Java udp协议进行传输数据

public class Send {

public static void main(String[] args) throws IOException {
DatagramSocket ds=new DatagramSocket();
String s="你好，这里是客户端的数据";
byte[] buf=s.getBytes();
InetAddress address=InetAddress.getByName("192.168.13.42");
DatagramPacket dp=new DatagramPacket(buf, buf.length, address, 10086);
ds.send(dp);
ds.close();
}

}

package www.cn.ft;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
/**
* udp编程
* 服务端
* @author Administrator
*
*/

public class Recive {

public static void main(String[] args) throws IOException {
while(true) {
DatagramSocket ds=new DatagramSocket(10086);

byte[] buf=new byte[1024];
DatagramPacket dp=new DatagramPacket(buf, buf.length);

ds.receive(dp);

byte[] data = dp.getData();
int length = dp.getLength();

String message=new String(data,0,length);

InetAddress address = dp.getAddress();
String hostAddress = address.getHostAddress();

System.out.println("客户端发过来的数据是："+message+" "+"ip地址是："+hostAddress);
//  ds.close();
}
}

}