java实现简单TCP聊天程序-创新互联

本文实例为大家分享了java实现TCP聊天程序的具体代码,供大家参考,具体内容如下

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服务端代码:

package com.test.server;
 
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
 
public class Server {
 
 public static void main(String[] args) {
 new Server().startServer();
 }
 
 public void startServer(){
 try {
  //服务器在9990端口监听客户端的连接
  ServerSocket ss = new ServerSocket(9999);
  System.out.println("server is listening...");
  while(true){
  //阻塞的accept方法,当一个客户端连接上,才会返回Socket对象
  Socket s = ss.accept();
  System.out.println("a client has connected!");
  //开启线程处理通信
  new CommunicateThread(s).start();
  }
 } catch (IOException e) {
  e.printStackTrace();
 }
 }
 
 public class CommunicateThread extends Thread{
 
 Socket socket;
 DataInputStream dis;
 DataOutputStream dos;
 
 public CommunicateThread(Socket socket){
  this.socket = socket;
  try {
  dis = new DataInputStream(socket.getInputStream());
  dos = new DataOutputStream(socket.getOutputStream());
  } catch (IOException e) {
  e.printStackTrace();
  }
 }
 
 @Override
 public void run() {
  super.run();
  //读取客户端发过来的消息
  String msg = null;
  try {
  while((msg = dis.readUTF()) != null){
   System.out.println("client send msg :" + msg);
   String replyMsg = "server reply : " + msg;
   dos.writeUTF(replyMsg);
   System.out.println("server reply msg :" + replyMsg);
  }
  } catch (IOException e) {
  e.printStackTrace();
  }
 }
 }
 
}

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