Java多线程Socket在控制台输出的多人聊天室编程

服务器端代码

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

public class Server {

    private static ArrayList<Socket> list = new ArrayList<Socket>();
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(9999);
        while(true){
            Socket socket = server.accept();
            list.add(socket);
            new ServerThread(socket,list).start();;
        }
        
    }
    
    
    
}

客户端代码

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {

    public static void main(String[] args) throws UnknownHostException, IOException {
        Socket socket = new Socket("127.0.0.1",9999);
        new ThreadWriter(socket).start();
        new ThreadReader(socket).start();
    }
    
}

服务器处理socket的多线程

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.ArrayList;

public class ServerThread extends Thread {

    Socket socket;
    ArrayList<Socket> list;
    InputStream is;
    OutputStream os;
    public ServerThread(Socket socket, ArrayList<Socket> list) {
        this.socket = socket;
        this.list = list;
    }

    @Override
    public void run() {
        try {
            while(true){
                is = socket.getInputStream();
                byte[] b = new byte[1024];
                int len = is.read(b);
                String str = new String(b,0,len);
                System.out.println(str);
                for(Socket socket:list){
                    os = socket.getOutputStream();
                    os.write(str.getBytes());
                }
            }
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

读取客户端输入流多线程代码

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

public class ThreadReader extends Thread {

    Socket socket;
    public ThreadReader(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        try {
            while(true){
                
                InputStream is = socket.getInputStream();
                byte[] b = new byte[1024];
                int len = is.read(b);
                String str = new String(b,0,len);
                System.out.println(str);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

客户端发送数据多线程代码

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

public class ThreadWriter extends Thread {

    Socket socket;
    public ThreadWriter(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        try {
            Scanner sc = new Scanner(System.in);
            while(true){
                String str = sc.next();
                OutputStream os = socket.getOutputStream();
                os.write(str.getBytes());
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}