CDI and JavaFX (javafx-weaver) Integration

Question

After reading some articles about the CDI and Java FX integration, and the source codes of javafx-weaver spring integration.

I decided to add CDI integration to Java FX via the existing javafx-weaver work to simplify the integration work.

The source code can be found here.

I added a simple producer to expose FxWeaver to the CDI context.

@ApplicationScoped
public class FxWeaverProducer {
    private static final Logger LOGGER = Logger.getLogger(FxWeaverProducer.class.getName());

    @Produces
    FxWeaver fxWeaver(CDIControllerFactory callback) {
        var fxWeaver = new FxWeaver((Callback<Class<?>, Object>) callback,
                () -> LOGGER.log(Level.INFO, "calling FxWeaver shutdown hook")
        );

        return fxWeaver;
    }

    public void destroyFxWeaver(@Disposes FxWeaver fxWeaver) {
        LOGGER.log(Level.INFO, "destroying FxWeaver bean...");
        fxWeaver.shutdown();
    }
}

The problem is when using fxWeaver.loadView to load view, the controller did not work as expected.

@ApplicationScoped
@FxmlView("HandlingReport.fxml")
public class HandlingReportController {
    private final static Logger LOGGER = Logger.getLogger(HandlingReportController.class.getName());

    @Inject
    private HandlingReportService handlingReportService;

    //fxml properties...

    @FXML 
    private void onSubmit(){...}
}

As above codes, the dependent service handlingReportService in the controller class is null(not injected) when performing an action like onSubmit, it seems when JavaFX handles the @FXML properties binding it always used java reflection API.

If I change the method to public void onSubmit()( use public modifier), all FX fields become null when pressing the onSubmit button.

Any idea to fix this issue?

Answer 1

Marked the controller class as @Dependentscope to resolve the problem.

@Dependent
public class HandlingReportController { ...}