{"id":63470,"date":"2026-01-22T00:48:50","date_gmt":"2026-01-21T16:48:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/63470.html"},"modified":"2026-01-22T00:48:50","modified_gmt":"2026-01-21T16:48:50","slug":"java%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%8c%e4%bb%8e%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e4%b8%89%e8%a6%81%e7%b4%a0%e5%88%b0tcp-udp%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/63470.html","title":{"rendered":"Java\u7f51\u7edc\u7f16\u7a0b\u5b66\u4e60\u7b14\u8bb0\uff0c\u4ece\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20\u5230TCP\/UDP\u534f\u8bae"},"content":{"rendered":"

\u4ec0\u4e48\u662f\u7f51\u7edc\u7f16\u7a0b<\/h2>\n

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\u5e38\u89c1\u7684\u7f51\u7edc\u7a0b\u5e8f\u8f6f\u4ef6\u67b6\u6784\u6709：BS（Broser\u6d4f\u89c8\u5668\/Server\u670d\u52a1\u5668）\u67b6\u6784\u3001CS（Client\u5ba2\u6237\u7aef\/Server\u670d\u52a1\u5668）\u67b6\u6784<\/p>\n

  • BS\u67b6\u6784：\u4f18\u52bf\u662f\u7528\u6237\u4e0d\u7528\u4e0b\u8f7d\u5ba2\u6237\u7aef，\u4f7f\u7528\u6d4f\u89c8\u5668\u5373\u53ef\u5feb\u901f\u83b7\u53d6\u670d\u52a1，\u8fd0\u8425\u8005\u53ef\u968f\u65f6\u66f4\u65b0\u7a0b\u5e8f\u3002\u52a3\u52bf\u662f\u6240\u6709\u7a0b\u5e8f\u548c\u8d44\u6e90\u9700\u8981\u901a\u8fc7\u7f51\u7edc\u4f20\u8f93，\u4ea7\u54c1\u7cbe\u7f8e\u548c\u7ec6\u817b\u7a0b\u5ea6\u4e0d\u53caCS\u67b6\u6784\u7684\u4ea7\u54c1\u3002<\/li>\n
  • CS\u67b6\u6784：\u4f18\u7565\u52bf\u4e0eBS\u67b6\u6784\u76f8\u53cd\u3002\u4f18\u52bf\u662f\u7528\u6237\u63d0\u524d\u4e0b\u8f7d\u597d\u7a0b\u5e8f\u7684\u6240\u6709\u8d44\u6e90，\u4ea7\u54c1\u7684\u7cbe\u7f8e\u548c\u7ec6\u817b\u7a0b\u5e8f\u53ef\u4ee5\u505a\u5230\u975e\u5e38\u9ad8，\u800c\u4e14\u53ef\u4ee5\u66f4\u597d\u7684\u5229\u7528\u672c\u5730\u8ba1\u7b97\u673a\u7b97\u529b，\u6bd4\u59823A\u6e38\u620f\u90fd\u662fCS\u67b6\u6784\u3002\u52a3\u52bf\u662f\u9700\u8981\u7528\u6237\u4e0b\u8f7d\u5ba2\u6237\u7aef\u7a0b\u5e8f，\u7a0b\u5e8f\u66f4\u65b0\u65f6\u6bd4\u8f83\u9ebb\u70e6，\u9700\u8981\u5ba2\u6237\u7aef\u66f4\u65b0\u8f6f\u4ef6\u3002<\/li>\n

    \u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20<\/h2>\n

    \u8981\u5b9e\u73b0\u7f51\u7edc\u7f16\u7a0b，\u5fc5\u987b\u5b9e\u73b0\u7f51\u7edc\u901a\u4fe1\u9700\u8981\u786e\u5b9a\u901a\u4fe1\u5bf9\u8c61（IP）\u3001\u5bf9\u8c61\u4e2d\u7684\u5177\u4f53\u7a0b\u5e8f（\u7aef\u53e3）\u3001\u901a\u4fe1\u89c4\u5219（\u534f\u8bae）\u3002<\/p>\n

    \u7b2c\u4e00\u6b65，\u9996\u5148\u8981\u5728\u7f51\u7edc\u4e2d，\u627e\u5230\u5bf9\u65b9\u7684\u8ba1\u7b97\u673a\u8bbe\u5907\u3002\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d，IP\u662f\u7f51\u7edc\u8bbe\u5907\u7684\u552f\u4e00\u5730\u5740\u3002 \u7b2c\u4e8c\u6b65，\u5728\u5bf9\u65b9\u7684\u8ba1\u7b97\u673a\u8bbe\u5907\u4e2d，\u627e\u5230\u8981\u901a\u4fe1\u7684\u8f6f\u4ef6，\u56e0\u4e3a\u8ba1\u7b97\u673a\u4e2d\u53ef\u80fd\u8fd0\u884c\u5f88\u591a\u7a0b\u5e8f\u3002\u6bd4\u5982\u5fae\u4fe1\u670d\u52a1\u7aef\u8981\u53d1\u9001\u6570\u636e\u5230\u7528\u6237\u624b\u673a，\u9700\u8981\u627e\u5230\u7528\u6237\u624b\u673a\u4e2d\u7684\u5fae\u4fe1\u5ba2\u6237\u7aef，\u800c\u7528\u6237\u624b\u673a\u4e2d\u53ef\u80fd\u6709\u5fae\u4fe1\u3001QQ\u3001\u6dd8\u5b9d\u7b49\u5f88\u591a\u5e94\u7528\u7a0b\u5e8f\u3002\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d，\u7aef\u53e3\u53f7\u662f\u533a\u5206\u7a0b\u5e8f\u8fdb\u7a0b\u7684\u7f16\u53f7\u3002 \u7b2c\u4e09\u6b65，\u9700\u8981\u786e\u5b9a\u901a\u4fe1\u65b9\u5f0f，\u5373\u7f51\u7edc\u534f\u8bae\u3002\u8ba1\u7b97\u673a\u7f51\u7edc\u534f\u8bae\u6709TCP\u3001UDP\u3001HTTP\u7b49\u534f\u8bae\u3002<\/p>\n

    \u6240\u4ee5，\u7f51\u7edc\u7f16\u7a0b\u7684\u4e09\u8981\u7d20\u5c31\u662f：IP\u3001\u7aef\u53e3\u53f7\u3001\u7f51\u7edc\u534f\u8bae<\/p>\n

    IP<\/h3>\n

    IP\u662f\u7f51\u7edc\u901a\u4fe1\u4e2d，\u8bbe\u5907\u7684\u5730\u5740，\u5177\u6709\u552f\u4e00\u6027\u3002<\/p>\n

