[opencms-dev] Strange JSP compile behaviour

[Jonathan Woods]

Joe -

I've seen odd behaviour on repeated JSP reloads - e.g. blank pages being
delivered occasionally - but have never got to the bottom of what's
producing the behaviour.  I wonder if it's a threading problem.  I suspect
the core OpenCms code, but you might be able to get round it by setting the
JSP 'singlethreadmodel' directive in your own pages (I forget precisely what
it's called) and see if that makes any difference.

Jon

-----Original Message-----
From: opencms-dev-bounces at opencms.org
[mailto:opencms-dev-bounces at opencms.org] On Behalf Of Joe Desbonnet
Sent: 15 September 2006 13:43
To: The OpenCms mailing list
Subject: [opencms-dev] Strange JSP compile behaviour

For convenience I put common template code into "library" JSP files in a
"lib" directory which I include at the top of my template JSP scripts... so
my template module directory layout is something like:

(module dir)/resources/
(module dir)/templates/
(module dir)/templates/lib/

At the top of my template JSP scripts I have an include, something like:
<%@include file="lib/_jsp_header.jsp"%>

This works very well, 99.99% of the time. But very occasionally (and this
seems to happen after a manual purge of the FlexCache) the live site
randomly reports 500 errors. The jist of the error is a JSP compilation
error: cannot find file "lib/lib/_jsp_header.jsp". Note that it's looking
for my include relative to the lib directory -- not the template directory.

Even stranger: if I reload the problematic page a few times it sometimes
works and sometimes reports the 500 error.  It's like it's broken in some
server threads and not others.

Can anyone think of a possible cause of this. Of course I could hard code
absolute path's in my includes, but that would be ugly IMHO.

This must be a bug of some sort. I would have thought that the "current
directory" when looking for include files during compile should be the same
in all cases.

I am using OpenCms 6.0.4, Tomcat 5.5.9, JDK 1.5.0_07 on Linux.

Joe.

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