Navigate to external URL from a backing bean?

Question

I\'m trying to implement proper logout for my Java EE / JSF2 application.

It requires two things:

1. I need to logout from JAAS and invalidate the session

Answer 1

You can also just use ExternalContext#redirect().

public void logout() throws ServletException, IOException {
    ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
    ((HttpServletRequest) ec.getRequest()).logout();
    ec.invalidateSession();
    ec.redirect("http://example.com/anothercontext/logout");
}

No need for an intermediating page with a meta refresh.

Answer 2

You can create a page logout.xhtml, so the code will look like this:

public String getLogoutUrl() {
    return "/logout.jsf";
}

and in the page add:

<META HTTP-EQUIV="Refresh" CONTENT="0;URL=https://localhost:8080/anotherwebapp/logout.html">