{"id":210,"date":"2026-07-22T19:52:57","date_gmt":"2026-07-22T11:52:57","guid":{"rendered":"https:\/\/mofan.help\/?p=210"},"modified":"2026-07-24T19:05:07","modified_gmt":"2026-07-24T11:05:07","slug":"%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/mofan.help\/index.php\/2026\/07\/22\/%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b\/","title":{"rendered":"\u7f51\u7edc\u7f16\u7a0b"},"content":{"rendered":"\n

\u7f51\u7edc\u7f16\u7a0b\u57fa\u7840<\/h1>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

\u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20\u3001<\/h1>\n\n\n\n

\u6982\u5ff5<\/h2>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

IP<\/h2>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

InetAddress<\/h2>\n\n\n\n

InetAddress<\/code> \u662f Java \u7f51\u7edc\u7f16\u7a0b\u4e2d\u7528\u4e8e\u5c01\u88c5 IP \u5730\u5740\uff08\u652f\u6301 IPv4\/IPv6\uff09\u53ca\u4e3b\u673a\u540d<\/strong>\u7684\u6838\u5fc3\u7c7b\u3002\u5b83\u4e0d\u63d0\u4f9b\u516c\u6709\u6784\u9020\u65b9\u6cd5\uff0c\u901a\u8fc7\u9759\u6001\u5de5\u5382\u65b9\u6cd5\uff08\u5982 getByName(String host)<\/code>\u3001getLocalHost()<\/code>\uff09\u83b7\u53d6\u5b9e\u4f8b\uff0c\u6838\u5fc3\u529f\u80fd\u662f\u57df\u540d\u89e3\u6790<\/strong>\uff08\u6b63\u5411\uff09\u548c\u83b7\u53d6\u539f\u59cb IP \u5b57\u8282<\/strong>\uff08getAddress()<\/code>\uff09\u3002<\/p>\n\n\n\n

