Java网络编程DatagramPacket传数据

客户端

package CH05;

import java.net.InetAddress;

import java.net.DatagramPacket;

import java.net.MulticastSocket;

public class Client

{

public static void main(String [] arstring)

{

try

{

byte [] arb = new byte [] {'h','e','l','l','o'};

InetAddress inetAddress = InetAddress.getByName("230.0.0.1");

DatagramPacket datagramPacket = new DatagramPacket(arb, arb.length, inetAddress, 7777);

MulticastSocket multicastSocket = new MulticastSocket();

multicastSocket.send(datagramPacket);

}

catch (Exception exception)

{

exception.printStackTrace();

}

}

}

服务端

package CH05;

import java.net.InetAddress;

import java.net.DatagramPacket;

import java.net.MulticastSocket;

public class Server

{

public static void main(String [] arstring)

{

try

{

MulticastSocket multicastSocket = new MulticastSocket(7777);

InetAddress inetAddress = InetAddress.getByName("230.0.0.1");

multicastSocket.joinGroup(inetAddress);

while (true)

{

byte [] arb = new byte [100];

DatagramPacket datagramPacket = new DatagramPacket(arb, arb.length);

multicastSocket.receive(datagramPacket);

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

}

}

catch (Exception exception)

{

exception.printStackTrace();

}

}

}