[网络协议]java UDP聊天实现

发送端

import java.net.InetSocketAddress;
import java.net.SocketException;

public class UdpReceiveDemo01 {
    public static void main(String[] args) throws Exception {
        DatagramSocket socket = new DatagramSocket(8888);

        //准备数据: 控制台读取 System.in
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        while (true){
            String data = reader.readLine();
            byte[] bytes = data.getBytes();
            DatagramPacket packet = new DatagramPacket(bytes,0,bytes.length,new InetSocketAddress("localhost",6666));

            socket.send(packet);

            if (data.equals("bye")){
                break;
            }
        }

        socket.close();
    }
}

接收端

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;

public class UdpSenderDemo01 {
    public static void main(String[] args) throws Exception {
        DatagramSocket socket = new DatagramSocket(6666);

        while (true){
            //准备接收包裹
            byte[] container = new byte[1024];
            DatagramPacket packet = new DatagramPacket(container,0,container.length);

            //断开连接 bye
            byte[] data = packet.getData();
            String receiveData = new String(data, 0, packet.getLength());

            System.out.println(receiveData);
            if (receiveData.equals("bye")){
                break;
            }

            socket.receive(packet);
        }
        socket.close();
    }
}