Doesn't work JSF annotation @ListenerFor/@ListenersFor

annotations, jsf-2, listener, systemevent

Solution

As its javadoc tells you, the `@ListenerFor` is intented to be put on an `UIComponent` or `Renderer` implementation, not on a standalone `SystemEventListener` implementation. For the latter, you'd need to register it as `<system-event-listener>` in `faces-config.xml`.

E.g.

<application>
    <system-event-listener>
        <system-event-listener-class>com.example.MySystemEventListener</system-event-listener-class>
        <system-event-class>javax.faces.event.PostConstructApplicationEvent</system-event-class>
        <system-event-class>javax.faces.event.PreDestroyApplicationEvent</system-event-class>
    <system-event-listener>
</application>

For the particular functional requirement, you might want to consider to use an eagerly initialized application scoped bean instead. This is somewhat easier and doesn't require some verbose XML:

@ManagedBean(eager=true)
@ApplicationScoped
public void App {

    @PostConstruct
    public void init() {
        // ...
    }

    @PreDestroy
    public void destroy() {
        // ...
    }

}

Problem

JSF annotation @ListenerFor doesn't work with GlassFish or Tomcat. No errors or warnings. It's just doesn't call method processEvent(). ``` @ListenersFor({@ListenerFor(systemEventClass=PostConstructApplicationEvent.class), public class MySystemEventListener implements SystemEventListener { @Override public void processEvent(SystemEvent event) throws AbortProcessingException { if(event instanceof PostConstructApplicationEvent){ System.out.println("*********************************************"); System.out.println("processEvent Method is Called: PostConstructApplicationEvent"); System.out.println("*********************************************"); } if(event instanceof PreDestroyApplicationEvent){ System.out.println("*********************************************"); System.out.println("processEvent Method is Called: PreDestroyApplicationEvent"); System.out.println("*********************************************"); } } @Override public boolean isListenerForSource(Object o) { return (o instanceof Application); } } ``` With the idea of​​?

Original source