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java socket 实现服务端与客户端------一对多的服务端和客户机

上一篇 / 下一篇 2009-04-28 17:16:19 / 个人分类：JAVA学习&编程相关

//一对多的服务端和客户机：一个服务端能同时服务多个客户端，需要使用多线程来实现

//服务端：调用具体的处理线程完成处理
package com.socket.multiserver;
import java.io.*;
import java.net.*;
import com.socket.multiserver.ChildTh;

public class MyMultiServer {
public static void main(String[] args) throws IOException{
ServerSocket server=new ServerSocket(5678);
while (true){
                Socket client=server.accept();
                ChildTh child=new ChildTh(client);//用socket实例初始化具体的处理线程对象
                //使用Runnable接口和使用extends Thread的区别：
                // 如果是使用Runnable接口，需要这么写：
                   new Thread(child).start();
                //注意：不能写成：child.run();
                // 如果使用extends Thread，只需要child.start()就可以，因为start()是Thread的方法
                }
        }
}

============================================================

//处理线程类：
package com.socket.multiserver;
import java.io.*;
import java.net.*;

public class ChildTh implements Runnable{
        private Socket client;
        public ChildTh(Socket client){
                this.client=client;
        }

        public void run(){
           try{
             BufferedReader in=new BufferedReader(new InputStreamReader(client.getInputStream()));
             PrintWriter ut=new PrintWriter(client.getOutputStream());
             while(true){
                     String str=in.readLine();
                     System.out.println(str);
                     out.println("has receive....");
                     out.flush();
                     if(str.equals("end"))
                        break;
             }

             client.close();
            }catch(Exception e){
                  System.out.println("error in the close the socket!");
                  e.printStackTrace();
              }
              finally{

              }
        }

}

===========================================================

//客户端
package com.socket.multiserver;
import java.net.*;
import java.io.*;

public class MyMultiClient{
static Socket client;

public static void main(String[] args)throws Exception{

client=new Socket(InetAddress.getLocalHost(),5678);

         BufferedReader in=new BufferedReader(new InputStreamReader(client.getInputStream()));
         PrintWriter ut=new PrintWriter(client.getOutputStream());

         //从标准输入接收数据
BufferedReader wt=new BufferedReader(new InputStreamReader(System.in));

while(true){
           String str=wt.readLine();
           //String str = "jonathan";
           out.println(str);
           out.flush();
           if(str.equals("end")){
                    break;
          }
           System.out.println(in.readLine());
}
client.close();
}
}