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Posted to users@tomcat.apache.org by "Caldarale, Charles R" <Ch...@unisys.com> on 2009/07/26 03:47:59 UTC
RE: JSPwriterImpl generates IO exception while processing
that gets forwarded.
> From: Leonard Gestrin [mailto:Leonard.Gestrin@markettools.com]
> Subject: JSPwriterImpl generates IO exception while processing
> <jsp:include>that gets forwarded.
>
> Is it illegal to forward request while processing "include"?
No, but it's illegal to forward a request after the response has been committed.
Are you actually doing a RequestDispatcher.forward() call, or are you using HttpServletRequest.sendError()? The latter is the proper way to trigger the error page.
- Chuck
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RE: JSPwriterImpl generates IO exception while processing
that gets forwarded.
Posted by Leonard Gestrin <Le...@markettools.com>.
I have servlet filter that is invoked ahead of any application code that catches all unhandled exceptions, and then it forwards request to appropriate page depending on the exception.
I am indeed doing requestDispatcher.forward() and I set attributes on the request that are later used in custom error jsp for presentation.
It seems to work fine for all the cases so far except with <jsp:include "someservlet/> where someservlet generates runtime exception. (the browser does get the right error page, but exceptions are logged from tomcat).
I will experiment with using response.sendError() although it's not clear how to pass information back to the page (it appears I can only send a message) , such as stack trace, timestsamp of error, etc. I guess I can cramp it into message and parse it back in the page, but It does not feel right.
I also think that I might be in danger of getting IllegalStateException since it's possible that some info can be already written back to the client. Lets say, I have multiple <jsp:include "servlet1/>, <jsp:include "servlet2/>, and second include generated runtime exception - I suspect this might resolve in IllegalStateException during sendError() although i haven't tested it yet.
Thank you for your responses;
-----Original Message-----
From: Caldarale, Charles R [mailto:Chuck.Caldarale@unisys.com]
Sent: Saturday, July 25, 2009 6:48 PM
To: Tomcat Users List
Subject: RE: JSPwriterImpl generates IO exception while processing <jsp:include>that gets forwarded.
> From: Leonard Gestrin [mailto:Leonard.Gestrin@markettools.com]
> Subject: JSPwriterImpl generates IO exception while processing
> <jsp:include>that gets forwarded.
>
> Is it illegal to forward request while processing "include"?
No, but it's illegal to forward a request after the response has been committed.
Are you actually doing a RequestDispatcher.forward() call, or are you using HttpServletRequest.sendError()? The latter is the proper way to trigger the error page.
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
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