Steve, if you configure unknown="true" as part of your action mapping,
this action will be used if no action mapping is found and will forward to
the appropriate mapping.
I have not done this (or tried it), but I just checked the java doc for
ActionConfig and found that getUnknown indicates if this ActionConfig is
the default config in case none is found.
thanks for the question--helped me learn something.
Give that a try and report back :)
Brian
"Hill, Richard" <Rich.Hill@xxxxxxxxxx> wrote on 12/10/2004 03:00:32 PM:
> Subclassing ActionMapping definitely sounds like the most straight
> forward approach. I'm kind of
> surprised there isn't any error thrown as it is. I would also think
> that Struts would allow a default
> handler for if no matches occur. Subclassing does seem to be the
> easy route though.
>
> -----Original Message-----
> From: Brian K Bonner [mailto:brian.bonner@xxxxxxxxxxxx]
> Sent: Friday, December 10, 2004 3:02 PM
> To: users@xxxxxxxxxx
> Subject: Re: [cinjug-users] Struts question: how do you handle an
> undefined ActionForward value?
>
> Good question.
>
> You're basically returning a null ActionForward from your Action,
because
> the page is not found by the ActionMapping. It *is* because you have a
> programming error in your app.
> You could subclass ActionMapping to return an error page if a forward is
> not found (to help you as the programmer). What do other struts folks
do?
>
> Brian
>
> steve.gutter@xxxxxxxxxx wrote on 12/10/2004 01:09:06 PM:
>
> >
> > Granted that it shouldn't happen, but how do you handle the
circumstance
> > when the ActionModel class's
> > execute method returns an ActionForward value which is not defined as
a
> > forward name= value
> > in the ActionModel's action definition in struts-config.xml?
> >
> >
> > It causes the app to go to a blank page, but no exceptions, etc. are
> > thrown.
> >
> > I'm using the action entry with unknown="true" for the case where I
have
> an
> > href="xyz.do" and there is no
> > action defined for /xyz (which, again, granted shouldn't happen), but
> this
> > doesn't catch the other scenario.
> >
> >
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