    IP\u6709IPV4\u548cIPV6\u4e24\u79cd\u3002<\/p>\n

    IPV4<\/h4>\n

    IPV4\u662f\u6307IP\u4e92\u8054\u7f51\u901a\u4fe1\u534f\u8bae\u7b2c\u56db\u7248，IPV4\u75284\u4e2a\u5b57\u8282\u517132\u4f4d，\u75284\u7ec4（\u6bcf\u7ec41\u4e2a\u5b57\u8282）\u6765\u8868\u793a，\u6bd4\u5982：11000000 10101000 00000001 00000001\u3002IPV4\u91c7\u7528\u70b9\u5206\u5341\u8fdb\u5236，\u5373\u4f7f\u7528\u7b26\u53f7\u70b9.\u6765\u5206\u7ec4，\u91c7\u7528\u5341\u8fdb\u5236\u8868\u793a\u3002\u56e0\u6b64，\u4e0a\u8ff0IPV4\u5730\u5740\u8868\u793a\u4e3a：192.168.1.1<\/p>\n

    IPV4\u517132\u4f4d，\u56e0\u6b64\u53ef\u4ee5\u533a\u5206\u7684\u5730\u5740\u67092\u768432\u6b21\u65b9\u5171\u8ba14,294,967,296，\u800c\u5168\u7403\u6709\u6570\u5341\u4ebf\u4eba，\u6bcf\u4e2a\u4eba\u53c8\u6709\u6570\u53f0\u53ef\u4e0a\u7f51\u7684\u8bbe\u5907\u3002\u56e0\u6b64，IPV4\u7684\u5730\u5740\u662f\u4e0d\u591f\u7528\u7684，\u5b9e\u9645\u4e0a，IPV4\u65e9\u57282019\u5e74\u5c31\u5df2\u7ecf\u7528\u5b8c\u4e86\u3002<\/p>\n

    IPV4\u5df2\u7ecf\u7528\u5b8c\u4e86，\u800cIPV6\u5e76\u6ca1\u6709\u5927\u89c4\u6a21\u666e\u53ca，\u90a3IPV4\u662f\u5982\u4f55\u89e3\u51b3\u5f53\u524d\u8bbe\u5907IP\u5730\u5740\u4e0d\u591f\u7684\u95ee\u9898？\u7b54\u6848\u662f\u4f7f\u7528\u5c40\u57df\u7f51\u3002IPV4\u89c4\u5b9a192.168.0.0~192.168.255.255\u8fd9\u4e9b\u4e3a\u5c40\u57df\u7f51IP（\u8fd8\u6709\u5176\u4ed6\u79c1\u6709IP\u6bb5，\u4e0d\u5c55\u5f00），\u4e00\u4e2a\u533a\u57df\u5185（\u6bd4\u5982\u4e00\u4e2a\u7f51\u5427）\u7684\u6240\u6709\u8bbe\u5907，\u4f7f\u7528\u4e00\u4e2a\u516c\u7f51IP，\u800c\u6240\u6709\u533a\u57df\u5185\u7684\u7f51\u7edc\u8bbe\u5907，\u4f7f\u7528\u5c40\u57df\u7f51IP\u3002\u5c40\u57df\u7f51\u5185\u7684\u6240\u6709\u8bbe\u5907\u4e0a\u7f51，\u90fd\u4f7f\u7528\u516c\u7f51IP\u5bf9\u5916\u4f20\u8f93\u548c\u63a5\u6536\u6570\u636e，\u7136\u540e\u901a\u8fc7NAT（\u7f51\u7edc\u5730\u5740\u8f6c\u6362）\u6280\u672f，\u5c06\u5c40\u57df\u7f51\u5404\u8bbe\u5907\u7684\u6570\u636e\u5305，\u518d\u5206\u53d1\u7ed9\u5404\u81ea\u8bbe\u5907\u3002<\/p>\n

    \u516c\u7f51IP+\u5c40\u57df\u7f51IP\u7684\u6280\u672f，\u9020\u6210\u4e86\u6211\u4eec\u76ee\u524d\u4f7f\u7528\u8bbe\u5907\u7684IPV4\u5730\u5740\u90fd\u662f192.168.X.X\u7684\u539f\u56e0\u3002<\/p>\n

    \u5c40\u57df\u7f51IP\u5730\u5740，\u4e00\u822c\u662f\u8def\u7531\u5668\u901a\u8fc7DHCP\u6280\u672f\u968f\u673a\u5206\u914d\u7ed9\u7f51\u7edc\u8bbe\u5907\u7684，\u4e00\u6bb5\u65f6\u95f4\u540e\u5c40\u57df\u7f51IP\u5730\u5740\u4f1a\u6539\u7248\u3002\u9664\u6b64\u4e4b\u5916，\u6211\u4eec\u7684\u8bbe\u5907\u5728\u4e0d\u540c\u7684\u4e0a\u7f51\u73af\u5883，\u8def\u7531\u5668\u5206\u914d\u7684\u5c40\u57df\u7f51\u5730\u5740\u4e00\u822c\u90fd\u662f\u4e0d\u540c\u7684，\u6bd4\u5982\u5728\u6559\u5e08\u91cc\u8fdeWIFI，\u7b14\u8bb0\u672c\u7535\u8111\u88ab\u5206\u914d\u7684\u5c40\u57df\u7f51\u5730\u5740\u53ef\u80fd\u662f192.168.10.245，\u800c\u56de\u5230\u5bdd\u5ba4，\u8fde\u6709\u7ebf\u7f51，\u7b14\u8bb0\u672c\u7535\u8111\u88ab\u5206\u914d\u7684\u5c40\u57df\u7f51\u5730\u5740\u53d8\u6210\u4e86192.168.1.3\u3002\u56e0\u6b64，\u672c\u673a\u7a0b\u5e8f\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1，\u4e0d\u80fd\u4f7f\u7528\u5c40\u57df\u7f51IP\u5730\u5740，\u800c\u662f\u4f7f\u7528\u4e00\u4e2a\u88ab\u79f0\u4e3a\u672c\u673aIP\u6216\u8005\u56de\u73af\u5730\u5740\u7684\u7279\u6b8aIP：127.0.0.1\u3002\u7f51\u7edc\u8bbe\u5907\u5728\u8bc6\u522b\u5230\u56de\u73af\u5730\u5740\u4f5c\u4e3a\u76ee\u6807\u5730\u5740，\u4e0d\u4f1a\u5c06\u6570\u636e\u4f20\u8f93\u5230\u8def\u7531\u5668\u6216\u8005\u7f51\u5173，\u800c\u662f\u76f4\u63a5\u4f20\u7ed9\u672c\u673a\u3002<\/p>\n

