Question

我正在将JavaFX 2与Spring Framework结合使用，但是注入发生得很晚。我的控制器由FXML-Loader实现，该控制器的成员变量的Spring注入工作，但它的工作时间太晚，这意味着在（1）注入但没有发生，并且在（2）注入确实发生：

public class MainController extends AbstractController
{
    @Autowired
    public StatusBarController statusbarController;

    // Implementing Initializable Interface no longer required according to
    // http://docs.oracle.com/javafx/2/fxml_get_started/whats_new2.htm:
    private void initialize() {
        BorderPane borderPane = (BorderPane)getView();        
        borderPane.setBottom(statusbarController.getView()); // (1) null exception!
    }

    // Linked to a button in the view
    public void sayHello() {
        BorderPane borderPane = (BorderPane)getView();        
        borderPane.setBottom(statusbarController.getView()); // (2) works!
    }
}

让Spring注入statusbarController之前的状态是什么？我不能让用户点击按钮加载我的GUI; - ）

我的AppFactory是这样的：

@Configuration
public class AppFactory 
{
    @Bean
    public MainController mainController() throws IOException
    {
        return (MainController) loadController("/main.fxml");
    }

    protected Object loadController(String url) throws IOException
    {
        InputStream fxmlStream = null;
        try
        {
            fxmlStream = getClass().getResourceAsStream(url);
            FXMLLoader loader = new FXMLLoader();
            Node view = (Node) loader.load(fxmlStream);
            AbstractController controller = (AbstractController) loader.getController();
            controller.setView(view);
            return controller;            
        }
        finally
        {
            if (fxmlStream != null)
            {
                fxmlStream.close();
            }
        }
    }
}

Answer 1

您应该在FXMLLoader上设置一个ControllerFactory，以便您负责创建控制器实例。

依赖注入为时已晚

1 个答案: