ErrorPageWriter causes Facelets/MyFaces confusion
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Key: MYFACES-1853
URL: https://issues.apache.org/jira/browse/MYFACES-1853
Project: MyFaces Core
Issue Type: Improvement
Components: General
Affects Versions: 1.2.2
Environment: MyFaces 1.2.2
Facelets 1.1.3
Tomcat 6.0.14
Reporter: Michael Heß
I just stumbled upon some weired problem. I have a rather basic myfaces
1.2.2 + facelets 1.1.3 setup. What I tried to achieve, is to NOT have
either Facelets nor MyFaces handle any of the error 500 scenarios.
Right now, in case of error 500 I have a facelets error page. "An Error
Occured", and collapsable trees for the components etc. You know the
drill.
So I decided to disable debugging in facelets, by switching
context-parameter facelets.DEVELOPMENT to false. This was the first moment
I got confused, because devmode was already disabled.
BUT: The error page definetly states "Generated by Facelets" in the lower
right corner.
I spent the last hour tracking this down. So far I have confirmed that the
FaceletsViewHandler does not trigger the generation of said errorpage. So
I searched some more, and found javax.faces.webapp._ErrorPageWriter to be
the culprit. The problem is, that it seems to be a copy of the Facelets
DevTools class. And furthermore the filename of the error-template has
been copied as well. It's
"META-INF/rsc/facelet-dev-error.xml"
on both myfaces as well as facelets. I have checked the template included
with myfaces and it is clearly different from the one included with
facelets. So my best guess right now (I have not confirmed this any
further) is, that MyFaces loads the template from facelets.jar due to some
unlucky webapp classloader situation.
Although the solution to my current problem is most likely to just disable
debugging in myfaces as well, I would like to strongly advise to change
the filename of the MyFaces error-template. This really confused me a lot.
:-)
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