服务器与客户端通信

package com.woye;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

/**
 * @module:
 * @title: Test2
 * @description: TODO
 * @author: xbc
 * @date 2022年01月25日 9:33
 */
public class Test2 {
    public static void main(String[] args) {

    }
}

/**
 * 服务器端
 */
class Server {

    public static ArrayList<Socket> sockets = new ArrayList<>();

    public static void main(String[] args) throws IOException {
        Socket accept;
        PrintStream stream;

        ServerSocket socket = new ServerSocket(30000);
        while (true) {
            //不间断的接收客户端发来的请求
            accept = socket.accept();
            sockets.add(accept);
            new Thread(new ServerThread(accept)).start();
        }
    }
}

/**
 * 负责处理每个线程通信
 */
class ServerThread implements Runnable {
    Socket socket = null;
    BufferedReader reader = null;

    public ServerThread(Socket socket) throws IOException {
        this.socket = socket;
        //初始化对应的流
        reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    }

    private String readFromClient() {
        try {
            return reader.readLine();
        } catch (IOException e) {
            e.printStackTrace();
            Server.sockets.remove(socket);
        }
        return null;
    }

    @Override
    public void run() {
        String content = null;
        try {
            while ((content = readFromClient()) != null) {
                for (Socket socket1 : Server.sockets) {
                    PrintStream print = new PrintStream(socket1.getOutputStream());
                    print.println(content);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

/**
 * 客户端
 */
class Client {
    public static void main(String[] args) throws IOException {
        Socket socket = null;
        BufferedReader reader = null;
        try {
            socket = new Socket("127.0.0.1", 30000);
            new Thread(new ClientThread(socket)).start();
            PrintStream printStream = new PrintStream(socket.getOutputStream());
            String line=null;
            BufferedReader reader1 = new BufferedReader(new InputStreamReader(System.in));
            while ((line=reader1.readLine())!=null){
                printStream.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            socket.close();
        }
    }
}

class ClientThread implements Runnable{
    private Socket socket;
    BufferedReader reader;

    public ClientThread(Socket socket) throws IOException {
        this.socket=socket;
        reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
    }

    @Override
    public void run() {
        try {
            String content=null;
            while ((content=reader.readLine())!=null){
                System.out.println("content = " + content);
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}