| server端：package gxltest;/*** Created by Administrator on 2016/12/2.*/import java.net.DatagramPacket;import java.net.DatagramSocket;public class UDPServer {public static void main(String[] args) throws Exception{DatagramSocket datagramSocket=new DatagramSocket(8088);while(true){DatagramPacket packet=new DatagramPacket(new byte[512], 512);datagramSocket.receive(packet);String msg=new String(packet.getData(), 0, packet.getLength());System.out.PRintln(packet.getAddress()+"/"+packet.getPort()+":"+msg);packet.setData("I am server!!!".getBytes());datagramSocket.send(packet);}}}client端：package gxltest;/*** Created by Administrator on 2016/12/2.*/import java.io.BufferedReader;import java.io.InputStreamReader;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;public class UDPClient {public static void main(String[] args) throws Exception {BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));DatagramSocket datagramSocket=new DatagramSocket();InetAddress address=InetAddress.getByName("GXL");String msg="654";while((msg=reader.readLine())!=""){//發送數據byte[] buffer=msg.getBytes();DatagramPacket packet=new DatagramPacket(buffer, buffer.length, address, 8088);datagramSocket.send(packet);//接收數據DatagramPacket inputPacket = new DatagramPacket(new byte[512], 512);datagramSocket.receive(inputPacket);System.out.println(new String(inputPacket.getData(), 0 , inputPacket.getLength()));datagramSocket.close();}}} |
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