Main class 不会自动创建客户端

Question

我正在创建一个顶级王牌游戏，我在其中创建了一个服务器和两个客户端。我有一个控制器 class，我想用它来控制游戏。当我运行控制器创建我的服务器时，但我必须运行客户端分开才能创建它们。

有没有一种方法可以在我运行控制器启动我的客户端和服务器时启动它？我是 java 中 client/server 的初学者，所以任何帮助都会很棒。

        public static void main(String[] args) throws ClassNotFoundException, IOException {

        //Empty card arrays for now while testing
        Cards[] Player1 = new Cards[2];
        Cards[] Player2 = new Cards[2];

        Server server = new Server();

        Client client = new Client(Player1, "Gary");
        Client client2 = new Client(Player2, "Jack");
    }
}



 public class Server {


    public Server() throws IOException, ClassNotFoundException{
        @SuppressWarnings("resource")
        ServerSocket serverSocket = new ServerSocket(3000);
        System.out.println("Connecting....");

        while(!serverSocket.isClosed()) {
            Socket socket = serverSocket.accept();
            System.out.println("Connected");
            ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
            //Reads my card object
            Cards card = (Cards)ois.readObject();

            JFrame frame = new JFrame();
            frame.setSize(600, 600);
            //Test
            JLabel imageLabel = new JLabel(card.image); 
            frame.add(imageLabel);
            frame.setVisible(true);
            System.out.println(card.name);
            ois.close();
            socket.close();         

        }
    }
}



 public class Client implements Serializable{   


    public Client(Cards[] hand, String string) throws IOException, ClassNotFoundException {
        Socket socket = new Socket("localhost", 3000);
        ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
        //This is a test to show my card object can be passed over the stream
        Cards card = new Cards(string, 9, 5, 3, 5,new ImageIcon("C:\Users\gary.kelly\Pictures\Cards\John Snow.jpg"));  
        oos.writeObject(card);   
        oos.close();
        socket.close();       
    }   
}

Answer 1

您的程序现在是单线程的，服务器的 accept 方法阻塞了主线程，因此客户端无法连接。您可以在不同的线程中启动服务器和客户端，以便运行它们在一个 java 进程中一起运行。

    new Thread(() -> new Server()).start();
    new Thread(() -> new Client(Player1, "Gary")).start();
    new Thread(() -> new Client(Player2, "Jack")).start();

Main class 不会自动创建客户端

Main class will not create client's automatically

java

sockets

client

server