1 /**
2 * 发送方
3 */
4 public class DataGramSender {
5
6 public static void main(String[] args) {
7 try {
8 //9999向外发的端口号
9 DatagramSocket socket = new DatagramSocket(9999);
10 int i=1;
11 while(true){
12 String content="Tom"+i;
13 byte[] buf=content.getBytes();
14 //创建数据报表
15 DatagramPacket packet = new DatagramPacket(buf, buf.length);
16 //设置包要发送的地址和端口号
17 packet.setAddress(InetAddress.getByName("localhost"));
18 packet.setPort(8888);
19 socket.send(packet);
20 System.out.println("sent"+content);
21 Thread.sleep(1000);
22 i++;
23 }
24 } catch (Exception e) {
25 // TODO Auto-generated catch block
26 e.printStackTrace();
27 }
28 }
29 }
30
31
32 /**
33 * 接收方
34 *
35 */
36 public class DataGramRece {
37 public static void main(String[] args) {
38 try {
39 //创建数据报套接字
40 DatagramSocket socket = new DatagramSocket(8888);
41 byte[] buf=new byte[1024*64];
42 DatagramPacket packet = new DatagramPacket(buf, buf.length);
43 while(true){
44 socket.receive(packet);
45 //得到收到的数据长度
46 int len=packet.getLength();
47 System.out.println(new String(buf,0,len));
48 }
49 } catch (Exception e) {
50 // TODO Auto-generated catch block
51 e.printStackTrace();
52 }
53 }
54 }
