\u5728\u5ba2\u6237\u673a\/\u670d\u52a1\u5668\u5de5\u4f5c\u6a21\u5f0f\u4e2d\uff0c\u5728Server\u7aef\uff0c\u8981\u51c6\u5907\u63a5\u53d7\u591a\u4e2aClient\u7aef\u8ba1\u7b97\u673a\u7684\u901a\u4fe1\u3002\u4e3a\u6b64\uff0c\u9664\u7528IP\u5730\u5740\u6807\u8bc6Internet\u4e0a\u7684\u8ba1\u7b97\u673a\u4e4b\u5916\uff0c\u53e6\u8fd8\u5f15\u5165\u7aef\u53e3\u53f7\uff0c\u7528\u7aef\u53e3\u53f7\u6807\u8bc6\u6b63\u5728Server\u7aef\u540e\u53f0\u670d\u52a1\u7684\u7ebf\u7a0b\u3002\u7aef\u53e3\u53f7\u4e0eIP\u5730\u5740\u7684\u7ec4\u5408\u79f0\u4e3a\u7f51\u7edc\u5957\u63a5\u5b57\uff08socket\uff09\u3002<\/p>\n
<\/p>\n
Java\u8bed\u8a00\u5728\u5b9e\u73b0C\/S\u6a21\u5f0f\u4e2d\uff0c\u5957\u63a5\u5b57\u5206\u4e3a\u4e24\u7c7b\uff1a
\n\u5728Server\u7aef\uff0cServerSocket\u7c7b\u652f\u6301\u5e95\u5c42\u7684\u7f51\u7edc\u901a\u4fe1\uff1b
\n\u5728Client\u7aef\uff0cSocket\u7c7b\u652f\u6301\u7f51\u7edc\u7684\u5e95\u5c42\u901a\u4fe1\u3002
\nServer\u673a\u901a\u8fc7\u7aef\u53e3\uff08\u603b\u7ebfI\/O\u5730\u5740\uff09\u63d0\u4f9b\u9762\u5411Client\u673a\u7684\u670d\u52a1\uff1bServer\u673a\u5728\u5b83\u7684\u51e0\u4e2a\u4e0d\u540c\u7aef\u53e3\u5206\u522b\u540c\u65f6\u63d0\u4f9b\u51e0\u79cd\u4e0d\u540c\u7684\u670d\u52a1\u3002Client\u63a5\u5165Server\u7684\u67d0\u4e00\u7aef\u53e3\uff0c\u901a\u8fc7\u8fd9\u4e2a\u7aef\u53e3\u63d0\u8bf7Server\u673a\u4e3a\u5176\u670d\u52a1\u3002\u89c4\u5b9a\uff1a\u7aef\u53e3\u53f70~1023\u4f9b\u7cfb\u7edf\u4e13\u7528\u3002\u4f8b\u5982\uff0cHTTP\u534f\u8bae\u5728\u7aef\u53e380\uff0ctelnet\u534f\u8bae\u5728\u7aef\u53e323\u3002\u7aef\u53e31024~65535\u4f9b\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002<\/p>\n
\u5f53Client\u7a0b\u5e8f\u548cServer\u7a0b\u5e8f\u9700\u8981\u901a\u4fe1\u65f6\uff0c\u53ef\u4ee5\u7528Socket\u7c7b\u5efa\u7acb\u5957\u63a5\u5b57\u8fde\u63a5\u3002\u5957\u63a5\u5b57\u8fde\u63a5\u53ef\u60f3\u8c61\u4e3a\u4e00\u4e2a\u7535\u8bdd\u547c\u53eb\uff1a\u6700\u521d\u662fClient\u7a0b\u5e8f\u5efa\u7acb\u547c\u53eb\uff0cServer\u7a0b\u5e8f\u76d1\u542c\uff1b\u547c\u53eb\u5b8c\u6210\u540e\uff0c\u4efb\u4f55\u4e00\u65b9\u90fd\u53ef\u4ee5\u968f\u65f6\u8bb2\u8bdd\u3002<\/p>\n
\u53cc\u65b9\u5b9e\u73b0\u901a\u4fe1\u6709\u6d41\u5f0fsocket\u548c\u6570\u636e\u62a5\u5f0fsocket\u4e24\u79cd\u53ef\u9009\u65b9\u5f0f\uff1a
\n\u6d41\u5f0fsocket\u662f\u6709\u8fde\u63a5\u7684\u901a\u4fe1\uff0c\u5373TCP(Transmission Control Protocol)\uff1a\u6bcf\u6b21\u901a\u4fe1\u524d\u5efa\u7acb\u8fde\u63a5\uff0c\u901a\u4fe1\u7ed3\u675f\u540e\u65ad\u5f00\u8fde\u63a5\u3002\u7279\u70b9\u662f\u53ef\u4ee5\u4fdd\u8bc1\u4f20\u8f93\u7684\u6b63\u786e\u6027\u3001\u53ef\u9760\u6027\u3002
\n\u6570\u636e\u62a5\u5f0fsocket\u662f\u65e0\u8fde\u63a5\u7684\u901a\u4fe1\uff0c\u5373UDP(User Datagram Protocol)\uff1a\u5c06\u6b32\u4f20\u8f93\u7684\u6570\u636e\u5206\u6210 \u5c0f\u5305\uff0c\u76f4\u63a5\u4e0a\u7f51\u53d1\u9001\u3002\u65e0\u9700\u5efa\u7acb\u8fde\u63a5\u548c\u62c6\u9664\u8fde\u63a5\uff0c\u901f\u5ea6\u5feb\uff0c\u4f46\u65e0\u53ef\u9760\u4fdd\u8bc1\u3002<\/p>\n
\u6d41\u5f0fsocket\u5728Client\u7a0b\u5e8f\u548cServer\u7a0b\u5e8f\u95f4\u5efa\u7acb\u901a\u4fe1\u7684\u901a\u9053\u3002\u6bcf\u4e2asocket\u53ef\u4ee5\u8fdb\u884c\u8bfb\u548c\u5199\u4e24\u79cd\u64cd\u4f5c\u3002\u5bf9\u4e8e\u4efb\u4e00\u7aef\uff0c\u4e0e\u5bf9\u65b9\u7684\u901a\u4fe1\u4f1a\u8bdd\u8fc7\u7a0b\u662f\uff1a
\n\u5efa\u7acbsocket\u8fde\u63a5\uff0c\u83b7\u5f97\u8f93\u5165\/\u8f93\u51fa\u6d41\uff0c\u8bfb\u6570\u636e\/\u5199\u6570\u636e\uff0c\u901a\u4fe1\u5b8c\u6210\u540e\u5173\u95edsocket\uff08\u62c6\u9664\u8fde\u63a5\uff09\u3002<\/p>\n
