URGENT- Classloader issue

[vivkap01]

Hi
We are migrating to JBOSS and have stumbled across many classloading issues.
We are using the JBOSS 3.2.3 and have not change any configuration, so its all the default settings.
We had a war file which worked with Weblogic , Orion and Tomcat , but fails miserably with JBOSS at several places.

Firstly we had problems because we use JDOM. This is the error I got

14:27:22,793 ERROR [LogInterceptor] Unexpected Error:
java.lang.NoClassDefFoundError: org/saxpath/SAXPathException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at org.jdom.xpath.XPath.newInstance(XPath.java:133)
at ch.argentis.base.xml.JXmlHelper.getValue(JXmlHelper.java:167)

I saw the same error in an earlier post , and so I thought of making a change in JDOM source. But then I saw jdom.jar used by JBOSS too, and because of classloading hierarchy it is this jdom.jar that would be used. Though I know there might be some setting so that the applications jdom.jar would be used rather than JBOSS's , my question is how come it works with three other servers and fails only with JBOSS.
Secondly I have log4j.properties file under WEB-INF/classes inside my war file. Any application server is supposed to find .properties file WEB-INF/classes because this should be in the classpath. But this does not seem to work, JBOSS is not finding the .properties file. Again it works just fine with other servers.
Do I have to tweak the default settings in JBOSS to get these things to work ? Will the later version of JBOSS fix these issues so that it works by default ?
I have spend lot of time reading various documents and trying different things, and have reached a frustration level, trying to deploy a simple war file.
I would appreciate any help for this. Thanks
--Viv

[wolfc]

You need to configure a loader-repository. (See http://www.jboss.org/wiki/Wiki.jsp?page=JakartaSlide or http://www.jboss.org/wiki/Wiki.jsp?page=ClassLoadingConfiguration)

[wolfc]

lol, I think bb needs a fix.

"wolfc" wrote:
You need to configure a loader-repository. (See
http://www.jboss.org/wiki/Wiki.jsp?page=JakartaSlide or
http://www.jboss.org/wiki/Wiki.jsp?page=ClassLoadingConfiguration)

[vivkap01]

Yes I tried that
I put this in jboss-web.xml under WEB-INF/

<jboss-web>
<class-loading java2ClassLoadingCompliance="false">
<loader-repository>
surya.com:loader=log4j.jar
<loader-repository-config>java2ParentDelegation=false</loader-repository-config>
</loader-repository>
</class-loading>
</jboss-web>


What should be the String values under loader-repository ?

It still did not work

[wolfc]

Do you still get the same exception?

[meissa]

you can fix this by setting the UseJBossWebLoader of the jboss-service
of the jboss-web-tomcat.sar like this.

false

let me know if it does'nt work.

[wolfc]

try:

run -L saxpath.jar

Oh and place saxpath.jar in ${jboss_home}/lib. :-)

It will be added to the NoAnnotationClassLoader which is used to load jdom.jar.