What application server are you using? I know, for instance, with
certain versions of WebSphere, I've need to have the application
classloader configured as the first classloader in order to get things
to work properly.
- James
Ugo Cei wrote:
Hi,
I'm currently trying to use Abdera 0.4.0 for generating Atom feeds from
an Atlassian Confluence plugin. I suspect there are some classloader
issues when using Abdera in this scenario, because if I use the
following typical idiom:
abdera = new Abdera();
Feed feed = abdera.newFeed();
I get an NPE due to the fact that abdera.getFactory() returns null.
Apparently the ServiceUtils class is not finding classes to load. I
tried working around the issue by using my own version of
AbderaConfiguration that "news" FOMFactory, FOMParser, etc. instead of
relying on ServiceUtils (which confirms, by the way, that the various
dependencies like Axiom are in the classpath), but I got stuck again
with the following trace:
javax.servlet.ServletException: Servlet execution threw an exception
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
...
caused by: java.lang.ExceptionInInitializerError
at org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:408)
...
caused by: java.lang.IllegalStateException: No valid ObjectCreator found.
at org.apache.axiom.om.util.StAXUtils$Pool.(StAXUtils.java:64)
Has anyone ever tried doing something similar or fallen into the same
kind of problems? For the record, this is using Abdera 0.4.0 in
Confluence 2.8, JDK 1.5 on OS X Tiger.
Thanks in Advance
Ugo