\u5229\u7528socket\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u5ba2\u6237\u7aef\u5efa\u7acb\u5230\u670d\u52a1\u5668\u7684\u5957\u63a5\u5b57\u5bf9\u8c61\uff1a
\n\u00a0\u00a0\u00a0 Socket(String host,int port)\uff1ahost\u662f\u670d\u52a1\u5668\u7684IP\u5730\u5740\uff0cport\u662f\u7aef\u53e3\u53f7\uff0c\u8fd9\u4e9b\u662f\u9884\u5148\u7ea6\u5b9a\u7684\u3002
\n\u4f8b\u5982\uff0c\u4ee3\u7801\uff1a
\n\u00a0\u00a0\u00a0[java] try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Socket mySocket = new Socket(\u201chttp:\/\/www.warmtel.com\u201d ,1860);
\n\u00a0\u00a0\u00a0 }catch(IOException e){}[\/java]
\n\u7136\u540e\uff0c\u7528getInputStream()\u65b9\u6cd5\u83b7\u5f97\u8f93\u5165\u6d41\uff0c\u7528\u8fd9\u4e2a\u8f93\u5165\u6d41\u8bfb\u53d6\u670d\u52a1\u5668\u653e\u5165\u201c\u7ebf\u8def\u201d\u7684\u4fe1\u606f\uff1b\u7528getOutputStream()\u65b9\u6cd5\u83b7\u5f97\u8f93\u51fa\u6d41\uff0c\u7528\u8fd9\u4e2a\u8f93\u51fa\u6d41\u5c06\u4fe1\u606f\u5199\u5165\u201c\u7ebf\u8def\u201d\u3002<\/p>\n
\u5229\u7528ServerSocket\u7684\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u5728\u670d\u52a1\u5668\u5efa\u7acb\u63a5\u53d7\u5ba2\u6237\u5957\u63a5\u5b57\u7684\u670d\u52a1\u5668\u5957\u63a5\u5b57\u5bf9\u8c61\uff1a
\n\u00a0\u00a0\u00a0 ServerSocket(int port)\uff1a\u6307\u5b9a\u7aef\u53e3\u53f7\uff0c\u521b\u5efa\u4e00\u4e2aServerSocket\u5bf9\u8c61\u3002\u7aef\u53e3\u53f7port\u8981\u4e0e\u5ba2\u6237\u547c\u53eb\u7684\u7aef\u53e3\u53f7\u76f8\u540c\u3002\u4e3a\u6b64\uff0c\u7528\u4ee5\u4e0b\u5f62\u5f0f\u4ee3\u7801\uff1a
\n\u00a0\u00a0\u00a0[java] try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ServerSocket serverSocket = new ServerSocket(1860);
\n\u00a0\u00a0\u00a0 }catch(IOException e){}[\/java]
\n\u670d\u52a1\u5668\u7aef\u7a0b\u5e8f\u5728\u6307\u5b9a\u7684\u7aef\u53e3\u76d1\u542c\uff0c\u5f53\u6536\u5230Client\u7a0b\u5e8f\u53d1\u51fa\u7684\u670d\u52a1\u8bf7\u6c42\u65f6\uff0c\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u5bf9\u8c61\u4e0e\u8be5\u7aef\u53e3\u5bf9\u5e94\u7684Client\u7a0b\u5e8f\u901a\u4fe1\u3002\u4f8b\u5982\uff0c\u6267\u884c\u4e0a\u8ff0\u5efa\u7acb\u670d\u52a1\u5668\u5957\u63a5\u5b57\u5bf9\u8c61\u7684\u4ee3\u7801\uff0c\u786e\u7acb\u4e86\u5bf9\u8c61serverSocket\u540e\uff0c\u5c31\u53ef\u80fd\u5b83\u4f7f\u7528accept()\u65b9\u6cd5\uff0c\u5f97\u5230Socket\u5bf9\u8c61\uff0c\u63a5\u6536Client\u7a0b\u5e8f\u6765\u81ea\u5957\u63a5\u5b57mySocket\u7684\u4fe1\u606f\u3002\u5982\u4ee5\u4e0b\u4ee3\u7801\u6240\u793a\uff1a
\n\u00a0\u00a0[java]\u00a0 try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Socket sc = serverSocket.accept();\/\/ac\u662f\u4e00\u4e2aSocket\u5bf9\u8c61
\n\u00a0\u00a0\u00a0 }catch(IOException e){}[\/java]
\n\u8981\u64a4\u9500\u670d\u52a1\uff0c\u53ef\u4ee5\u5173\u95edSocket\u5bf9\u8c61sc\uff1a
\n\u00a0\u00a0\u00a0[java] sc.close();[\/java]<\/p>\n
\u3010\u4f8b 13-3\u3011C\/S\u6a21\u5f0f\u4e2d\u7684Client\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u662f\u4e00\u4e2aClient\u7aef\u7684\u6d41\u5f0fSocket\u901a\u4fe1\u7684\u7b80\u5355\u5b9e\u4f8b\uff0c\u4ee3\u7801\u8bf4\u660eClient\u7aef\u7a0b\u5e8f\u7684\u7f16\u5199\u65b9\u6cd5\u3002\u4f8b\u4e2d\uff0cClient\u7a0b\u5e8f\u5411\u670d\u52a1\u5668\u4e3b\u673a\u7684\u7aef\u53e34441\u63d0\u51fa\u8bf7\u6c42\uff0c\u8fde\u63a5\u5efa\u7acb\u540e\u5b8c\u6210\u5bf9\u670d\u52a1\u5668\u7684\u8bfb\u5199\u3002
\n[java]import java.io.*;
\nimport java.net.*;
\npublic class Client{
