Wow, you are my hero! I've always missed that from the Weblogic days! I
for one would love to see this added.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
AIM: fzammetti
Yahoo: fzammetti
MSN: [EMAIL PROTECTED]
On Tue, October 11, 2005 1:15 pm, Tim Fennell said:
> Apologies in advance for cross-posting this, but I sent this email
> out to the tomcat-dev list a couple of days ago and have received no
> replies at all... I think this is quite a useful feature, and I'm
> wondering how best to go about contributing it.
> Thanks
>
> -Tim Fennell
> http://stripes.mc4j.org
>
> Begin forwarded message:
>
>> From: Tim Fennell <[EMAIL PROTECTED]>
>> Date: October 9, 2005 5:50:11 PM EDT
>> To: tomcat-dev@jakarta.apache.org
>> Subject: More helpful reporting of exceptions in JSPs
>> Reply-To: "Tomcat Developers List"
>>
>>
>> Hi,
>>
>> I'll apologize in advance if this is the wrong place to post this,
>> or if this has been covered before. I had a good read through the
>> Tomcat docs and faqs, searched the bug database, and googled around
>> on the topic, but could not really find anything.
>>
>> I've been using Tomcat for a while, and in general have found it as
>> good a servlet/JSP container as any I've used. With one exception
>> (no pun intended). A long time ago I started out using WebLogic,
>> and the one thing that I loved about WebLogic, that is missing from
>> Tomcat, is that when an Exception occurred in a JSP it would tell
>> you what line number *in the JSP* generated the exception, and show
>> you a snippet of code around the offending line.
>>
>> For quite a while I'd figured that the way Tomcat was built
>> prevented this from being easy/possible, but I didn't look. Well,
>> I finally got around to looking, and it only took me a couple of
>> hours to implement it. Which makes me wonder if there is some
>> other reason that this isn't done in Tomcat/Jasper?
>>
>> At any rate, I have code that will do this now, and I think it'd be
>> a great productivity boost for anyone else developing JSPs on
>> Tomcat. It amounts to small patches to two files. The first is
>> org.apache.jasper.compiler.Compiler to make it hang on to the parse
>> tree (pageNodes) if in development mode, and a getter to make this
>> accessible. The second is to
>> org.apache.jasper.servlet.JspServletWrapper to do the grunt work of
>> mapping a stack frame from the exception back to the line in the
>> JSP that it came from.
>>
>> It's all coded up to function only when in development mode, and is
>> reasonably well commented. Would any of the committers be
>> interested in taking a look at this if I put together a patch and
>> posted it here? Cheers,
>>
>> -Tim Fennell
>> http://stripes.mc4j.org
>>
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