    IPV6<\/h4>\n

    \u4e3a\u89e3\u51b3IP\u67af\u7aed\u95ee\u9898，IPV6\u6a2a\u7a7a\u51fa\u4e16\u3002IPV6\u91c7\u752816\u4e2a\u5b57\u8282128\u4f4d，\u51718\u7ec4（\u6bcf\u7ec4\u4e24\u4e2a\u5b57\u8282）\u6765\u8868\u793a，\u6bd4\u5982：11111101 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000001\u3002IPV6\u91c7\u7528\u5192\u5206\u5341\u516d\u8fdb\u5236，\u5373\u4f7f\u7528\u7b26\u53f7\u5192\u53f7:\u6765\u5206\u7ec4，\u91c7\u7528\u5341\u516d\u8fdb\u5236\u6765\u8868\u793a\u3002\u56e0\u6b64，\u4e0a\u8ff0IPV6\u5730\u5740\u8868\u793a\u4e3a：fd00:0000:0000:0000:0000:0000:0000:0001\u3002\u7531\u4e8eIPV6\u5730\u5740\u5f88\u957f，\u56e0\u6b64\u56fa\u5b9a\u53ef\u4ee5\u7701\u7565\u6bcf\u4e00\u6700\u524d\u9762\u7684\u4e00\u8fde\u4e320，\u56e0\u6b64\u4e0a\u8ff0IPV6\u5730\u5740\u53ef\u7b80\u5199\u4e3a：fd00:0:0:0:0:0:0:1\u3002\u5e76\u4e14，\u89c4\u5b9a\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5c06\u4e2d\u95f4\u76840\u7701\u7565，\u5373\u538b\u7f29\u8868\u793a\u4e3a：fd00::1<\/p>\n

    IPV6\u5171128\u4f4d，\u56e0\u6b64\u53ef\u4ee5\u533a\u5206\u7684\u5730\u5740\u4e3a2\u7684128\u6b21\u65b9\u4e2a，\u53ef\u4ee5\u4e3a\u5730\u7403\u4e0a\u6bcf\u4e00\u7c92\u6c99\u5b50\u90fd\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684IP\u5730\u5740\u3002\u56e0\u6b64，IPV6\u4e00\u5b9a\u662f\u8db3\u591f\u4eba\u4eec\u4f7f\u7528\u3002\u76ee\u524d，IPV6\u6b63\u5728\u9010\u6b65\u63a8\u5e7f，\u5168\u9762\u53d6\u4ee3IPV4\u4ecd\u9700\u65f6\u95f4，\u76ee\u524d\u5f88\u591a\u73af\u5883\u662f\u53cc\u6808（IPV4+IPV6）\u8fd0\u884c\u3002<\/p>\n

    \u7aef\u53e3<\/h3>\n

    \u7aef\u53e3\u662f\u8ba1\u7b97\u673a\u4e2d\u5e94\u7528\u7a0b\u5e8f\u5411\u5916\u53d1\u9001\u6570\u636e\/\u63a5\u6536\u6570\u636e\u7684\u201c\u53e3\u201d，\u6bcf\u4e2a\u5e94\u7528\u7a0b\u5e8f\u90fd\u6709\u4e00\u4e2a\u7aef\u53e3\u53f7\u3002<\/p>\n

    \u7aef\u53e3\u53f7\u662f\u7528\u4e24\u4e2a\u5b57\u8282\u6765\u8868\u793a\u7684，\u4e5f\u5c31\u662f\u4e00\u5171\u67090~65535，\u4e00\u517165536\u4e2a\u7aef\u53e3\u53f7\u3002<\/p>\n

    \u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6，\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4e3a\u5e94\u7528\u7a0b\u5e8f\u5206\u914d\u4e00\u4e2a\u7aef\u53e3\u53f7，\u5e94\u7528\u7a0b\u5e8f\u5c31\u7528\u8fd9\u4e2a\u7aef\u53e3\u53f7\u5411\u7f51\u7edc\u6536\u53d1\u6570\u636e\u3002<\/p>\n

    \u534f\u8bae<\/h3>\n

    \u7f51\u7edc\u534f\u8bae\u662f\u6307\u7f51\u7edc\u901a\u4fe1\u3001\u6570\u636e\u4f20\u8f93\u7684\u6807\u51c6\u6216\u89c4\u8303\u3002\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\u6709OSI\u4e03\u5c42\u6a21\u578b\u548cTCP\/IP\u6a21\u578b，\u5176\u4e2dTCP\/IP\u6a21\u578b\u5c06\u7f51\u7edc\u5212\u5206\u4e3a\u5e94\u7528\u5c42\u3001\u4f20\u8f93\u5c42\u3001\u7f51\u7edc\u5c42\u548c\u7269\u7406\u94fe\u8def\u5c42，TCP\/IP\u6a21\u578b\u662f\u884c\u4e1a\u9ed8\u8ba4\u7684\u6807\u51c6\u3002<\/p>\n

    TCP\/IP\u6a21\u578b\u4e2d\u4e0d\u540c\u5c42\u6709\u4e0d\u540c\u7684\u7f51\u7edc\u534f\u8bae，\u6bd4\u5982HTTP\u3001FTP\u7b49\u5c31\u662f\u5e94\u7528\u5c42\u7684\u534f\u8bae，\u800cTCP\u3001UDP\u662f\u4f20\u8f93\u5c42\u7684\u534f\u8bae，IP\u662f\u7f51\u7edc\u5c42\u7684\u534f\u8bae\u3002<\/p>\n

    UDP \u7a0b\u5e8f\u901a\u4fe1<\/h2>\n

    UDP\u534f\u8bae\u7279\u70b9\u662f\u65e0\u8fde\u63a5，\u53d1\u9001\u540e\u4e0d\u7ba1，\u6240\u4ee5\u901f\u5ea6\u5feb\u3002<\/p>\n

