f\u4f1a\u5bf9\u522b\u7684\u8fdb\u7a0b\u9020\u6210\u5f71\u54cd\u7684&#xff08;\u7aef\u53e3\u53f7\u662f\u6709\u9650\u7684&#xff09;\u3002<\/p>\n<p>\u6709\u4e86\u4ee5\u4e0a\u4fe1\u606f&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u6765\u5199\u4e00\u4e2a\u6700\u7b80\u5355\u670d\u52a1\u5668&#xff1a;\u56de\u663e\u670d\u52a1\u5668&#xff08;\u63a5\u6536\u5230\u7684\u8bf7\u6c42\u5c31\u662f\u54cd\u5e94&#xff0c;\u5373\u63a5\u6536\u7684\u8bf7\u6c42\u662f\u4ec0\u4e48&#xff0c;\u670d\u52a1\u5668\u8fd4\u56de\u7684\u54cd\u5e94\u4e5f\u5c31\u662f\u4ec0\u4e48&#xff0c;\u7c7b\u4f3c\u4e8e\u9e66\u9e49\u5b66\u820c&#xff09;\u3002<\/p>\n<p>\u670d\u52a1\u5668\u7684\u5904\u7406\u903b\u8f91&#xff1a;1\u3001\u63a5\u6536\u8bf7\u6c42\u5e76\u89e3\u6790&#xff1b;2\u3001\u6839\u636e\u8bf7\u6c42\u8ba1\u7b97\u54cd\u5e94&#xff1b;3\u3001\u5c06\u76f8\u5e94\u53d1\u9001\u7ed9\u54cd\u5e94\u7684\u5ba2\u6237\u7aef&#xff1b;4\u3001\u6253\u5370\u65e5\u5fd7\u3002<\/p>\n<p>public class UdpEchoServer {<br \/>\n    \/\/ \u521b\u5efa\u7f51\u5361\u8d44\u6e90<br \/>\n    DatagramSocket socket &#061; null;<br \/>\n    public UdpEchoServer(int port) throws SocketException {<br \/>\n        \/\/ \u6307\u5b9a\u672c\u673a\u7684\u4e00\u4e2a\u56fa\u5b9a\u7aef\u53e3\u53f7\u4e3a\u670d\u52a1\u5668\u7684\u7aef\u53e3\u53f7<br \/>\n        socket &#061; new DatagramSocket(port);<br \/>\n    }<br \/>\n    \/\/ \u542f\u52a8\u670d\u52a1\u5668\u65b9\u6cd5<br \/>\n    public void start() throws IOException {<br \/>\n        \/\/ \u7531\u4e8e\u670d\u52a1\u5668\u662f7*24\u5c0f\u65f6\u7684\u5de5\u4f5c\u5236&#xff0c;\u56e0\u6b64\u5f97\u6b7b\u5faa\u73af<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8\u6210\u529f~&#034;);<br \/>\n        while (true) {<br \/>\n            \/\/ 1\u3001\u7f51\u5361\u63a5\u6536\u8bf7\u6c42\u5e76\u89e3\u6790<br \/>\n            \/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u636e\u62a5\u6765\u63a5\u6536\u8bf7\u6c42\u7684\u5177\u4f53\u5185\u5bb9<br \/>\n            \/\/ \u6570\u636e\u62a5\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u7528\u6765\u5b58\u50a8\u6570\u636e\u7684\u5305\u88f9&#xff1a;\u5b57\u8282\u6570\u7ec4&#043;\u957f\u5ea6\u7ec4\u6210<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(requestPacket); \/\/ \u5c06\u5f97\u5230\u7684\u6570\u636e\u5b58\u50a8\u5728\u6570\u636e\u62a5\u7684\u5b57\u8282\u6570\u7ec4\u4e2d<br \/>\n            \/\/ \u5c06\u6570\u636e\u62a5\u4e2d\u7684\u5185\u5bb9\u8f6c\u6210\u5b57\u7b26\u4e32\u4e3a\u540e\u7eed\u5904\u7406\u505a\u51c6\u5907<br \/>\n            String request &#061; new String(requestPacket.getData(), 0, requestPacket.getLength()); \/\/ \u6570\u636e\u7684\u6709\u6548\u957f\u5ea6<br \/>\n            \/\/ 2\u3001\u6839\u636e\u8bf7\u6c42\u8ba1\u7b97\u54cd\u5e94<br \/>\n            String response &#061; process(request);<br \/>\n            \/\/ 3\u3001\u5c06\u54cd\u5e94\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef<br \/>\n            \/\/ \u4e5f\u662f\u901a\u8fc7\u6570\u636e\u62a5\u7684\u5f62\u5f0f<br \/>\n            \/\/ \u7531\u4e8eUDP\u662f\u65e0\u8fde\u63a5\u7684&#xff0c;\u56e0\u6b64\u6211\u4eec\u5f97\u624b\u52a8\u53bb\u8bbe\u7f6e\u53d1\u9001\u7684IP\u4e0e\u7aef\u53e3\u53f7<br \/>\n            DatagramPacket responsePacket &#061; new DatagramPacket(response.getBytes(), 0, response.getBytes().length,<br \/>\n                    requestPacket.getAddress(), requestPacket.getPort());<br \/>\n            socket.send(responsePacket);<br \/>\n            \/\/ 4\u3001\u6253\u5370\u65e5\u5fd7&#xff1a;\u5ba2\u6237\u7aefIP\u3001\u5ba2\u6237\u7aef\u7aef\u53e3\u53f7\u3001\u8bf7\u6c42\u3001\u54cd\u5e94<br \/>\n            System.out.printf(&#034;[%s %d]  request:%s  response:%s\\\\n&#034;, requestPacket.getAddress(),<br \/>\n                    requestPacket.getPort(), request, response);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    \/\/ \u540e\u7eed\u5982\u679c\u8981\u4fee\u6539\u670d\u52a1\u5668\u7684\u529f\u80fd&#xff0c;\u5c31\u53ea\u9700\u8981\u91cd\u8f7dprocess\u65b9\u6cd5\u5373\u53ef<br \/>\n    private String process(String request) {<br \/>\n        return request; \/\/ \u56de\u663e\u670d\u52a1\u5668\u7684\u529f\u80fd<br \/>\n    }<\/p>\n<p>    public static void main(String[] args) throws IOException {<br \/>\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u5668\u5b9e\u4f8b\u5e76\u542f\u52a8\u670d\u52a1\u5668<br \/>\n        UdpEchoServer server &#061; new UdpEchoServer(9090);<br \/>\n        server.start();<br \/>\n    }<br \/>\n}<\/p>\n<p>\u6709\u4e86\u670d\u52a1\u5668\u4e4b\u540e&#xff0c;\u5c31\u53ef\u4ee5\u6765\u521b\u5efa\u5ba2\u6237\u7aef\u7a0b\u5e8f\u4e86\u3002<\/p>\n<p>public class UdpEchoClient {<br \/>\n    DatagramSocket socket &#061; null;<br \/>\n    \/\/ UDP\u662f\u4e0d\u8fde\u63a5&#xff0c;\u56e0\u6b64\u5ba2\u6237\u7aef\u5f97\u4fdd\u5b58\u5bf9\u5e94\u670d\u52a1\u5668\u7684IP\u4e0e\u7aef\u53e3\u53f7<br \/>\n    private String serverIP &#061; null;<br \/>\n    private int serverPort &#061; 0;<\/p>\n<p>    \/\/ \u6307\u5b9a\u9700\u8981\u8bbf\u95ee\u7684\u670d\u52a1\u5668IP\u4e0e\u7aef\u53e3\u53f7<br \/>\n    public UdpEchoClient(String serverIP, int serverPort) {<br \/>\n        this.serverIP &#061; serverIP;<br \/>\n        this.serverPort &#061; serverPort;<br \/>\n    }<\/p>\n<p>    public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u5ba2\u6237\u7aef\u542f\u52a8\u6210\u529f(exit\u9000\u51fa)~&#034;);<br \/>\n        \/\/ \u521b\u5efa\u7f51\u5361\u8d44\u6e90<br \/>\n        socket &#061; new DatagramSocket();<br \/>\n        while (true) {<br \/>\n            \/\/ 1\u3001\u5f00\u59cb\u63a5\u6536\u7528\u6237\u7684\u8f93\u5165<br \/>\n            Scanner scanner &#061; new Scanner(System.in);<br \/>\n            String request &#061; scanner.nextLine();<br \/>\n            if (request.equals(&#034;exit&#034;)) {<br \/>\n                socket.close(); \/\/ \u91ca\u653e\u7f51\u5361\u8d44\u6e90<br \/>\n                System.out.println(&#034;\u5ba2\u6237\u7aef\u6210\u529f\u9000\u51fa~&#034;)<br \/>\n                break;<br \/>\n            }<br \/>\n            \/\/ 