socket进行简单聊天

简单聊天:UDP实现

发送端代码

package com.wangjie.chat;

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

public class UdpSenderDemo01 {
    public static void main(String[] args) throws Exception {

        DatagramSocket socket = new DatagramSocket(9999);

        // 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[] datas = data.getBytes();


            DatagramPacket packet = new DatagramPacket(datas, 0, datas.length, new InetSocketAddress("localhost", 6666));

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

        socket.close();

    }



}

发送端调用代码：

package com.wangjie.chat;

public class TalkStudent {

    public static void main(String[] args) {
        // 开启两个线程
        new Thread(new TalkSend(7777,"localhost",9899)).start();
        new Thread(new TalkReceive(8890,"老师")).start();


    }
}

接收端代码：

package com.wangjie.chat;

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

public class UdpReceiveDemo01 {
    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);
            socket.receive(packet); // 阻塞式接收包裹

            // 断开连接
            byte[] data = packet.getData();
            String receiveData = new String(data, 0, data.length);
            System.out.println(receiveData);

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

接收端调用代码：

package com.wangjie.chat;

public class TalkTeacher {

    public static void main(String[] args) {
        new Thread(new TalkSend(5555,"localhost",8890)).start();
        new Thread(new TalkReceive(9899,"学生")).start();
    }
}