java之UDP(datagramsocket,datagramPacket)实例

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.Socket;
import java.net.SocketException;
import java.net.UnknownHostException;

import org.junit.Test;

public class TestUDP {

@Test
public void send() throws Exception{
String str = "Hello";
DatagramPacket pack = new DatagramPacket(str.getBytes(),str.getBytes().length,InetAddress.getByName("127.0.0.1"),10000);

DatagramSocket scoket = new DatagramSocket();
for(int i =0; i< 10;i++){
scoket.send(pack);
}

scoket.close();
}

@Test
public void revice() throws Exception{

byte[] by = new byte[1024];

DatagramPacket pack = new DatagramPacket(by,by.length);

DatagramSocket scoket = new DatagramSocket(10000);
while(true){
scoket.receive(pack);

System.out.println(new String(pack.getData()));

}

}

}