2\u3001\u5c06\u8f93\u5165\u6570\u636e\u6253\u5305\u6210\u6570\u636e\u62a5 &#xff08;\u6307\u5b9a\u670d\u52a1\u5668IP\u4e0e\u7aef\u53e3\u53f7&#xff09;<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(request.getBytes(), 0 ,request.getBytes().length<br \/>\n            , InetAddress.getByName(serverIP), serverPort);<br \/>\n            \/\/ 3\u3001\u7136\u540e\u518d\u7ed9\u5230\u670d\u52a1\u5668<br \/>\n            socket.send(requestPacket);<br \/>\n            \/\/ 4\u3001\u63a5\u6536\u670d\u52a1\u5668\u7684\u54cd\u5e94<br \/>\n            DatagramPacket responsePacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(responsePacket);<br \/>\n            \/\/ 5\u3001\u5904\u7406\u54cd\u5e94&#xff1a;\u6253\u5370\u54cd\u5e94\u7684\u7ed3\u679c<br \/>\n            String response &#061; new String(responsePacket.getData(), 0, responsePacket.getLength()); \/\/ \u6709\u6548\u7684\u957f\u5ea6<br \/>\n            System.out.println(response);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    public static void main(String[] args) throws IOException {<br \/>\n        \/\/ \u6307\u5b9a\u5bf9\u5e94\u670d\u52a1\u5668\u7684IP\u4e0e\u7aef\u53e3\u53f7<br \/>\n        UdpEchoClient client &#061; new UdpEchoClient(&#034;127.0.0.1&#034;, 9090);<br \/>\n        client.start();<br \/>\n    }<br \/>\n}<\/p>\n<p>\u6ce8\u610f&#xff1a;127.0.0.1 \u8fd9\u5c31\u662f\u4ee3\u6307\u5f53\u524d\u673a\u5668\u7684IP\u3002\u00a0<\/p>\n<p>\u8fd0\u884c\u7ed3\u679c&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"751\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418174735-68029037e3cef.png\" width=\"1200\" \/><\/p>\n<p>\u670d\u52a1\u5668&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"724\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418174736-680290388ede7.png\" width=\"1200\" \/><\/p>\n<p>\u7531\u4e0a\u56fe\u53ef\u77e5&#xff0c;\u5ba2\u6237\u7aef\u7684\u8fd0\u884c\u4e0e\u5426\u548c\u670d\u52a1\u5668\u6ca1\u4ec0\u4e48\u5173\u7cfb&#xff0c;\u670d\u52a1\u5668\u5728\u6b63\u5e38\u8fd0\u884c\u7684\u60c5\u51b5\u4e0b\u4f1a\u4e00\u76f4\u8bb0\u5f55\u5ba2\u6237\u7aef\u7684\u8bbf\u95ee\u4fe1\u606f\u3002\u00a0<\/p>\n<p>\u4e0b\u9762\u5c31\u6765\u4f7f\u7528\u53e6\u5916\u4e00\u79cd\u534f\u8bae\u6765\u5b9e\u73b0\u56de\u663e\u670d\u52a1\u5668&#xff1a;<\/p>\n<h3 id=\"TCP\"><span style=\"color:#38d8f0\">TCP<\/span><\/h3>\n<p>ServerSocket \u662f\u521b\u5efaTCP\u7684\u670d\u52a1\u5668Socket\u7684APl\u3002<\/p>\n<p>ServerSocket &#xff1a;<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u6784\u9020\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>ServerSocket(int port)<\/td>\n<td>\u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u5668\u6d41\u5957\u63a5\u5b57Socket&#xff0c;\u5e76\u7ed1\u5b9a\u5230\u6307\u5b9a\u7aef\u53e3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u5177\u4f53\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>Socket accept()<\/td>\n<td>\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3&#xff08;\u521b\u5efa\u65f6\u7ed1\u5b9a\u7684\u7aef\u53e3&#xff09;&#xff0c;\u6709\u5ba2\u6237\u7aef \u8fde\u63a5\u540e&#xff0c;\u8fd4\u56de\u4e00\u4e2a\u670d\u52a1\u7aefSocket\u5bf9\u8c61&#xff0c;\u5e76\u57fa\u4e8e\u8be5 Socket\u5efa\u7acb\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5&#xff0c;\u5426\u5219\u963b\u585e\u7b49\u5f85<\/td>\n<\/tr>\n<tr>\n<td>void close()<\/td>\n<td>\u5173\u95ed\u6b64\u5957\u63a5\u5b57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Socket&#xff1a;<\/p>\n<p>Socket\u662f\u5ba2\u6237\u7aefSocket&#xff0c;\u6216\u670d\u52a1\u5668\u4e2d\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5&#xff08;accept\u65b9\u6cd5&#xff09;\u7684\u8bf7\u6c42\u540e&#xff0c;\u8fd4\u56de\u7684\u670d\u52a1\u5668Socket\u3002\u4e0d\u7ba1\u662f\u5ba2\u6237\u7aef\u8fd8\u662f\u670d\u52a1\u5668Socket&#xff0c;\u90fd\u662f\u53cc\u65b9\u5efa\u7acb\u8fde\u63a5\u4ee5\u540e&#xff0c;\u4fdd\u5b58\u7684\u5bf9\u7aef\u4fe1\u606f&#xff0c;\u53ca\u7528\u6765\u4e0e\u5bf9\u65b9\u6536\u53d1\u6570\u636e\u7684\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u6784\u9020\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>Socket(String host, int port)<\/td>\n<td>\u521b\u5efa\u4e00\u4e2a\u5ba2\u6237\u7aef\u6d41\u5957\u63a5\u5b57Socket&#xff0c;\u5e76\u4e0e\u5bf9\u5e94IP\u7684\u4e3b\u673a\u4e0a&#xff0c;\u5bf9\u5e94\u7aef\u53e3\u7684\u8fdb\u7a0b\u5efa\u7acb\u8fde\u63a5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0\u8fd9\u91cc\u7684\u6784\u9020\u65b9\u6cd5\u6709\u5f88\u591a&#xff0c;\u4f46\u662f\u5e38\u7528\u7684\u5c31\u662f\u901a\u8fc7 String\u7c7b\u578b\u7684host \u6765\u5efa\u7acb\u8fde\u63a5\u7684\u3002<\/p>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:500px\">\n<tbody>\n<tr>\n<td>\u5177\u4f53\u65b9\u6cd5<\/td>\n<td>\u8bf4\u660e<\/td>\n<\/tr>\n<tr>\n<td>InetAddress getlnetAddress()<\/td>\n<td>\u8fd4\u56de\u5957\u63a5\u5b57\u6240\u8fde\u63a5\u7684\u5730\u5740&#xff08;\u5bf9\u7aef&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>int getPort()<\/td>\n<td>\u8fd4\u56de\u5957\u63a5\u5b57\u6240\u8fde\u63a5\u7684\u7aef\u53e3\u53f7&#xff08;\u5bf9\u7aef&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>InputStream getlnputStream()<\/td>\n<td>\u8fd4\u56de\u6b64\u5957\u63a5\u5b57\u7684\u8f93\u5165\u6d41<\/td>\n<\/tr>\n<tr>\n<td>OutputStream getOutputStream()<\/td>\n<td>\u8fd4\u56de\u6b64\u5957\u63a5\u5b57\u7684\u8f93\u51fa\u6d41<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5bf9\u7aef&#xff1a;\u8fd9\u4e2a\u6982\u5ff5\u662f\u76f8\u5bf9\u7684&#xff0c;\u7ad9\u5728\u670d\u52a1\u5668\u7684\u89d2\u5ea6&#xff0c;\u5bf9\u7aef\u662f\u6307\u5ba2\u6237\u7aef&#xff1b;\u7ad9\u5728\u5ba2\u6237\u7aef\u7684\u89d2\u5ea6&#xff0c;\u5bf9\u7aef\u6307\u7684\u662f\u670d\u52a1\u5668\u3002\u5f53\u7136&#xff0c;\u4e5f\u662f\u53ef\u4ee5\u83b7\u53d6\u672c\u5730\u7a0b\u5e8f\u7684\u5730\u5740\u548c\u7aef\u53e3\u53f7\u7684&#xff0c;\u00a0\u4f7f\u7528\u7684\u662f getLocalPort &#xff0c;\u7ad9\u5728\u670d\u52a1\u5668\u7684\u89d2\u5ea6&#xff0c;\u83b7\u53d6\u7684\u5c31\u662f\u670d\u52a1\u5668\u81ea\u5df1\u6240\u5728\u7aef\u53e3\u3002<\/p>\n<p>\u8fd9\u91cc\u7684ServerSocket \u53ef\u4ee5\u7406\u89e3\u4e3a\u7f51\u5361\u8d44\u6e90&#xff0c;\u800cSocket \u5c31\u662f\u4fdd\u5b58TCP\u8fde\u63a5\u53cc\u65b9\u7684\u8fde\u63a5\u3002\u670d\u52a1\u5668\u7684\u8fde\u63a5\u6709\u5f88\u591a\u4e2a&#xff0c;\u56e0\u6b64\u6211\u4eec\u9700\u8981\u4e3a\u5176\u7533\u8bf7\u7f51\u5361\u8d44\u6e90\u6765\u968f\u65f6\u83b7\u53d6\u65b0\u7684\u8fde\u63a5\u3002\u800c\u5ba2\u6237\u7aef\u53ea\u9700\u8981\u548c\u670d\u52a1\u5668\u8fde\u63a5\u5373\u53ef&#xff0c;\u56e0\u6b64\u53ea\u9700\u8981\u53bb\u5c1d\u8bd5\u7533\u8bf7\u5bf9\u5e94\u7684IP\u5730\u5740\u4e0e\u7aef\u53e3\u53f7\u8fdb\u884c\u8fde\u63a5\u5373\u53ef\u3002<\/p>\n<p>\u603b\u4f53\u7684\u5b9e\u73b0\u601d\u8def\u8fd8\u662f\u548c\u4e0a\u9762\u7684UDP\u5dee\u4e0d\u591a&#xff0c;\u4f46\u662f\u5177\u4f53\u7684\u5b9e\u73b0\u65b9\u5f0f\u6709\u4e0d\u540c\u3002<\/p>\n<p>\u670d\u52a1\u5668&#xff1a;<\/p>\n<p>public class TcpEchoServer {<br \/>\n    private ServerSocket serverSocket;<\/p>\n<p>    public TcpEchoServer(int port) throws IOException {<br \/>\n        serverSocket &#061; new ServerSocket(port);<br \/>\n    }<\/p>\n<p>    public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8\u6210\u529f~&#034;);<br \/>\n        while (true) {<br \/>\n            System.out.println(&#034;\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5&#8230;&#034;);<br \/>\n            Socket socket &#061; serverSocket.accept();<br \/>\n            System.out.println(&#034;\u5ba2\u6237\u7aef\u8fde\u63a5\u6210\u529f&#xff1a;&#034; &#043; socket.getInetAddress() &#043; &#034;:&#034; &#043; socket.getPort());<\/p>\n<p>            \/\/ \u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;\u8fdb\u5165\u901a\u4fe1\u8fc7\u7a0b<br \/>\n            handleClient(socket);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    private void handleClient(Socket socket) throws IOException {<br \/>\n        try (InputStream inputStream &#061; socket.getInputStream();<br \/>\n             OutputStream outputStream &#061; socket.getOutputStream()) {<\/p>\n<p>            while (true) {<br \/>\n                byte[] buffer &#061; new byte[4096];<br \/>\n                int len &#061; 0;<\/p>\n<p>                StringBuilder sb &#061; new StringBuilder();<br \/>\n                \/\/ \u5faa\u73af\u8bfb\u53d6\u5ba2\u6237\u7aef\u8bf7\u6c42\u5e76\u54cd\u5e94<br \/>\n                while ((len &#061; inputStream.read(buffer)) !&#061; -1) {<br \/>\n                    sb.append(new String(buffer, 0, len));<br \/>\n                    if (sb.toString().contains(&#034;\\\\n&#034;)) {<br \/>\n                        \/\/ \u68c0\u6d4b\u5230\u6362\u884c\u7b26&#xff0c;\u8ba4\u4e3a\u8bf7\u6c42\u7ed3\u675f<br \/>\n                        break;<br \/>\n                    }<br \/>\n                }<br \/>\n                String request &#061; sb.toString();<\/p>\n<p>                \/\/ \u6839\u636e\u8bf7\u6c42\u8ba1\u7b97\u54cd\u5e94<br \/>\n                String response &#061; process(request);<\/p>\n<p>                \/\/ \u5148\u5224\u65ad\u8fde\u63a5\u662f\u5426\u7ec8\u6b62\u4e86<br \/>\n                