java socket编程——UDP通信

Client.java:

 

 

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.util.Scanner;

 

 

 

public class Client {

public static void main(String[] args){

try {

DatagramSocket s=new DatagramSocket(9001);

Boolean flag=true;

while(flag){

String str=InetAddress.getLocalHost()+new Scanner(System.in).nextLine();

byte[] buf=str.getBytes();

DatagramPacket dp=new DatagramPacket(buf, buf.length,InetAddress.getByName("192.168.1.255"), 9002);

s.send(dp);

}

s.close();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

---

Server.java:

import java.io.IOException;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

public class Server {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

try {

//创建一个支持的UDP类，使用端口9002

DatagramSocket s=new DatagramSocket(9002);

byte[] buf=new byte[1024000];

Boolean flag=true;

while(flag){

DatagramPacket dp=new DatagramPacket(buf,1024);

s.receive(dp);

System.out.println(new String(buf));

}

s.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}