javafx登录注册页面

以下是一个简单的JavaFX登录注册页面的示例代码：

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class LoginRegistrationPage extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.setTitle("Login / Registration Page");

        // Create a GridPane layout
        GridPane grid = new GridPane();
        grid.setAlignment(Pos.CENTER);
        grid.setHgap(10);
        grid.setVgap(10);
        grid.setPadding(new Insets(25, 25, 25, 25));

        // Add a Text node
        Text scenetitle = new Text("Welcome");
        scenetitle.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));
        grid.add(scenetitle, 0, 0, 2, 1);

        // Add a Label and TextField for username
        Label userName = new Label("User Name:");
        grid.add(userName, 0, 1);
        TextField userTextField = new TextField();
        grid.add(userTextField, 1, 1);

        // Add a Label and PasswordField for password
        Label pw = new Label("Password:");
        grid.add(pw, 0, 2);
        PasswordField pwBox = new PasswordField();
        grid.add(pwBox, 1, 2);

        // Add a login Button
        Button btn = new Button("Login");
        HBox hbBtn = new HBox(10);
        hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
        hbBtn.getChildren().add(btn);
        grid.add(hbBtn, 1, 4);

        // Add a registration Button
        Button registrationBtn = new Button("Register");
        HBox registrationHbBtn = new HBox(10);
        registrationHbBtn.setAlignment(Pos.BOTTOM_RIGHT);
        registrationHbBtn.getChildren().add(registrationBtn);
        grid.add(registrationHbBtn, 1, 5);

        // Add a message Text node
        final Text actiontarget = new Text();
        grid.add(actiontarget, 1, 6);

        // Handle login Button action
        btn.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent e) {
                if (userTextField.getText().equals("username") && pwBox.getText().equals("password")) {
                    actiontarget.setFill(Color.GREEN);
                    actiontarget.setText("Login successful!");
                } else {
                    actiontarget.setFill(Color.RED);
                    actiontarget.setText("Invalid username or password.");
                }
            }
        });

        // Handle registration Button action
        registrationBtn.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent e) {
                // TODO: Implement registration functionality
                actiontarget.setFill(Color.BLUE);
                actiontarget.setText("Registration page coming soon!");
            }
        });

        // Show the scene
        Scene scene = new Scene(grid, 300, 275);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

这个示例代码创建了一个简单的JavaFX登录注册页面，包括一个欢迎文本、用户名和密码输入框、登录和注册按钮以及一个消息文本。在点击登录按钮时，它会检查输入的用户名和密码是否正确，并在消息文本中显示相应的结果。在点击注册按钮时，它会显示一个提示消息，表示注册页面即将推出。你可以根据自己的需求自定义该页面的样式和功能。