Sure, you can store the exception within the session object,
call sendRedirect() within the exception handler, and forward it
to *some* JSP page or servlet. (You will run into some
minor issues apropos the visibility of the session object (usually
created within a service() method), but you can get around it
nevertheless)
But if you want the servlet to call the *JSP error page*, you *have*
to place the throwable object within the request object, tag
it appropriately, and then perform a forward using a
request dispatcher to the delegate error page. This is
needed because the implicit "exception" object is
created by doing a getValue() on the "javax.servlet.jsp.jspException"
attribute expected within the request object.
If the specified attribute in not located within the request, then
the JSP engine usually throws an "Error: 500 Unknown Exception"
error.
Govind
> Sachin Aggarwal wrote:
>
> What are the reasons for not using the following approach ?
>
> Save the exception as a session object and call sendRedirect on the
> response object. This way you can redirect to a page even if you have
> written to the printWriter.
>
> > -----Original Message-----
> > From: Govind Seshadri [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, December 14, 1999 9:13 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Using Error Pages from servlets
> >
> >
> > Arun Thomas wrote:
> > >
> > > Hello all,
> > >
> > > Can anyone point me to a resource that shows how error
> > pages can be used
> > > from a servlet.
> > > I've got an error page that I am using for exceptions
> > generated in my jsp
> > > pages, and
> > > I'd like to use the same one for servlet exceptions.
> > Unfortunately, I
> > > haven't been
> > > able to find anyplace where the interface to an error page
> > is spelled out.
> > >
> >
> > See the jGuru JSP FAQ entry titled "Can I invoke a JSP error
> > page from a
> > servlet?" at:
> >
> http://www.jguru.com/jguru/faq/view.jsp?EID=1347
>
> Govind
>
> --
> Govind Seshadri <[EMAIL PROTECTED]>
> jGuru.com - Your Gateway to the Java Universe
> http://www.jguru.com
>
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--
Govind Seshadri <[EMAIL PROTECTED]>
jGuru.com - Your Gateway to the Java Universe
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