java - 登录按钮在 Java 应用程序中没有可见效果

Question

我有两个应用程序，一个是服务器，另一个是客户端。首先，我运行我的服务器应用程序。然后我将运行客户端应用程序。运行客户端应用程序时，将显示一个窗口提示输入用户名和密码，如果正确，将显示另一个窗口。当我单击“登录”按钮时，没有任何反应。怎么了？

服务器应用程序中的主类:

 public static void main(String[] args) {
    System.out.println("Server is starting...");

    ServerSocket server = null;
    try {
        server = new ServerSocket(5000);
    } catch (IOException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    }

    System.out.println("Server is listening...");
    while (true) {
        try {
            Socket socket = server.accept();
        } catch (IOException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("Client Connected...");

    }
}

其中有一个套接字的客户端类:

private static InformationClass info = new InformationClass();
private static Socket c;
static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

/**
 * @param args the command line arguments
 */
public static void runAClient() {
    try {
        c = new Socket("localhost", 5000);
    } catch (UnknownHostException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    }
}
public static void clienT(){
    try {
        BufferedReader read = new BufferedReader(new InputStreamReader(c.getInputStream()));
        BufferedWriter write = new BufferedWriter(new OutputStreamWriter(c.getOutputStream()));
        while (true) {
            String string = reader.readLine();
            write.write(string, 0, string.length());
            write.newLine();

            write.flush();
            System.out.println(read.readLine());
        }

    } catch (Exception e) {
        System.err.println(e);
    }
}

public static boolean connected() {
    boolean bool = false;
    if (c.isConnected()) {
        info.setSituation("Connected");
        bool = true;
    } else {
        info.setSituation("disconnected");
        bool = false;
    }
    return bool;
}

客户端应用程序中的主窗口，当我运行服务器应用程序时启动该窗口。其中一部分用于“登录”按钮。

private void submit() {
    String id = idField.getText();
    char[] pass1 = passField.getPassword();
    String pass = new String(pass1);
    if (id.equals("") || pass.equals("")) {
        ErrorFrame frame = new ErrorFrame();
        frame.setVisible(true);
    } else {
        boolean b = Manager.Test(id, pass);
        if (b == true) {
            Main.runAClient();
            boolean boOl = Main.connected();
            if(boOl==true){
                this.setVisible(false);
                ListFrame fRAme = new ListFrame(client);
                fRAme.setVisible(true);
            }
            else{
                JOptionPane.showConfirmDialog(this, "You couldn't connect successfully,please try again!","sign_In Problem",JOptionPane.ERROR_MESSAGE);
                return;
            }
        } else {
            JOptionPane.showConfirmDialog(this, "You have entered wrong datas,try it again");
            return;
        }
    }
}

Answer 1

您是否尝试过使用调试器单步执行代码以准确找出哪一行代码无法正常工作？简单地说当您单击登录按钮时“没有发生任何事情”并没有给我们带来太多帮助。