    \u521b\u5efaUDP\u53d1\u9001\u6570\u636e\u7684\u7a0b\u5e8f\u6b65\u9aa4：<\/p>\n

  • \u521b\u5efa\u4e00\u4e2a\u53d1\u9001\u6570\u636e\u7684\u901a\u4fe1\u7aef\u70b9，\u9700\u5305\u62ec\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20：IP\u3001\u7aef\u53e3\u548c\u534f\u8bae\u3002\u53d1\u9001\u65f6\u7684IP\u662f\u672c\u673aIP，\u65e0\u6cd5\u81ea\u5b9a\u4e49（\u66f4\u51c6\u786e\u7684\u662f：\u5728\u521b\u5efaDatagramSocket\u65f6，\u53ef\u4ee5\u7528\u5e26IP\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684\u672c\u5730IP\u5730\u5740\u548c\u7aef\u53e3，\u4f46\u662f\u4e00\u822c\u4e0d\u7528IP\u5bf9\u8c61\u4f5c\u4e3a\u6784\u9020\u51fd\u6570\u53c2\u6570，\u9ed8\u8ba4\u4e3a\u672c\u673aIP）\u3002\u7aef\u53e3\u53f7\u53ef\u6307\u5b9a\u53d1\u9001\u7aef\u53e3\u53f7，\u4f46\u662f\u7531\u4e8e\u7aef\u53e3\u53f7\u4e0d\u80fd\u4e0e\u522b\u7684\u7a0b\u5e8f\u5360\u7528\u7684\u7aef\u53e3\u53f7，\u56e0\u6b64\u4e00\u822c\u4f7f\u7528\u7cfb\u7edf\u7ed9\u7684\u7aef\u53e3\u53f7\u3002\u534f\u8bae\u5219\u4f53\u73b0\u5230\u7c7b\u4e0a，UDP\u4f7f\u7528DatagramSocket\u3002<\/li>\n
  • \u5c01\u88c5\u6570\u636e\u5305\u3002\u5c31\u50cf\u5c01\u88c5\u53d1\u9001\u51fa\u53bb\u7684\u5feb\u9012\u5305\u9700\u8981\u5305\u542b\u6536\u8d27\u5730\u5740\u548c\u6536\u8d27\u4eba\u3002UDP\u6570\u636e\u5305\u9700\u8981\u5305\u542b\u53d1\u9001\u7684\u6570\u636e\u672c\u8eab（\u5b57\u8282\u6570\u7ec4）\u3001\u76ee\u6807\u5730\u5740（IP），\u76ee\u6807\u7aef\u53e3\u53f7\u3002\u5176\u4e2d，IP\u9700\u8981\u4f7f\u7528IP\u7c7bInetAddress\u521b\u5efa\u5bf9\u8c61\u3002UDP\u6570\u636e\u5305\u4e3aDatagramPacket\u7c7b，\u9700\u8981\u7528\u5b57\u8282\u6570\u7ec4\u6570\u636e\u672c\u8eab\u3001IP\u5bf9\u8c61\u548c\u7aef\u53e3\u53f7\u5c01\u88c5\u3002<\/li>\n
  • \u53d1\u9001\u6570\u636e\u3002DatagramSocket\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5\u53d1\u9001\u6570\u636e\u5305\u3002<\/li>\n
  • \u91ca\u653e\u8d44\u6e90\u3002DatagramSocket\u5bf9\u8c61\u5b58\u5728\u65f6\u5360\u7528\u4e86\u7cfb\u7edf\u8d44\u6e90，\u56e0\u4e3a\u7cfb\u7edf\u5f00\u8f9f\u4e86\u7aef\u53e3\u53f7\u8ba9\u7a0b\u5e8f\u72ec\u5360\u4f7f\u7528，\u56e0\u6b64\u9700\u8981\u8c03\u7528close（）\u65b9\u6cd5\u91ca\u653e\u8d44\u6e90\u3002<\/li>\n

    \/\/ \u53d1\u9001\u7aef <\/span>
    \npublic<\/span> class<\/span> SendMessage<\/span> {<\/span>
    \n public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> throws<\/span> IOException<\/span> {<\/span>
    \n \/\/ 1. \u521b\u5efa\u4e00\u4e2a\u53d1\u9001UDP\u7684\u901a\u4fe1\u5bf9\u8c61 <\/span>
    \n DatagramSocket<\/span> socket =<\/span> new<\/span> DatagramSocket<\/span>(<\/span>)<\/span>;<\/span> <\/p>\n

    \/\/ 2. \u5c01\u88c5\u6570\u636e\u5305 <\/span>
    \n \/\/ \u76ee\u7684\u5730\u5740\u548c\u7aef\u53e3 <\/span>
    \n String<\/span> ip =<\/span> "127.0.0.1"<\/span>;<\/span> \/\/ \u53d1\u9001\u5230\u672c\u673a，\u7528\u56de\u73af\u5730\u5740 <\/span>
    \n InetAddress<\/span> destinationIP =<\/span> InetAddress<\/span>.<\/span>getByName<\/span>(<\/span>ip)<\/span>;<\/span> \/\/ \u76ee\u7684\u5730\u5740 <\/span>
    \n int<\/span> destinationPort =<\/span> 10086<\/span>;<\/span>
    \n \/\/ \u5f85\u53d1\u9001\u7684\u6570\u636e <\/span>
    \n String<\/span> data =<\/span> "hello, world"<\/span>;<\/span> \/\/ \u5f85\u53d1\u9001\u7684\u6570\u636e：hello, world <\/span>
    \n byte<\/span>[<\/span>]<\/span> dataBytes =<\/span> data.<\/span>getBytes<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4 <\/span>
    \n DatagramPacket<\/span> packet =<\/span> new<\/span> DatagramPacket<\/span>(<\/span>dataBytes,<\/span> dataBytes.<\/span>length,<\/span> destinationIP,<\/span> destinationPort)<\/span>;<\/span> \/\/ \u6570\u636e\u5305\u5bf9\u8c61 <\/span><\/p>\n

    \/\/ 3. \u53d1\u9001\u6570\u636e\u5305 <\/span>
    \n socket.<\/span>send<\/span>(<\/span>packet)<\/span>;<\/span> <\/p>\n

    \/\/ 4. \u91ca\u653e\u8d44\u6e90 <\/span>
    \n socket.<\/span>close<\/span>(<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    UDP\u63a5\u6536\u6570\u636e\u7684\u7a0b\u5e8f\u6b65\u9aa4：<\/p>\n

