问JavaFX创建包含应替换文本的节点的fxml模板

EN

import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;

public class User {

    // These properties are used to display User data in the Scene
    private StringProperty username = new SimpleStringProperty();
    private StringProperty emailAddress = new SimpleStringProperty();

    /**
     * A simple constructor to build the User object with a username and email address
     */
    public User(String username, String emailAddress) {

        // Set the values for each of the User properties
        this.username.set(username);
        this.emailAddress.set(emailAddress);
    }

    public String getUsername() {
        return username.get();
    }

    public StringProperty usernameProperty() {
        return username;
    }

    public void setUsername(String username) {
        this.username.set(username);
    }

    public String getEmailAddress() {
        return emailAddress.get();
    }

    public StringProperty emailAddressProperty() {
        return emailAddress;
    }

    public void setEmailAddress(String emailAddress) {
        this.emailAddress.set(emailAddress);
    }
}

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.layout.VBox?>


<VBox xmlns="http://javafx.com/javafx/9.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <GridPane hgap="10.0" vgap="5.0">
        <columnConstraints>
          <ColumnConstraints hgrow="NEVER" minWidth="-Infinity" />
          <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" />
        </columnConstraints>
        <rowConstraints>
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        </rowConstraints>
         <children>
            <Label text="Username:" />
            <Label text="Email Address:" GridPane.rowIndex="1" />
            <Label fx:id="lblUsername" GridPane.columnIndex="1" />
            <Label fx:id="lblEmailAddress" GridPane.columnIndex="1" GridPane.rowIndex="1" />
         </children>
      </GridPane>
   </children>
   <padding>
      <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
   </padding>
</VBox>

import javafx.fxml.FXML;
import javafx.scene.control.Label;

public class MainController {

    // Here, we define our FXML elements. This allows us to access those elements directly from our Controller
    @FXML
    private Label lblUsername;
    @FXML
    private Label lblEmailAddress;

    // This is the User object that holds the data we want to display
    private User user;

    public MainController(User user) {
        this.user = user;
    }

    /**
     * The initialize() method is called when the FXML document is loaded. This is where we will populate our Scene
     * with the data from the User object passed to the controller's constructor. Since we already created our
     * constructor from the Main class, we have a valid User object to work with
     */
    @FXML
    private void initialize() {

        // There are two basic ways we can setup our Scene to display the User data. This demonstrates the proper Binding
        // method of doing so.

        // Bind the value of each Label to show the corresponding data from the User object
        lblUsername.textProperty().bind(user.usernameProperty());
        lblEmailAddress.textProperty().bind(user.emailAddressProperty());

        // The other method would be to simply set the text for each label. We will comment this out, however, as
        // using the above binding is preferred.
//        lblUsername.setText(user.getUsername());
//        lblEmailAddress.setText(user.getEmailAddress());

    }
}

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.stage.Stage;

import java.io.IOException;

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {

        // First, let's create a sample User, passing the username and email address to the constructor
        User user = new User("zephyr", "zephyr@home.com");

        primaryStage.setTitle("Data Object Sample");

        try {
            // Tell JavaFX where to find the FXML file and create a loader for it
            FXMLLoader loader = new FXMLLoader(getClass().getResource("MainLayout.fxml"));

            // Create a new MainController and pass our sample User to it
            MainController controller = new MainController(user);

            // Now that we've initialized our MainController with a User, let's set the controller for this FXML
            loader.setController(controller);

            // We may now load the FXML document and display the Scene
            primaryStage.setScene(new Scene(loader.load()));

            // Finally, show the Scene
            primaryStage.show();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

public void setUser (User user) {
    this.user = user;
}