public class InetAddressDemo1 {\n    public static void main(String[] args) throws UnknownHostException {\n\n        InetAddress ia = InetAddress.getByAddress(new byte[]{(byte) 192, (byte) 168,62,25});\n        String hostName = ia.getHostName();\n        String hostAddress = ia.getHostAddress();\n        System.out.println(hostName);\n        System.out.println(hostAddress);\n\n    }\n}<\/code><\/pre>\n\n\n\n
\u7aef\u53e3\u53f7<\/h2>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u534f\u8bae<\/h2>\n\n\n\n
\u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
UDP<\/h3>\n\n\n\n
\u53d1\u9001\u6570\u636e<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u53d1\u9001\u6570\u636e\uff1a<\/p>\n\n\n\n
public class UdpDemo1 {\n    \/*\n    * UDP\u53d1\u9001\u6570\u636e\n    *\/\n    public static void main(String[] args) throws IOException {\n        \/\/1.\u521b\u5efaDatagramSocket\u5bf9\u8c61\uff08\u5feb\u9012\u516c\u53f8\uff09\n        DatagramSocket dgs = new DatagramSocket();\n        \/\/2.\u6253\u5305\u6570\u636e\n        byte[] buf = \"\u54c8\u55bd\u5440\".getBytes();\n        InetAddress ia = InetAddress.getByName(\"127.0.0.1\");\n        int port = 10086;\n        DatagramPacket dgp = new DatagramPacket(buf, buf.length, ia, port);\n        \/\/3.\u53d1\u9001\u6570\u636e\n        dgs.send(dgp);\n        \/\/4.\u91ca\u653e\u8d44\u6e90\n        dgs.close();\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u63a5\u6536\u6570\u636e<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u63a5\u6536\u6570\u636e\uff1a<\/p>\n\n\n\n
public class UdpDemo2 {\n    \/*\n    * UDP\u63a5\u6536\u6570\u636e\n    *\/\n    <\/em>public static void main(String[] args) throws IOException {\n        \/\/1.\u521b\u5efaDatagramSocket\u5bf9\u8c61\uff08\u5feb\u9012\u516c\u53f8\uff09\n        <\/em>DatagramSocket ds = new DatagramSocket(10086);\n        \/\/2.\u521b\u5efa\u65b0\u7684\u6253\u5305\u6570\u636e\u7528\u6765\u63a5\u6536\u6570\u636e\n        <\/em>byte[] bytes = new byte[1024];\n        DatagramPacket dp = new DatagramPacket(bytes, bytes.length);\n        \/\/receive\u65b9\u6cd5\u662f\u963b\u585e\u7684\uff0c\u5b83\u4f1a\u7b49\u53d1\u9001\u7aef\u53d1\u9001\u6570\u636e\n        <\/em>ds.receive(dp);\n        \/\/3.\u89e3\u6790\u6570\u636e\n        <\/em>long len = dp.getLength();\n        byte[] data = dp.getData();\n        InetAddress address = dp.getAddress();\n        int port = dp.getPort();\n        System.out<\/em>.println(\"\u63a5\u6536\u5230\u6570\u636e\" + new String(data, 0, (int) len));\n        System.out<\/em>.println(\"\u8be5\u6570\u636e\u662f\u4ece\" + address + \"\u8fd9\u4e2a\u7535\u8111\u7684\" + port + \"\u7aef\u53e3\u53d1\u51fa\u7684\");\n        \/\/4.\u91ca\u653e\u8d44\u6e90\n        <\/em>ds.close();\n    }\n}<\/code><\/pre>\n\n\n\n
UDP\u7684\u4e09\u79cd\u901a\u4fe1\u65b9\u5f0f<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
TCP<\/h3>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
tcp\u53d1\u9001\u63a5\u6536\u6570\u636e\uff1a<\/p>\n\n\n\n
import java.io.IOException;\nimport java.io.OutputStream;\nimport java.net.Socket;\n\npublic class Client {\n    public static void main(String[] args) {\n        try {\n            \/\/ 1. \u521b\u5efaSocket\u5e76\u8fde\u63a5\u670d\u52a1\u5668\n            Socket socket = new Socket(\"127.0.0.1\", 8888);\n            System.out.println(\"\u5df2\u8fde\u63a5\u5230\u670d\u52a1\u5668\uff1a\" + socket.getRemoteSocketAddress());\n\n            \/\/ 2. \u83b7\u53d6\u8f93\u51fa\u6d41\uff0c\u53d1\u9001\u6570\u636e\n            OutputStream os = socket.getOutputStream();\n            String message = \"Hello, Server! \u6211\u662f\u5ba2\u6237\u7aef\u3002\";\n            os.write(message.getBytes());\n            os.flush(); \/\/ \u786e\u4fdd\u6570\u636e\u5b8c\u5168\u53d1\u9001\n            System.out.println(\"\u5df2\u53d1\u9001\u6d88\u606f\uff1a\" + message);\n\n            \/\/ 3. \u5173\u95ed\u8d44\u6e90\uff08\u6ce8\u610f\u5148\u5173\u8f93\u51fa\u6d41\u518d\u5173Socket\uff09\n            os.close();\n            socket.close();\n            System.out.println(\"\u5ba2\u6237\u7aef\u5df2\u5173\u95ed\u3002\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
import java.io.IOException;\nimport java.io.InputStream;\nimport java.net.ServerSocket;\nimport java.net.Socket;\n\npublic class Server {\n    public static void main(String[] args) {\n        try {\n            \/\/ 1. \u521b\u5efaServerSocket\u5e76\u7ed1\u5b9a\u7aef\u53e3\n            ServerSocket serverSocket = new ServerSocket(8888);\n            System.out.println(\"\u670d\u52a1\u5668\u5df2\u542f\u52a8\uff0c\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5...\");\n\n            \/\/ 2. \u76d1\u542c\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\uff08\u963b\u585e\uff09\n            Socket socket = serverSocket.accept();\n            System.out.println(\"\u5ba2\u6237\u7aef\u5df2\u8fde\u63a5\uff1a\" + socket.getRemoteSocketAddress());\n\n            \/\/ 3. \u83b7\u53d6\u8f93\u5165\u6d41\uff0c\u8bfb\u53d6\u5ba2\u6237\u7aef\u6570\u636e\n            InputStream is = socket.getInputStream();\n            byte[] buffer = new byte[1024];\n            int len;\n            while ((len = is.read(buffer)) != -1) {\n                String received = new String(buffer, 0, len);\n                System.out.println(\"\u6536\u5230\u5ba2\u6237\u7aef\u6d88\u606f\uff1a\" + received);\n            }\n\n            \/\/ 4. \u5173\u95ed\u8d44\u6e90\n            is.close();\n            socket.close();\n            serverSocket.close();\n            System.out.println(\"\u670d\u52a1\u5668\u5df2\u5173\u95ed\u3002\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
\u4e09\u6b21\u63e1\u624b<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u56db\u6b21\u6325\u624b<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"
\u7f51\u7edc\u7f16\u7a0b\u57fa\u7840 \u7f51\u7edc\u7f16\u7a0b\u4e09\u8981\u7d20\u3001 \u6982\u5ff5 IP InetAddress InetAddress \u662f Ja […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-learn"],"_links":{"self":[{"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/posts\/210"}],"collection":[{"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":8,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":252,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions\/252"}],"wp:attachment":[{"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mofan.help\/index.php\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}