  • \u540c\u53d1\u9001\u6570\u636e\u76f8\u4f3c，\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u63a5\u6536\u6570\u636e\u7684\u901a\u4fe1\u7aef\u70b9，\u4e5f\u662f\u5305\u62ec\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20：IP\u3001\u7aef\u53e3\u548c\u534f\u8bae\u3002\u63a5\u6536\u65f6\u7684IP\u662f\u672c\u673a\u53f7\u3002\u7aef\u53e3\u53f7\u9700\u8981\u6ce8\u610f，\u8981\u4f7f\u7528\u4e0e\u53d1\u9001\u6570\u636e\u4e2d\u7684\u53d1\u9001\u6570\u636e\u5305\u7684\u76ee\u6807\u7aef\u53e3\u53f7，\u4e0d\u5bf9\u5e94\u5219\u63a5\u6536\u4e0d\u5230\u6570\u636e\u3002\u534f\u8bae\u4e5f\u662f\u4f53\u73b0\u5230\u7c7b\u4e0a，UDP\u4e3aDatagramSocket\u3002<\/li>\n
  • \u63a5\u6536\u6570\u636e\u3002\u53d1\u9001\u6570\u636e\u7684\u662fDatagramPacket\u5bf9\u8c61，\u63a5\u6536\u6570\u636e\u4e5f\u9700\u8981\u7528\u4e00\u4e2aDatagramPacket\u5bf9\u8c61\u8fdb\u884c\u63a5\u6536，\u53ef\u4ee5\u60f3\u8c61\u4e3a\u6536\u5feb\u9012\u65f6，\u9700\u8981\u7528\u4e00\u4e2a\u5feb\u9012\u76d2\u5b50\u53bb\u63a5\u6536\u3002\u4e0e\u53d1\u9001\u65f6\u9700\u8981\u6570\u636e\u5305DatagramPacket\u5bf9\u8c61\u9700\u8981\u5305\u542b\u6570\u636e\u672c\u8eab（\u5b57\u8282\u6570\u7ec4）\u3001\u76ee\u6807\u5730\u5740（IP），\u76ee\u6807\u7aef\u53e3\u53f7\u7b49\u5185\u5bb9\u65f6\u4e0d\u540c，\u63a5\u6536\u6570\u636e\u7684\u6570\u636e\u5305，\u53ea\u9700\u8981\u5b9a\u4e49\u6570\u636e\u5305\u7684\u5927\u5c0f\u5373\u53ef（\u5b57\u8282\u6570\u7ec4\u548c\u63a5\u6536\u6570\u636e\u7684\u957f\u5ea6）\u3002<\/li>\n
  • \u89e3\u6790\u6570\u636e\u3002\u63a5\u6536\u7684\u662fDatagramPacket\u5bf9\u8c61，\u8c03\u7528\u76f8\u5e94\u7684\u65b9\u6cd5，\u53ef\u4ee5\u83b7\u53d6\u6570\u636e\u5305\u7684\u6570\u636e\u672c\u8eab\u3001\u6765\u6e90\u5730\u5740（IP）\u3001\u6765\u6e90\u7aef\u53e3\u53f7\u3002<\/li>\n
  • \u5173\u95ed\u8d44\u6e90\u3002\u4e0e\u53d1\u9001\u6570\u636e\u76f8\u540c，\u9700\u8981\u8c03\u7528close（）\u65b9\u6cd5\u91ca\u653e\u8d44\u6e90\u3002<\/li>\n

    \/\/ \u63a5\u6536\u7aef <\/span>
    \npublic<\/span> class<\/span> ReceiveMessage<\/span> {<\/span>
    \n public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> throws<\/span> IOException<\/span> {<\/span>
    \n \/\/ 1. \u521b\u5efa\u4e00\u4e2a\u63a5\u6536UDP\u7684\u901a\u4fe1\u5bf9\u8c61 <\/span>
    \n DatagramSocket<\/span> socket =<\/span> new<\/span> DatagramSocket<\/span>(<\/span>10086<\/span>)<\/span>;<\/span> \/\/ \u6307\u5b9a\u63a5\u6536\u7aef\u53e3\u4e3a10086 <\/span><\/p>\n

    \/\/ 2. \u63a5\u6536\u6570\u636e <\/span>
    \n byte<\/span>[<\/span>]<\/span> buffer =<\/span> new<\/span> byte<\/span>[<\/span>1024<\/span>]<\/span>;<\/span> \/\/ \u521b\u5efa\u4e00\u4e2a1024\u5b57\u8282\u7684\u5b57\u8282\u6570\u7ec4\u4f5c\u4e3a\u6570\u636e\u7f13\u51b2\u533a，\u7528\u4e8e\u4e34\u65f6\u5b58\u50a8\u4ece\u7f51\u7edc\u63a5\u6536\u5230\u7684\u6570\u636e <\/span>
    \n DatagramPacket<\/span> packet =<\/span> new<\/span> DatagramPacket<\/span>(<\/span>buffer,<\/span> buffer.<\/span>length)<\/span>;<\/span> \/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u636e\u5305\u5bf9\u8c61，\u6700\u5927\u63a5\u6536\u6570\u636e\u957f\u5ea6\u4e3a\u6570\u7ec4\u957f\u5ea6 <\/span>
    \n socket.<\/span>receive<\/span>(<\/span>packet)<\/span>;<\/span> <\/p>\n

    \/\/ 3. \u89e3\u6790\u6570\u636e <\/span>
    \n byte<\/span>[<\/span>]<\/span> data =<\/span> packet.<\/span>getData<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u83b7\u53d6\u6570\u636e\u5305\u4e2d\u7684\u6570\u636e <\/span>
    \n String<\/span> receivedData =<\/span> new<\/span> String<\/span>(<\/span>data,<\/span> 0<\/span>,<\/span> packet.<\/span>getLength<\/span>(<\/span>)<\/span>)<\/span>;<\/span> \/\/ \u5c06\u6570\u636e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32 <\/span>
    \n InetAddress<\/span> sourceAddress =<\/span> packet.<\/span>getAddress<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u83b7\u53d6\u53d1\u9001\u65b9\u7684IP\u5730\u5740 <\/span>
    \n String<\/span> sourceAddressStr =<\/span> sourceAddress.<\/span>getHostAddress<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u89e3\u6790\u4e3aIP\u5730\u5740\u5b57\u7b26\u4e32 <\/span>
    \n int<\/span> sourcePort =<\/span> packet.<\/span>getPort<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u83b7\u53d6\u53d1\u9001\u65b9\u7684\u7aef\u53e3\u53f7 <\/span><\/p>\n

    \/\/ \u6253\u5370\u51fa\u63a5\u6536\u5230\u7684\u6570\u636e\u548c\u53d1\u9001\u65b9\u7684IP\u5730\u5740\u53ca\u7aef\u53e3\u53f7 <\/span>
    \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"\u6536\u5230\u6765\u81eaIP\u4e3a"<\/span> +<\/span> sourceAddressStr +<\/span> "，\u7aef\u53e3\u53f7\u4e3a"<\/span> +<\/span> sourcePort +<\/span> "\u7684\u6570\u636e："<\/span> +<\/span> receivedData)<\/span>;<\/span> <\/p>\n

    \/\/ 4. \u91ca\u653e\u8d44\u6e90 <\/span>
    \n socket.<\/span>close<\/span>(<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u6536\u5230\u6765\u81eaIP\u4e3a127.0.0.1，\u7aef\u53e3\u53f7\u4e3a65290\u7684\u6570\u636e：hello, world<\/p>\n

    \u8fdb\u7a0b\u5df2\u7ed3\u675f，\u9000\u51fa\u4ee3\u7801\u4e3a 0<\/span><\/p>\n

    TCP \u7a0b\u5e8f\u901a\u4fe1<\/h2>\n

    TCP\u534f\u8bae\u662f\u5efa\u7acb\u8fde\u63a5\u7684\u534f\u8bae，\u4e5f\u5c31\u662f\u5728\u53d1\u9001\u6570\u636e\u4e4b\u524d，\u9700\u8981\u5148\u5efa\u7acb\u8fde\u63a5，\u8fde\u63a5\u5efa\u7acb\u5931\u8d25\u5219\u4f1a\u5f02\u5e38，\u4e0d\u53ef\u53d1\u9001\u6570\u636e\u3002TCP\u534f\u8bae\u4e0eUDP\u534f\u8bae\u4e0d\u540c，TCP\u53d1\u9001\u6570\u636e\u65e0\u9700\u5c01\u88c5\u6210\u6570\u636e\u5305，\u8fd8\u662f\u901a\u8fc7\u6570\u636e\u6d41\u53d1\u9001\u6570\u636e，\u56e0\u6b64\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u5982\u540cIO\u6d41\u3002<\/p>\n

