How to clear an object of the session scoped managed bean?

Question

I am developing a login based application in JSF with primefaces. In that I kept the logged user info in session scoped managedbean and I need to clear that details when he logged out, So How to clear those details which are in SessionScoped ManagedBean object?

Answer 1

You need to invalidate the current session by calling the following function in your action method:

FacesContext.getCurrentInstance().getExternalContext().invalidateSession();

Also, as the session scoped beans are trashed buring the subsequent request, be sure to send a redirect:

FacesContext.getCurrentInstance().getExternalContext().redirect("/login.xhtml");

Or, simply return a navigation case outcome from your method:

return "login.xhtml?faces-redirect=true";

In case you don't want to invalidate the session and, effectively, retaining your session scoped beans (which is a bad practice in my opinion), just nullify all of the user data (which was hopefully collected in one session scoped managed bean) in the logout method (you may need to inject that bean in case the logout method resides in another session scoped bean).