Question

In my attempts to find out the reason for the problems stated in this question: JSF2 slow page loading, I would like to time a user session filter I use. I’ve created a timer that is an ApplicationScoped bean.

My question is if it’s possible to access this bean as a managed property from the filter. In my other beans I can do this, although in the filter the managed property is always null.

Answer 1

Updated Answer:

Access your application scoped bean from filter in the follwoing way

ServletContext context = req.getServletContext();
MyAppBean myAppBean = (MyAppBean) context.getAttribute("myAppBean");

Access your session scoped bean from filter in the following way

HttpSession session = ((HttpServletRequest) req).getSession(false);
MyAppBean myAppBean = (MyAppBean ) session.getAttribute("myAppBean");

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Original Answer :

Yes you can , make it (eager = true) , and add the needed annotations

@ManagedBean(eager = true)
@ApplicationScoped
public class MyAppBean { }

and in your sesion scoped bean access it like this

@ManagedProperty(value = "#{myAppBean }")
private MyAppBean myAppBean; //add getter and setter

If your bean is not a @ManagedBean you can access it from the ApplicationMap like this

MyAppBean myAppBean = (MyAppBean ) FacesContext.getCurrentInstance().
    getExternalContext().getApplicationMap().get("country");

If the bean you want to access is a @SessionScoped you can grab it from the SessionMap like this

MyAppBean myAppBean = (MyAppBean ) FacesContext.getCurrentInstance().
    getExternalContext().getSessionMap().get("country");

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Here you got some nice tutorial on how to access beans from a non managed beans

Access A Managed Bean From Event Listener – JSF