Re: [cinjug-users] Struts question: how do you handle an undefined ActionForward value?

[bill.manuel@xxxxxxxxxx]

I handle this problem like list:
In the method in your action class that is executing, create a variable
ActionForward forward = mapping.findForward("someDefaultForward");
This variable gets returned at the end of the method:  return forward;
Anywhere in the method you can return with any ActionForward that you want,
but at least you have a default forward to fall back on.  Make sure this
default forward is listed in your struts-config under either the action or
the global forward.





Bill Manuel
Sun Certified Web Component Developer
bill.manuel@xxxxxxxxxx



                                                                           
             Brian K Bonner                                                
             <brian.bonner@par                                             
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                                       users@xxxxxxxxxx                    
             12/10/2004 03:01                                           cc 
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                                                                   Subject 
                                       Re: [cinjug-users] Struts question: 
             Please respond to         how do you handle an undefined      
             users@xxxxxxxxxx          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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