Servlet listener that exposes the request to the current thread,
. To be registered as listener in
DispatcherServlet also expose
the same request context to the current thread. In contrast to this listener,
advanced options are available there (e.g. "threadContextInheritable").
This listener is mainly for use with third-party servlets, e.g. the JSF FacesServlet.
Within Spring's own web support, DispatcherServlet's processing is perfectly sufficient.