【Java】学习路径60-利用TCP协议接收多个客户端的数据

import java.io.IOException;
import java.net.*;

public class TCP_Server {
    public static void main(String[] args) {
        new ConnectionThread().start();
    }
}

class ConnectionThread extends Thread {
    @Override
    public void run() {
        try {
            ServerSocket ss = new ServerSocket(8989);

            while(true){
                Socket s = ss.accept();
                System.out.println("接收到一个用户的连接" + s.getInetAddress());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

目前，这个服务器端没有处理客户端发送的数据的功能，我们需要利用多线程接收处理客户端的数据。

构建一个线程类，构造方法中把Socket对象传递过来。

import java.io.IOException;
import java.io.InputStream;
import java.net.*;

public class TCP_Server {
    public static void main(String[] args) {
        new ConnectionThread().start();
    }
}

class ConnectionThread extends Thread {
    @Override
    public void run() {
        try {
            ServerSocket ss = new ServerSocket(8989);

            while(true){
                Socket s = ss.accept();
                System.out.println("接收到一个用户的连接" + s.getInetAddress());
                new ServerThread(s).start();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class ServerThread extends Thread {
    public ServerThread(Socket s){
        this.s=s;
    }
    private Socket s =null;
    @Override
    public void run() {

        try {
            InputStream ips = s.getInputStream();
            byte[] buf = new byte[1024];
            int length = -1;
            System.out.println("-------------------------------");
            System.out.println("来自"+s.getInetAddress()+"客户端的连接");
            while((length = ips.read(buf))>-1)
                System.out.println(new String(buf,0,length));
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}