    TCP\u534f\u8bae\u9700\u8981\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5：<\/p>\n

  • \u7b2c\u4e00\u6b21\u63e1\u624b：\u5ba2\u6237\u7aef\u5f80\u670d\u52a1\u7aef\u53d1\u9001\u4fe1\u606f，\u8bf7\u6c42\u5efa\u7acb\u8fde\u63a5<\/li>\n
  • \u7b2c\u4e8c\u6b21\u63e1\u624b：\u670d\u52a1\u7aef\u53d1\u9001\u4fe1\u606f，\u8868\u660e\u7edf\u4e00\u5efa\u7acb\u8fde\u63a5\u3002\u6b64\u65f6，\u670d\u52a1\u7aef\u5df2\u5c31\u7eea，\u7b49\u5f85\u5ba2\u6237\u7aef\u786e\u8ba4\u5c31\u7eea<\/li>\n
  • \u7b2c\u4e09\u6b21\u63e1\u624b：\u5ba2\u6237\u7aef\u5f80\u670d\u52a1\u7aef\u53d1\u9001\u6d88\u606f，\u8868\u660e\u81ea\u5df1\u5df2\u5c31\u7eea，\u51c6\u5907\u53d1\u9001\u6570\u636e\u3002\u670d\u52a1\u7aef\u6536\u5230\u6d88\u606f，\u786e\u8ba4\u5ba2\u6237\u7aef\u5c31\u7eea，\u7b49\u5f85\u6536\u53d6\u6d88\u606f\u3002<\/li>\n

    \u521b\u5efaTCP\u53d1\u9001\u6d88\u606f\u7684\u7a0b\u5e8f\u6b65\u9aa4\u4e3a：<\/p>\n

  • \u521b\u5efa\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u901a\u4fe1\u7aef\u70b9，\u4e0eUDP\u7684DatagramSocket\u4e0d\u9700\u8981\u63a5\u6536\u7aefIP\u548c\u7aef\u53e3\u53f7\u4f5c\u4e3a\u53c2\u6570\u4e0d\u540c（\u56e0\u4e3a\u63a5\u6536\u7aefIP\u548c\u7aef\u53e3\u53f7\u88ab\u5c01\u88c5\u5230\u4e86\u6570\u636e\u5305DatagramPacket\u5185），\u5ba2\u6237\u7aefSocket\u5bf9\u8c61\u5728\u521b\u5efa\u65f6\u5c31\u9700\u8981\u63a5\u6536\u7aefIP\u548c\u7aef\u53e3\u53f7，\u56e0\u4e3a\u5728\u53d1\u9001\u6570\u636e\u4e4b\u524d，\u5c31\u8981\u4e0e\u670d\u52a1\u7aef\u5efa\u7acb\u8fde\u63a5（\u521b\u5efa\u5bf9\u8c61\u65f6\u5c31\u5efa\u7acb\u8fde\u63a5）\u3002\u5ba2\u6237\u7aefSocket\u5bf9\u8c61\u521b\u5efa\u4e0eDatagramSocket\u76f8\u4f3c\u70b9\u5728\u4e8e，\u53ef\u4ee5\u4e0d\u6307\u5b9a\u672c\u673a\u7684IP\u548c\u7aef\u53e3\u53f7，\u4f7f\u7528\u7cfb\u7edf\u7ed9\u7684\u7aef\u53e3\u53f7\u548c\u672c\u673aIP\u3002<\/li>\n
  • \u4eceSocket\u4e2d\u83b7\u53d6\u53d1\u9001\u6570\u636e\u7684\u8f93\u51fa\u6d41（\u539f\u59cb\u5b57\u8282\u6d41\u51fa\u7559），\u901a\u8fc7\u8f93\u51fa\u6d41\u53d1\u9001\u6570\u636e\u3002Socket\u8f93\u51fa\u6d41\u662fIO\u6d41，\u56e0\u6b64\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5b57\u8282\u6d41\u3001\u5b57\u7b26\u6d41\u3001\u8f6c\u6362\u6d41\u3001\u7f13\u51b2\u6d41\u7b49\u539f\u59cb\u6d41\u548c\u5904\u7406\u6d41\u3002<\/li>\n
  • \u91ca\u653e\u8d44\u6e90\u3002\u521b\u5efaSocket\u5360\u7528\u7cfb\u7edf\u8d44\u6e90，\u56e0\u4e3a\u7cfb\u7edf\u5206\u914d\u4e86\u7aef\u53e3\u53f7，\u9700\u8981\u8c03\u7528close()\u65b9\u6cd5\u91ca\u653e\u8d44\u6e90\u3002\u6b64\u5916，IO\u6d41\u4e5f\u9700\u8981\u5173\u95ed\u3002\u9700\u8981\u6ce8\u610f，\u91ca\u653e\u8d44\u6e90\u6709\u4e00\u5b9a\u987a\u5e8f，\u5ba2\u6237\u7aef\u53d1\u9001\u5b8c\u6570\u636e\u7acb\u9a6c\u8fdb\u884c\u5173\u95ed，\u5b58\u5728\u4e24\u79cd\u53ef\u80fd：1. \u6570\u636e\u8fd8\u5728\u7f13\u51b2\u533a\u672a\u88ab\u5b8c\u5168\u53d1\u9001；2. \u670d\u52a1\u7aef\u672a\u5b8c\u5168\u63a5\u6536\u6570\u636e\u3002\u56e0\u6b64，\u4f7f\u7528flush()\u8ba9\u7f13\u51b2\u533a\u7684\u6570\u636e\u7acb\u5373\u53d1\u9001\u3002<\/li>\n

    \/\/ \u5ba2\u6237\u7aef <\/span>
    \npublic<\/span> class<\/span> Client<\/span> {<\/span>
    \n public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> throws<\/span> IOException<\/span> {<\/span>
    \n \/\/ 1. \u521b\u5efa\u4e00\u4e2aSocket\u5bf9\u8c61 <\/span>
    \n Socket<\/span> socket =<\/span> new<\/span> Socket<\/span>(<\/span>"127.0.0.1"<\/span>,<\/span> 52522<\/span>)<\/span>;<\/span> \/\/ \u6307\u5b9a\u63a5\u6536\u7aef\u7684IP\u548c\u7aef\u53e3 <\/span><\/p>\n

