使用socket实现服务器客户端即时通讯的小例子

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服务器端

package com.huaqin.test;import java.io.BufferedReader;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import java.util.Scanner;public class ClientTest {public static void main(String[] args) {try {ServerSocket s = new ServerSocket(2536);Socket incoming = s.accept();System.out.println("incoming come ");BufferedReader in = new BufferedReader(new InputStreamReader(incoming.getInputStream()));PrintWriter out = new PrintWriter(incoming.getOutputStream(), true);out.println("Hello! Enter BYE to exit.");boolean done = false;Scanner scanner = new Scanner(System.in);System.out.println("***********begin************");while (!done) {String line = in.readLine();System.out.println("来信：" + line);String str = scanner.next();if (line == null) {done = true;} else {out.println(str);if (line.trim().equals("BYE")) {done = true;}}}incoming.close();} catch (Exception e) {System.out.println(e);}}}

客户端

package com.java.test;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.InetAddress;import java.net.Socket;import java.util.Scanner;public class Client {     public static void main(String args[]) {         try {                  Socket connection;                   connection = new Socket("192.168.126.68", 2536);               BufferedReader input = new BufferedReader(new InputStreamReader(                     connection.getInputStream()));             PrintWriter out = new PrintWriter(connection.getOutputStream(),true );             String info;             Scanner ss=new Scanner(System.in);                          while (true) {              info = input.readLine();          System.out.println("来信: "+info);                           String str=ss.next();                 out.println(str);                 System.out.println("发送:"+str);                       }             connection.close();         }         catch (SecurityException e) {             System.out.println("SecurityException when connecting Server!");         }         catch (IOException e) {             System.out.println("IOException when connecting Server!");         }     }}

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