Java网络编程(UDP协议-聊天程序)

接收端：

package WebProgramingDemo;

import java.net.DatagramPacket;
import java.net.DatagramSocket;

public class CharReceivePart implements Runnable{

    private DatagramSocket ds;
    public CharReceivePart(DatagramSocket ds) {
        this.ds=ds;
    }
    @Override
    public void run() {
        try{
        while(true){
            byte[] buf=new byte[1024];
            DatagramPacket dp1=new DatagramPacket(buf, buf.length);
            ds.receive(dp1);
            String ip=dp1.getAddress().getHostAddress();
            int port=dp1.getPort();
            String text=new String(dp1.getData(),0,dp1.getLength());
            System.out.println(ip+"::"+port+"::"+text);
        }
        }catch(Exception e){
            
        }
    }

    

}

发送端：

package WebProgramingDemo;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class ChartSendPart implements Runnable {

    DatagramSocket ds2;
    public ChartSendPart(DatagramSocket ds2) {
        this.ds2=ds2;
    }
    @Override
    public void run() {
        try{
        BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));
        String line=null;
        while((line=bufr.readLine())!=null){
            byte buf[]=new byte[1024];
            DatagramPacket dp2=new DatagramPacket(buf, buf.length,InetAddress.getByName("192.168.2.255"),10001);
            ds2.send(dp2);
        }
        }catch(Exception e){
            
        }
    }

    

}

主类：

package WebProgramingDemo;

import java.io.IOException;
import java.net.DatagramSocket;

public class ChartDamo {

    /**
     * @param args
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {

        DatagramSocket send=new DatagramSocket();
        DatagramSocket receive=new DatagramSocket(10001);
        new Thread(new ChartSendPart(send)).start();
        new Thread(new CharReceivePart(receive)).start();
    }

}