\n\u00a0\u00a0\u00a0 public static void main(String args[]){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 String s = null;Socket mySocket;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DataInputStream in = null;DataOutputStream out = null;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 mySocket = new Socket(\u201clocalhost\u201d,4441);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 in = new DataInputStream(mySocket.getInputStream());
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 out = new DataOutputStream(mySocket.getOutputStream());
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 out.writeUTF(\u201cgood server!\u201d);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 while(true){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 s = in.readUTF();
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if(s==null)
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0break;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(s);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 mySocket.close();
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }catch(IOException e){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 System.out.println(\u201ccan\u2019t connect\u201d);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0 }
\n}[\/java]<\/p>\n
\u3010\u4f8b 13-4\u3011\u4e0e\u4f8b10.3 Client\u7aef\u5e94\u7528\u7a0b\u5e8f\u5bf9\u5e94\u7684Server\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\u7a0b\u5e8f\u57284441\u7aef\u53e3\u76d1\u542c\uff0c\u5f53\u68c0\u6d4b\u5230\u6709\u5ba2\u6237\u673a\u8bf7\u6c42\u65f6\uff0c\u4ea7\u751f\u4e00\u4e2a\u5185\u4e3a\u201c\u5ba2\u6237\uff0c\u4f60\u597d\uff0c\u6211\u662f\u670d\u52a1\u5668\u201d\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u5230\u5ba2\u6237\u7aef\u3002
\n[java]import java.io.*;import java.net.*;
\npublic class Server{
\n\u00a0\u00a0\u00a0 public static void main(String args[]){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ServerSocket server = null;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Socket you = null;String s = null;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DataOutputStream out = null;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DataInputStream in = null;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 server = new ServerSocket(4441);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }catch(IOException e1){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 system.out.println(\u201cERROR:\u201d +e1);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 try{
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 you = server.accept();
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 in = new DataInputStream(you.getInputStream());
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 out = new DataOutputStream(you. getOutputStream());
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 while(true){
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 s = in.readUTF();
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if(s!=null) break;
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 out.writeUTF(\u201c\u5ba2\u6237\uff0c\u4f60\u597d\uff0c\u6211\u662f\u670d\u52a1\u5668\u201d);
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 out.close();
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 catch(IOException e){System.out.println(\u201cERROR:\u201d+e);}
\n\u00a0\u00a0\u00a0 }
\n}[\/java]
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