udpserver.java

来自「自己编写的Java学习代码」· Java 代码 · 共 31 行

import java.net.*;
import java.util.*;
public class UDPServer
{
	public static void main(String args[])throws Exception{
		byte buf[] = new byte[256];
		DatagramSocket socket = new DatagramSocket(8000);
		//构建接收数据报
		DatagramPacket packet = new DatagramPacket(buf,buf.length);
		//接收
		socket.receive(packet);
		//显示接收数据
		String msg = new String(packet.getData());
		System.out.println("Msg:"+msg.trim());
		//获得当前时间
		String date = new Date().toLocaleString();
		buf = date.getBytes();
		
		//构建发送数据报
		InetAddress address = packet.getAddress();
		int port = packet.getPort();
		packet = new DatagramPacket(buf,buf.length,address,port);
		//显示Client Address,port
		System.out.println("Address:"+address);
		System.out.println("Port:"+port);
		//发送
		socket.send(packet);
		socket.close();

	}
}