    \/\/ 2. \u901a\u8fc7Socket\u5bf9\u8c61\u83b7\u53d6\u8f93\u51fa\u6d41 <\/span>
    \n OutputStream<\/span> os =<\/span> socket.<\/span>getOutputStream<\/span>(<\/span>)<\/span>;<\/span>
    \n BufferedOutputStream<\/span> bos =<\/span> new<\/span> BufferedOutputStream<\/span>(<\/span>os)<\/span>;<\/span> \/\/ \u4f7f\u7528\u7f13\u51b2\u6d41（\u4ec5\u505a\u6f14\u793a，\u975e\u5fc5\u987b） <\/span>
    \n OutputStreamWriter<\/span> osw =<\/span> new<\/span> OutputStreamWriter<\/span>(<\/span>bos)<\/span>;<\/span> \/\/ \u4f7f\u7528OutputStreamWriter\u5c06\u5b57\u8282\u6d41\u8f6c\u6362\u4e3a\u5b57\u7b26\u6d41 <\/span>
    \n osw.<\/span>write<\/span>(<\/span>"Hello, Server!"<\/span>)<\/span>;<\/span> \/\/ \u5199\u5165\u6570\u636e <\/span>
    \n osw.<\/span>flush<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u5237\u65b0\u7f13\u51b2\u533a，\u786e\u4fdd\u6570\u636e\u53d1\u9001 <\/span><\/p>\n

    \/\/ 3. \u91ca\u653e\u8d44\u6e90（\u6309\u6b63\u786e\u987a\u5e8f） <\/span>
    \n osw.<\/span>close<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u91ca\u653e\u5b57\u7b26\u6d41\u8d44\u6e90 <\/span>
    \n bos.<\/span>close<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u91ca\u653e\u7f13\u51b2\u6d41\u8d44\u6e90 <\/span>
    \n socket.<\/span>close<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u91ca\u653eSocket\u8d44\u6e90，\u81ea\u52a8\u5173\u95ed\u5e95\u5c42\u7684\u5b57\u8282\u8f93\u5165\u6d41\u548c\u5b57\u8282\u8f93\u51fa\u6d41 <\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u521b\u5efaTCP\u63a5\u6536\u6d88\u606f\u7684\u7a0b\u5e8f\u6b65\u9aa4\u4e3a：<\/p>\n

  • \u521b\u5efa\u4e00\u4e2a\u63a5\u6536\u6570\u636e\u7684\u901a\u4fe1\u7aef\u70b9\u3002\u4e0eUDP\u4e0d\u540c，TCP\u7684\u670d\u52a1\u7aef\u91c7\u7528\u4e0e\u5ba2\u6237\u7aef\u4e0d\u540c\u7684\u7c7bServerSocket\u3002\u7aef\u53e3\u53f7\u4e0eUDP\u534f\u8bae\u76f8\u4f3c，\u8981\u4f7f\u7528\u5ba2\u6237\u7aefSocket\u76ee\u6807\u7aef\u53e3\u53f7\u76f8\u540c\u7684\u7aef\u53e3\u53f7，\u4e0d\u5bf9\u5e94\u5219\u63a5\u6536\u4e0d\u5230\u6570\u636e\u3002<\/li>\n
  • \u7b49\u5f85\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5\u3002\u8c03\u7528accept()\u65b9\u6cd5，\u4e00\u76f4\u76d1\u542c\u7aef\u53e3，\u7b49\u5f85\u5ba2\u6237\u7aef\u8fdb\u884c\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\u3002\u5efa\u7acb\u8fde\u63a5\u4e4b\u524d，\u7ebf\u7a0b\u662f\u963b\u585e\u7684\u72b6\u6001\u3002\u94fe\u63a5\u5efa\u7acb\u540e，\u8fd4\u56de\u4e00\u4e2a\u5ba2\u6237\u7aefSocket\u5bf9\u8c61\u3002<\/li>\n
  • TCP\u5efa\u7acb\u8fde\u63a5\u540e，\u901a\u8fc7IO\u6d41\u4f20\u8f93\u6570\u636e\u3002\u53d1\u9001\u7aef\u662fOutput，\u63a5\u6536\u7aef\u662fInput\u3002\u56e0\u6b64，\u4eceSocket\u5bf9\u8c61\u4e2d\u83b7\u5f97IO\u57fa\u672c\u7684\u5b57\u8282\u8f93\u5165\u6d41\u3002<\/li>\n
  • \u89e3\u6790\u6570\u636e\u3002\u5b57\u8282\u8f93\u5165\u6d41\u53ef\u4ee5\u901a\u8fc7\u5b57\u7b26\u6d41\u3001\u8f6c\u6362\u6d41\u3001\u7f13\u51b2\u6d41\u7b49\u5904\u7406\u6d41，\u5904\u7406\u89e3\u6790\u6570\u636e\u3002<\/li>\n
  • \u91ca\u653e\u8d44\u6e90\u3002\u91ca\u653eIO\u6d41\u548cSocket\u8d44\u6e90\u3002<\/li>\n

    \/\/ \u670d\u52a1\u5668\u7aef <\/span>
    \npublic<\/span> class<\/span> Server<\/span> {<\/span>
    \n public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> throws<\/span> IOException<\/span> {<\/span>
    \n \/\/ 1. \u521b\u5efa\u4e00\u4e2aServerSocket\u5bf9\u8c61 <\/span>
    \n ServerSocket<\/span> serverSocket =<\/span> new<\/span> ServerSocket<\/span>(<\/span>52522<\/span>)<\/span>;<\/span> <\/p>\n

    \/\/ 2. \u7b49\u5f85\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5 <\/span>
    \n Socket<\/span> socket =<\/span> serverSocket.<\/span>accept<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u94fe\u63a5\u5efa\u7acb\u540e，\u8fd4\u56de\u4e00\u4e2aSocket\u5bf9\u8c61 <\/span><\/p>\n

    \/\/ 3. \u83b7\u5f97\u5b57\u8282\u8f93\u5165\u6d41\u5bf9\u8c61 <\/span>
    \n InputStream<\/span> is =<\/span> socket.<\/span>getInputStream<\/span>(<\/span>)<\/span>;<\/span> <\/p>\n

