CoreContextListener fails to get classpath on WebLogic 10.3.5

What steps will reproduce the problem?
1. Build as WAR using the instructions at: 

http://books.zkoss.org/wiki/ZK%20Spring%20Essentials/Getting%20Started%20with%20
ZK%20Spring/Setting%20Up%20ZK%20Spring 

http://books.zkoss.org/wiki/ZK%20Spring%20Essentials/Working%20with%20ZK%20Sprin
g

2. The web.xml is confiured NOT to use the URL-class loader:
<context-param>
  <param-name>use-urlclassloader</param-name>
  <param-value>false</param-value>
</context-param>

<listener>
  <listener-class>
    org.zkoss.spring.web.context.CoreContextListener
  </listener-class>
</listener>      

2.Deploy the WAR to a WebLogic 10.3.5 domain on Windows.
3. During application startup a NullPointerException is generated.

What is the expected output? What do you see instead?

The exception is thrown by CoreContextListener at:
urlSet.add(ClasspathHelper.getUrlForServletContextClasses(sce.getServletContext(
))) which returns null on WebLogic.

What version of the product are you using? On what operating system?
ZK-Spring 3.1
Windows XP

Please provide any additional information below.

Running the application on a embedded Jetty, the above method returns a defined 
URL set and the application starts.

Implemented a fix for WebLogic by encapsulating the method call in a tryg-catch 
clause which ate the null pointer exception. Next problem was then to get URL's 
on WebLogic to scan, which was implemented by adding on of either methods:

urlSet.addAll(ClasspathHelper.getUrlsForWebInfLib(sce.getServletContext()));
urlSet.addAll(ClasspathHelper.getUrlsForPackagePrefix("com.alpha.pineapple.web.u
i"));

Original issue reported on code.google.com by einher...@gmail.com on 20 Jan 2012 at 8:21

zkoss / zkspring

CoreContextListener fails to get classpath on WebLogic 10.3.5 #25