Java多线程局域网聊天室的实现

address = InetAddress.getByName("192.168.43.86");

int port = 9998;
socket = new Socket(address,port);

class SuperSocket extends Socket implements Runnable

SuperSocket socket_1 = new SuperSocket(9999);
SuperSocket socket_2 = new SuperSocket(9998);
SuperSocket socket_3 = new SuperSocket(9997);
Thread s1 = new Thread(socket_1);
Thread s2 = new Thread(socket_2);
Thread s3 = new Thread(socket_3);

package TCP;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

public class TCPserver2 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        //实例化具有多线程功能的服务器专用socket类
        //需要传递端口号作为初始化变量
        SuperSocket socket_1 = new SuperSocket(9996);
        SuperSocket socket_2 = new SuperSocket(9998);
        SuperSocket socket_3 = new SuperSocket(9997);
        //建立三个子线程
        Thread s1 = new Thread(socket_1);
        Thread s2 = new Thread(socket_2);
        Thread s3 = new Thread(socket_3);
        try {
            while(true) {
            	//开启线程
                s1.start();
                s2.start();
                s3.start();
                if(scan.next()=="123"){
                //结束线程
                    break;
                }
            }
        } finally {
            try {
            //关闭套接字
                socket_1.close();
                socket_2.close();
                socket_3.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

class SuperSocket extends Socket implements Runnable{

    InputStream is;
    byte[] buffer;
    Socket socket=null;
    ServerSocket serverSocket=null;

    public SuperSocket(int port){
        try {
        //初始服务器型套接字
            serverSocket = new ServerSocket(port);
            buffer = new byte[1024];

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    @Override
    public void run() {
        try {
        	//等待端口连接
            socket = serverSocket.accept();
            //连接完成后创建输入流
            is = socket.getInputStream();
            //读取客户端传送信息
            int len = is.read(buffer);
            String str = new String(buffer, 0, len);
            System.out.println(str);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

package TCP;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class TCPclient {
    public static void main(String[] args) {
        InetAddress address=null;
        Socket socket=null;
        OutputStream os=null;
        String message=null;
        Scanner sca=null;
        try {
            //得到本机IP地址
            address = InetAddress.getByName("192.168.43.86");
            //规定端口号，建立套接字
            int port = 9998;
            socket = new Socket(address,port);
            //绑定套接字的输出流
            os = socket.getOutputStream();
            sca = new Scanner(System.in);
            while(true) {
                message = sca.next();
                //写入输出流，在局域网中传输
                os.write(message.getBytes());
            }

        } catch (UnknownHostException e) {
            e.printStackTrace();
        }catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
            //关闭端口号，关闭io流
                os.close();
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}