Java代码

1. import java.io.InputStream;
2. import java.net.DatagramPacket;
3. import java.net.DatagramSocket;
4. import java.util.Properties;
5.  
6. public class UdpClientSocket {
7.  
8. public static void main(String[] args) throws Exception {
9.  
10. InputStream in =UdpClientSocket.class.getResourceAsStream("/config/udpConfig.properties");
11. Properties properties = new Properties();
12. properties.load(in);
13.  
14. int listenPort = Integer.parseInt(properties.getProperty("listenPort"));
15. int maxPacketsLength = Integer.parseInt(properties.getProperty("maxPacketsLength"));
16.  
17. while (true) {
18. DatagramSocket ds = new DatagramSocket(listenPort);
19. byte[] buf = new byte[maxPacketsLength];
20. DatagramPacket dp = new DatagramPacket(buf, maxPacketsLength);
21. // dp.getData();
22. // System.out.println(dp.getData());
23. ds.receive(dp);
24. System.out.println(new String(buf, 0, dp.getLength()));
25. ds.close();
26. }
27. }
28. }