Java基础学习（十五）

//UDP接收方
package com.Rui.Study.demo08;

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

/**
 * Create by Administrator
 * Data 2021/12/27 18:31
 * Description
 **/
public class TalkRecive implements Runnable{

    DatagramSocket socket = null;
    private int port;
    private String msgForm;

    public TalkRecive(int port,String msgForm) {
        this.port = port;
        this.msgForm = msgForm;
        try {
            socket = new DatagramSocket(port);
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
        while (true) {
            try {

                //准备接受包裹
                byte[] container = new byte[1024];
                DatagramPacket datagramPacket = new DatagramPacket(container, 0, container.length);
                socket.receive(datagramPacket);

                //断开链接
                byte[] data = datagramPacket.getData();
                String receiveData = new String(data, 0, data.length);

                System.out.println(msgForm + ": " + receiveData);

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

            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        socket.close();
    }
}

//UDP发送方
package com.Rui.Study.demo08;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketException;

/**
 * Create by Administrator
 * Data 2021/12/27 17:57
 * Description
 **/
public class TalkSend implements Runnable{
    DatagramSocket socket = null;
    BufferedReader reader = null;

    private int Formprot;
    private String toIp;
    private int toPort;

    public TalkSend(int Formport, String toIp, int toPort) {
        this.Formprot = Formport;
        this.toIp = toIp;
        this.toPort = toPort;

        try {
            socket = new DatagramSocket(Formport);
            reader = new BufferedReader(new InputStreamReader(System.in));
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void run() {

        //准备数据：读取控制台System.in

        while (true) {
            try {
                String data = reader.readLine();
                byte[] bytes = data.getBytes();//转为数据
                DatagramPacket datagramPacket = new DatagramPacket(bytes, 0, bytes.length, new InetSocketAddress(this.toIp, this.toPort));
                socket.send(datagramPacket);
                if (data.equals("bye")) {
                    break;
                }
            }catch (IOException e){
                e.printStackTrace();
            }

        }
        socket.close();
    }
}


public class TalkStudent {
    public static void main(String[] args) {
        //开启两个线程，既可能是接收方，也可能是发送方
        new Thread(new TalkSend(7777,"localhost",9999)).start();
        new Thread(new TalkRecive(8888,"老师")).start();
    }
}

//多线程聊天室，通过实现runable接口实现
public class TalkTeacher {
    public static void main(String[] args) {
        new Thread(new TalkSend(5555,"localhost",8888)).start();
        new Thread(new TalkRecive(9999,"学生")).start();
    }
}