- package net.java2000.net;
- import java.io.IOException;
- import java.net.DatagramPacket;
- import java.net.DatagramSocket;
- import java.net.InetAddress;
- import java.net.SocketException;
- /**
- * 使用DatagramPacket和DatagramSocket发送和读取数据。
- *
- * @author 赵学庆，Java世纪网(java2000.net)
- *
- */
- public class DatagramPacketReceiver {
- public static void main(String[] args) {
- try {
- new DatagramPacketReceiver.DatagramPacketSender().start();
- byte[] inbuf = new byte[256]; // 默认的数据缓冲大小
- DatagramSocket socket = new DatagramSocket(8888);
- // 等待数据
- DatagramPacket packet = new DatagramPacket(inbuf, inbuf.length);
- socket.receive(packet);
- int numBytesReceived = packet.getLength();
- System.out.println(new String(inbuf, 0, numBytesReceived, "UTF-8"));
- } catch (SocketException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- static class DatagramPacketSender extends Thread {
- public void run() {
- try {
- Thread.sleep(1000); // 休眠1秒，等待接收服务启动
- InetAddress ia = InetAddress.getByName("127.0.0.1");
- byte[] bs = "JAVA世纪网,java2000.net".getBytes("UTF-8");
- DatagramPacket request = new DatagramPacket(bs, bs.length, ia, 8888);
- DatagramSocket socket = new DatagramSocket();
- socket.send(request);
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- }
- }
运行结果
JAVA世纪网,java2000.net