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I stumbled upon a problem where a Java web application complained about an XsltException which was caused by a missing stylesheet. Although the stylesheet existed, it was not found for some reason.
After configuring log4j to see, where the app was looking for the stylesheet, I realised that it was being looked for from the wrong location. The cause of the problem was Maven and JRebel. The following is a snippet from the pom.xml file.
<webResources>
<resource>
<directory>${basedir}/resources/${conf.name}</directory>
</resource>
<resource>
<directory>${basedir}/../build/ear/web</directory>
</resource>
</webResources>The issue was that these resource tags were in reverse order in rebel.xml and that caused the application to look for stylesheets from the wrong location. As a side note, this issue was seen only on Windows environments, Linux and OSX were fine. To fix it, I changed the order in my pom.xml file.