if (socket.isClosed()) {<br \/>\n                    return;<br \/>\n                }<br \/>\n                \/\/ \u5c06\u54cd\u5e94\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef<br \/>\n                outputStream.write(response.getBytes());<br \/>\n                outputStream.flush(); \/\/ \u5237\u65b0\u7f13\u51b2\u533a<br \/>\n            }<br \/>\n        } finally {<br \/>\n            socket.close();<br \/>\n            System.out.println(&#034;\u5ba2\u6237\u7aef\u5df2\u65ad\u5f00\u8fde\u63a5&#034;);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    private String process(String request) {<br \/>\n        return request&#043;&#034;\\\\n&#034;;<br \/>\n    }<\/p>\n<p>    public static void main(String[] args) throws IOException {<br \/>\n        TcpEchoServer server &#061; new TcpEchoServer(9090);<br \/>\n        server.start();<br \/>\n    }<br \/>\n}<\/p>\n<p>\u5ba2\u6237\u7aef&#xff1a;<\/p>\n<p>public class TcpEchoClient {<br \/>\n    private String serverIp;<br \/>\n    private int serverPort;<\/p>\n<p>    public TcpEchoClient(String serverIp, int serverPort) {<br \/>\n        this.serverIp &#061; serverIp;<br \/>\n        this.serverPort &#061; serverPort;<br \/>\n    }<\/p>\n<p>    public void start() throws IOException {<br \/>\n        try (Socket socket &#061; new Socket(serverIp, serverPort);<br \/>\n             OutputStream outputStream &#061; socket.getOutputStream();<br \/>\n             InputStream inputStream &#061; socket.getInputStream();<br \/>\n             Scanner scanner &#061; new Scanner(System.in)) {<\/p>\n<p>            System.out.println(&#034;\u5ba2\u6237\u7aef\u8fde\u63a5\u670d\u52a1\u5668\u6210\u529f~&#034;);<\/p>\n<p>            \/\/ \u5faa\u73af\u53d1\u9001\u8bf7\u6c42\u5e76\u63a5\u6536\u54cd\u5e94<br \/>\n            while (true) {<br \/>\n                System.out.print(&#034;\u8f93\u5165\u8bf7\u6c42\u6570\u636e(exit\u9000\u51fa): &#034;);<br \/>\n                \/\/ \u52a0\u4e0a\u6362\u884c\u7b26&#xff0c;\u8ba9\u670d\u52a1\u5668\u5728\u8bfb\u53d6\u6570\u636e\u65f6&#xff0c;\u77e5\u9053\u8fd9\u4e2a\u662f\u7ed3\u675f\u7684\u6807\u5fd7<br \/>\n                String request &#061; scanner.nextLine()&#043;&#034;\\\\n&#034;;<\/p>\n<p>                if (request.equals(&#034;exit\\\\n&#034;)) { \/\/ \u56e0\u4e3a\u624b\u52a8\u52a0\u4e0a\u4e86\u6362\u884c\u7b26&#xff0c;\u56e0\u6b64\u5224\u65ad\u4e5f\u8981\u52a0\u4e0a<br \/>\n                    System.out.println(&#034;\u5ba2\u6237\u7aef\u8bf7\u6c42\u65ad\u5f00\u8fde\u63a5&#034;);<br \/>\n                    break;<br \/>\n                }<\/p>\n<p>                \/\/ \u53d1\u9001\u8bf7\u6c42\u6570\u636e<br \/>\n                outputStream.write(request.getBytes());<br \/>\n                outputStream.flush(); \/\/ \u5237\u65b0\u7f13\u51b2\u533a&#xff0c;\u66f4\u597d\u5730\u8ba9\u6570\u636e\u53d1\u9001<\/p>\n<p>                \/\/ \u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94<br \/>\n                byte[] 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