UDPSocket發送和接收消息

package com.xjh.demo.socket.udp;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class ChatRoom {

    public static void main(String[] args) throws Exception {
        DatagramSocket ds = new DatagramSocket();
        DatagramSocket dr = new DatagramSocket(12306);
        SendPro sendPro=new SendPro(ds);
        RecPro recPro=new RecPro(dr);
        new Thread(sendPro).start();
        new Thread(recPro).start();
    }
}


class SendPro implements Runnable {
    DatagramSocket datagramSocket;

    public SendPro(DatagramSocket datagramSocket){
        this.datagramSocket=datagramSocket;
    }
    @Override
    public void run() {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        String line = null;
        try {
            while ((line = bufferedReader.readLine()) != null) {
                if ("886".equals(line)) {
                    break;
                }
                byte[] bytes = line.getBytes();
                InetAddress inetAddress = InetAddress.getByName("127.0.0.1");
                int port = 12306;
                DatagramPacket dataPacket = new DatagramPacket(bytes, bytes.length, inetAddress, port);
                datagramSocket.send(dataPacket);
            }
        } catch (Exception e) {

        }

    }
}

class RecPro implements Runnable {
    DatagramSocket datagramSocket;

    public RecPro(DatagramSocket datagramSocket) {
        this.datagramSocket = datagramSocket;
    }

    @Override
    public void run() {
        while (true) {
            byte[] bytes = new byte[1024];
            int length = bytes.length;
            DatagramPacket datagramPacket = new DatagramPacket(bytes, length);
            try {
                datagramSocket.receive(datagramPacket);
                String result = new String(datagramPacket.getData(), 0, datagramPacket.getLength());
                System.out.println("recieve message:" + result);
            } catch (Exception e) {

            }

        }
    }
}