javafx中的控制器和fxml

在javafx中fmlx文件指定的控制器中的方法如果没有加上@FXML注解的话，就必须是public

以下是测试代码：

JavaFXApplication5

/TestJavafx/src/testFXML/testController/SampleController.java

package testFXML.testController;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;

/**
 *
 * @author Administrator
 */
public class SampleController implements Initializable {
    
    @FXML
    private Label label;
    /**
     * 两种写法，如果在方法名的前面放就加上@FXML则方法可以是private
     * 如果不写，就只能是公开的
     */
    public void handleButtonAction(ActionEvent event) {
//    @FXML
//    private void handleButtonAction(ActionEvent event) {
        System.out.println("You clicked me!");
        label.setText("Hello World!");
    }
    
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    }    
}

/TestJavafx/src/testFXML/testController/JavaFXApplication5.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package testFXML.testController;

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

/**
 *
 * @author Administrator
 */
public class JavaFXApplication5 extends Application {
    
    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
        
        Scene scene = new Scene(root);
        
        stage.setScene(scene);
        stage.show();
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX application.
     * main() serves only as fallback in case the application can not be
     * launched through deployment artifacts, e.g., in IDEs with limited FX
     * support. NetBeans ignores main().
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
}

/TestJavafx/src/testFXML/testController/Sample.fxml

可以看到在控制器中的写法