Access exception stacktrace from error page

[Vasilis BnUser]

I am using pages.xml to handle System excpetions in Seam. I have included these lines to the pages.xml file to handle the nullPointerExcpetions:

<exception class="java.lang.NullPointerExcpetion">
<redirect view-id="/error.xhtml">
<message>error occured</message>
</redirect>

With this I achieved to redirect on a error page every time that i get a nullpointer exception in the system. The functionality i want to add is somehow to have access to the stacktrace of the exception within the error page (for debug purposes). Is this possible?

[Pete Muir]

It's there as #{org.jboss.seam.handledException}

[Vasilis BnUser]

I have just tried that and the result is the first line of the exception occured. Is there a similar way to return the full stack trace?

[Nicklas Karlsson]

The Manual speaks of

org.jboss.seam.handledException holds the nested exception that was actually handled by an exception handler. The outermost (wrapper) exception is also available, as org.jboss.seam.exception.

is there anything useful in org.jboss.seam.exception?

[Pete Muir]

That's because it's an object and that's what it's toString() does!

You'll need some facelet or JSF component that is capable of writing out an exception message and stack trace when handed an exception object.