Java网络编程TCP多线程实现服务端接受多个客户端的信息

服务线程

import java.io.DataInputStream;
import java.io.InputStream;
import java.net.Socket;

public class ServerReaderThread extends  Thread{
        private Socket socket;

        public ServerReaderThread(Socket socket){
                this.socket = socket;
        }
        @Override
        public void run(){
                try{
                        //使用数据输入流  读取 用户发过来的信息
                        //获取字节输入流
                        InputStream ipt = socket.getInputStream();
                        //把原始的字节输入流包装成数据输入流
                        DataInputStream dis =new DataInputStream(ipt);
                        while (true){
                             try{

                                     String rs = dis.readUTF();
                                     System.out.println(rs);
                                     System.out.println("------------------------");
                             }catch (Exception e){
                                     System.out.println(socket.getRemoteSocketAddress()+"下线...");
                                     break;
                             }
                        }
                }catch (Exception e){
                        e.printStackTrace();
                }
        }
}

服务端

import java.net.ServerSocket;
import java.net.Socket;

public class Server2 {
    public static void main(String[] args) throws  Exception{
        System.out.println("------------服务端启动--------------");
        //创建ServerSocket对象  为服务端注册端口
        ServerSocket socketServer =new ServerSocket(7777);
        while (true){
            //调用accept 方法等待客户端的链接请求
            Socket socket = socketServer.accept();
            System.out.println(socket.getRemoteSocketAddress()+"上线....");
            new ServerReaderThread(socket).start();
        }
    }
}

客户端

import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;

public class Client2 {
    public static void main(String[] args) throws  Exception {
        //创建一个socket 对象  并同时请求与服务端程序的链接
        Socket socket = new Socket("127.0.0.1",7777);
        //从socket管道中获取字节流 用来发数据给服务端
        OutputStream os = socket.getOutputStream();

        //把低级的字节输出流  换成数据输出流
        DataOutputStream dos =  new DataOutputStream(os);
        //开始写数据
        Scanner sc =new Scanner(System.in);
        while (true){
            System.out.println("user:");
            String msg =sc.nextLine();
            if("exit".equals(msg)){
                System.out.println("退出会话...");
                dos.close();
                //释放连接资源
                socket.close();
                break;
            }
            dos.writeUTF(msg);
            dos.flush();
        }
    }
}

效果