Java Socket 聊天室

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

public class SocketServer{

    static List<Socket> socketList = new ArrayList<Socket>();


    public static void main(String[] args) {
        int port = 55533;
        ServerSocket server = null;
        try {
            server = new ServerSocket(port);
            System.out.println("服務器開啓");
            while (true) {
                Socket socket = server.accept();
                socketList.add(socket);
                System.out.println("連接客戶端數目：" + socketList.size());
                new Thread(new DispatcherMessage(socket, socketList)).start();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

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

public class WriteDataToServer implements Runnable {

    private Socket clientSocket;

    public WriteDataToServer(Socket clientSocket) {
        this.clientSocket = clientSocket;
    }

    public void run() {
        try {
            OutputStream out = clientSocket.getOutputStream();
            OutputStreamWriter writer = new OutputStreamWriter(out);
            Scanner scanner = new Scanner(System.in);
            System.out.println("請輸入需求——————  ");
            while (true) {
                String data = scanner.nextLine();
                writer.write(data+"\n");
                writer.flush();
                if(data.equals("bye")){
                    break;
                }
            }
            clientSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {

    }
}

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

public class SocketClient {

    // 要連接的服務端IP地址和端口
    String host = "127.0.0.1";
    int port = 55533;

    public static void main(String[] args) {
        try {
            Socket socket = new Socket("127.0.0.1", 55533);
            System.out.println("客戶端啓動");
            new Thread(new WriteDataToServer(socket)).start();
            new Thread(new ReadDataFromServer(socket)).start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;

public class ReadDataFromServer implements Runnable {

    private Socket clientSocket;

    public ReadDataFromServer(Socket clientSocket) {
        this.clientSocket = clientSocket;
    }

    public void run() {
        try {
            BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
            String message = in.readLine();
            System.out.println("來自服務器的消息:" + message);
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

import java.io.*;
import java.net.Socket;
import java.util.List;


public class DispatcherMessage implements Runnable {

    private Socket clientSocket = null;
    private List<Socket> socketlist = null;
    private BufferedReader br = null;

    public DispatcherMessage(Socket clientSocket, List<Socket> socketlist) {
        this.clientSocket = clientSocket;
        this.socketlist = socketlist;
        try {
            br = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void run() {
        while (true) {
            String test = null;
            String result = null;
            try {
                while((test = br.readLine()) != null){
                    System.out.println("服務端接收到客戶端發送的信息" + test);
                    for(Socket socket : socketlist){
                        if(!clientSocket.equals(socket)){
                            result = test;
                            System.out.println(result+"服務器接受端測試");
                            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
                            bw.write(result);
                            bw.newLine();
                            bw.flush();
                        }
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}