Java基础—socket—UDP---chatDemo

/**两个线程： * 一个线程控制发数据 * 另一个线程控制收数据 * */

package com.Train;



import java.io.BufferedReader;

import java.io.Console;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.net.SocketException;



/**两个线程：

 * 一个线程控制发数据

 * 另一个线程控制收数据

 * */



public class ChatDemo {



    public static void main(String[] args) {

        

        try {

            //建立socket

            DatagramSocket sendSok = new DatagramSocket(); 

            DatagramSocket recvSok = new DatagramSocket(10006);

            

            //建立两个类实现Runnable接口

            SendData sd = new SendData();

            RecvData rd = new RecvData();

            //将socket传入线程函数

            sd.sendD(sendSok);

            rd.recvD(recvSok);

            

            //线程开启

            Thread sendThread = new Thread(sd);

            Thread recvThread = new Thread(rd);

            sendThread.start();

            recvThread.start();

            

            

        } catch (SocketException e) { 

            throw new RuntimeException("main程序中错误");

        } 

    } 

} 



class SendData implements Runnable{

    private DatagramSocket ds = null;

    

    public void sendD(DatagramSocket argDs){

        this.ds = argDs;

    }

    public void run() { 

        try { 

            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

            String line = null; 

            while(null!=(line = br.readLine())){ 

                if("886".equals(line))break; 

                DatagramPacket dp = new DatagramPacket(line.getBytes(),line.getBytes().length, InetAddress.getByName("192.168.1.189"), 2000);

                

                this.ds.send(dp);    

            }

        } catch (IOException e) { 

            throw new RuntimeException("发送端错误");

        }  

        ds.close();    

        

    }

}



class RecvData implements Runnable{

    private DatagramSocket ds = null;

    

    public void recvD(DatagramSocket argDs){

        this.ds = argDs;

    }

    

    public void run() { 

        try { 

            while(true){ 

                byte [] bbuf = new byte [1024];

                DatagramPacket dp = new DatagramPacket(bbuf,bbuf.length); 

                

                 this.ds.receive(dp);

                  

                 System.out.println(dp.getAddress().getHostAddress()+":"+dp.getPort()+"\nreceive data: "+new String(dp.getData()));     

            }     

        } catch (Exception e) {

            throw new RuntimeException("接收端错误");

        } 

        

    }

}

<console>:

 

网络收发小工具（端口2000）：