java网络编程（二）多线程网络编程_java使用多线程做网络编程-优快云博客

本文介绍了一种基于Java实现的多线程网络通信方案，服务端能够同时处理多个客户端的连接请求，每个客户端连接都会被分配到独立的线程进行处理。

通过上面第一章的程序可以看出来，针对服务端只能连接一个客户端，如果有另外一台机器连接主机就会出现错误，连接不上，主要是因为第一章的代码是单线程的，也就是是单对单的服务，服务端server接收到一个client请求后,后面的client请求就无法连接上主机了

下面是多线程的网络通信服务端代码:

package com.sun.net;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class ManyThreadSocketServer {
     private int port = 10000;
     
     private ServerSocket server;
     
     public ManyThreadSocketServer() throws IOException{
            server = new ServerSocket( port);
     }
     
     public void talk() throws IOException{
            while( true){
                Socket socket = server.accept();
                invoke(socket);
           }
     }
     public void invoke(final Socket socket){
            new Thread( new Runnable() {
                 @Override
                 public void run() {
                      try {
                           BufferedReader br = getReader(socket);
                           PrintWriter pw = getWriter(socket);
                           
                           String msg = null;
                            while( true){
                                msg = br.readLine();
                                System. err.println(msg);
                                
                                pw.println( "server:" + msg);
                                pw.flush();
                                
                                 if(msg.equals( "bye")){
                                      break;
                                }
                           }
//                         socket.close();
//                         if( br != null){
//                              br.close();
//                         }
//                         if( pw != null){
//                              pw.close();
//                         }
                     } catch (Exception e) {
                           e.printStackTrace();
                     }
                }
            }).start();
     }
     public BufferedReader getReader(Socket socket) throws Exception{
            return new BufferedReader( new InputStreamReader(socket.getInputStream()));
     }
     public PrintWriter getWriter(Socket socket) throws Exception{
            return new PrintWriter(socket.getOutputStream());
     }
     public static void main(String[] args) throws Exception {
            new ManyThreadSocketServer().talk();
     }
}

客户端代:通过获取系统输入向服务端发送数据信息

package com.sun.net;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

public class ManyThreadSocketClient {

private String serverIp;

private int port;

private Socket socket ;

public ManyThreadSocketClient() {

serverIp = "192.168.1.103";