    \/\/ 4. \u5c06\u5b57\u8282\u8f93\u5165\u6d41\u8f6c\u6362\u4e3a\u5b57\u7b26\u8f93\u5165\u6d41，\u8bfb\u53d6\u6570\u636e\u5e76\u6253\u5370\u6210\u5b57\u7b26\u4e32 <\/span>
    \n InputStreamReader<\/span> isr =<\/span> new<\/span> InputStreamReader<\/span>(<\/span>is)<\/span>;<\/span>
    \n int<\/span> len =<\/span> 0<\/span>;<\/span>
    \n char<\/span>[<\/span>]<\/span> chs =<\/span> new<\/span> char<\/span>[<\/span>1024<\/span>]<\/span>;<\/span>
    \n if<\/span> (<\/span>(<\/span>len =<\/span> isr.<\/span>read<\/span>(<\/span>chs)<\/span>)<\/span> !=<\/span> –<\/span>1<\/span>)<\/span> {<\/span>
    \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>new<\/span> String<\/span>(<\/span>chs,<\/span> 0<\/span>,<\/span> len)<\/span>)<\/span>;<\/span>
    \n }<\/span> <\/p>\n

    \/\/ \u4e00\u822c\u60c5\u51b5\u4e0b，\u670d\u52a1\u5668\u7aef\u4f1a\u5faa\u73af\u63a5\u6536\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42 <\/span>
    \n \/\/ \u65e0\u9700\u624b\u52a8\u5173\u95edSocket <\/span>
    \n \/\/ 5. \u91ca\u653e\u8d44\u6e90 <\/span>
    \n isr.<\/span>close<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u5173\u95ed\u5b57\u7b26\u8f93\u5165\u6d41 <\/span>
    \n \/\/ is.close(); \/\/ \u65e0\u9700\u624b\u52a8\u5173\u95ed\u5b57\u8282\u8f93\u5165\u6d41 <\/span>
    \n socket.<\/span>close<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u5173\u95edSocket，\u4f1a\u81ea\u52a8\u5173\u95ed\u5e95\u5c42\u7684\u5b57\u8282\u8f93\u5165\u6d41\u548c\u5b57\u8282\u8f93\u51fa\u6d41 <\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    TCP\u534f\u8bae\u5efa\u7acb\u8fde\u63a5\u9700\u8981\u4e09\u6b21\u63e1\u624b，\u5173\u95ed\u8fde\u63a5\u9700\u8981\u56db\u6b21\u6325\u624b\u3002<\/p>\n

  • \u7b2c\u4e00\u6b21\u6325\u624b：\u5ba2\u6237\u7aef\u53d1\u8d77\u4fe1\u606f，\u8bf7\u6c42\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n
  • \u7b2c\u4e8c\u6b21\u6325\u624b：\u670d\u52a1\u7aef\u6536\u5230\u4fe1\u606f，\u4f46\u662f\u6536\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u5173\u95ed\u8fde\u63a5\u8bf7\u6c42\u65f6，\u670d\u52a1\u7aef\u8fd8\u6ca1\u6709\u5b8c\u5168\u6536\u5168\u6240\u6709\u4e4b\u524d\u53d1\u9001\u7684\u6570\u636e\u3002\u4f46\u662f，\u670d\u52a1\u7aef\u9700\u8981\u8ba9\u5ba2\u6237\u7aef\u77e5\u9053\u5b83\u6536\u5230\u4e86\u5173\u95ed\u8fde\u63a5\u7684\u8bf7\u6c42\u3002\u56e0\u6b64，\u670d\u52a1\u7aef\u4f1a\u7ed9\u5ba2\u6237\u7aef\u53d1\u9001\u786e\u8ba4\u6536\u5230\u5173\u95ed\u8bf7\u6c42\u7684\u4fe1\u606f\u3002<\/li>\n
  • \u7b2c\u4e09\u6b21\u6325\u624b：\u5f53\u670d\u52a1\u7aef\u63a5\u6536\u5b8c\u6240\u6709\u6570\u636e\u540e，\u4f1a\u518d\u6b21\u7ed9\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u6761\u4fe1\u606f，\u8868\u660e\u81ea\u5df1\u5df2\u7ecf\u5b89\u5168\u6536\u5230\u6240\u6709\u4f20\u8f93\u7684\u6570\u636e\u3002\u53d1\u9001\u786e\u8ba4\u5173\u95ed\u8fde\u63a5\u7684\u4fe1\u606f\u7ed9\u5ba2\u6237\u7aef，\u8868\u660e\u670d\u52a1\u5668\u5df2\u5c31\u7eea，\u51c6\u5907\u5173\u95ed\u3002<\/li>\n
  • \u7b2c\u56db\u6b21\u6325\u624b：\u5f53\u5ba2\u6237\u7aef\u6536\u5230\u670d\u52a1\u7aef\u53d1\u9001\u7684\u5173\u95ed\u786e\u8ba4\u8bf7\u6c42\u540e，\u53d1\u9001\u4e00\u4e2a\u81ea\u5df1\u5df2\u786e\u8ba4\u5173\u95ed\u8fde\u63a5\u7684\u8bf7\u6c42，\u53d1\u9001\u540e，\u5ba2\u6237\u7aef\u5173\u95ed\u8fde\u63a5\u3002\u800c\u670d\u52a1\u5668\u6536\u5230\u4fe1\u606f\u540e，\u4e5f\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"

    \u4ec0\u4e48\u662f\u7f51\u7edc\u7f16\u7a0b
    \n\u4ec0\u4e48\u662f\u7f51\u7edc\u7f16\u7a0b，\u76f8\u6bd4\u4e8e\u7f16\u5199\u7a0b\u5e8f\u5728\u672c\u673a\u4e0a\u8fd0\u884c，\u7f51\u7edc\u7f16\u7a0b\u662f\u6307\u7f16\u5199\u4e24\u53f0\u4e0d\u540c\u7684\u8ba1\u7b97\u673a\u7684\u7a0b\u5e8f，\u57fa\u4e8e\u7f51\u7edc\u534f\u8bae，\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u6570\u636e\u901a\u4fe1\u3002
    \n\u5e38\u89c1\u7684\u7f51\u7edc\u7a0b\u5e8f\u8f6f\u4ef6\u67b6\u6784\u6709：BS（Broser\u6d4f\u89c8\u5668\/Server\u670d\u52a1\u5668）\u67b6\u6784\u3001CS（Client\u5ba2\u6237\u7aef\/Server\u670d\u52a1\u5668）\u67b6\u6784
    \nBS\u67b6\u6784：\u4f18\u52bf\u662f\u7528\u6237\u4e0d\u7528\u4e0b\u8f7d\u5ba2\u6237\u7aef，\u4f7f\u7528\u6d4f\u89c8\u5668\u5373\u53ef\u5feb<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,371,78],"topic":[],"class_list":["post-63470","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-371","tag-78"],"yoast_head":"\nJava\u7f51\u7edc\u7f16\u7a0b\u5b66\u4e60\u7b14\u8bb0\uff0c\u4ece\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20\u5230TCP\/UDP\u534f\u8bae - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/63470.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u7f51\u7edc\u7f16\u7a0b\u5b66\u4e60\u7b14\u8bb0\uff0c\u4ece\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20\u5230TCP\/UDP\u534f\u8bae - 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