Do you use the MyFaces Tiles integration? with the MyFaces Tiles-ViewHandler?
regards,
Martin
On 10/13/05, Marios Kerkemezos <[EMAIL PROTECTED]> wrote:
> Dear all,
>
> I know this has been discussed before, but some issues
> are still troubling me...
>
> I've been experimenting with different methods for
> handling exceptions in managed beans. The way I see
> it, handling exceptions can be performed in the
> following ways:
>
>
> (A). Handling the exception internally, creating the
> appropriate FacesMessages and / or forwarding to the
> appropriate error page using the Navigation Handler.
> This solution is obviously applicable only for
> exceptions thrown in action methods and action
> listeners.
>
> (B). Wrapping the exception in a FacesException and
> then re-throwing it. Doing so will cause the web
> container (e.g. tomcat) to display the error page
> configured in your web.xml. This is a fine solution
> (for me at least!) for exceptions thrown elsewhere in
> managed beans (e.g. in constructors that perform
> initialization logic). However I discovered a slight
> hitch: Internet Explorer has an "advanced" option
> called "Show friendly HTTP error messages" enabled by
> default, which will cause the Microsoft error page to
> be displayed instead of the one configured in your
> web.xml! This doesn't seem to be an issue with Firefox
> though...
>
> (C).Catching the exception, and then explicitly
> redirecting to some error page using
> externalContext.redirect("...");
> facesContext.responseComplete(); Again, this will
> have more or less the same effect as the previous
> solution, but this time avoiding the annoying IE
> "feature".
>
> I have tested all of the above solutions in a simple
> MyFaces (ver. 1.1) application, and they all work
> nicely. Turning to my real-world application, I am
> currently using solution (a) (for my action methods
> and listeners) but would also very much like to use
> (c) as well (for everything else). However, I am also
> using TilesServlet (from struts 1.1), and when tiles
> are put in the picture bizarre things start to happen:
>
> (Note the following applies only for exceptions thrown
> anywhere in the bean BUT in action methods/listeners)
>
> 1) Using solution (c) will cause the page that was
> originally requested to be displayed (possibly
> incomplete), but the redirect call is definitely being
> ignored (!).
>
> 2) Using solution (b) will produce a white page with a
> single line printed:
>
> [ServletException in:/WEB-INF/tiles/layout.jsp] Cannot
> get value for expression
> '#{someBean.someRandomProperty}''.
>
> The exception seems to be "consumed" at some unknown
> point and never "bubbles up" to the web container
> (although it is still printed in the application
> context log). I also tried catching the exception by
> setting up an http filter, but again without success
> (again no exception is caught by the filter).
>
> Since there are a lot of people using MyFaces and
> Tiles together someone must have dealt with this
> before. If anyone can help out, I would greatly
> appreciate it. I will provide code samples if
> necessary.
>
> If you are still reading, thank you for your patience!
>
> Mario
>
>
>
>
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>
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