Class loading problem regarding ear's lib directory

I have an ear artifact like this:

asepdemo-ear-1.1.0-SNAPSHOT.ear

- lib

  - aseplib-commons-1.4.4-SNAPSHOT.jar (contains class AsepException)

  - ...

- aseplib-server-1.4.4-SNAPSHOT.jar

- ...

It seems that my subdeployment aseplib-server does not have access to the libs in the lib directory:

11:09:42,683 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC00001: Failed to start service jboss.deployment.subunit."asepdemo-ear-1.1.0-SNAPSHOT.ear"."asepli

b-server-1.4.4-SNAPSHOT.jar".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."asepdemo-ear-1.1.0-SNAPSHOT.ear"."aseplib-server-1.4.4-SN

APSHOT.jar".POST_MODULE: Failed to process phase POST_MODULE of subdeployment "aseplib-server-1.4.4-SNAPSHOT.jar" of deployment "asepdemo-ear-1.1.0-SNAPSHOT.ear"

        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121)

        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)

        at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_21]

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_21]

        at java.lang.Thread.run(Thread.java:619) [:1.6.0_21]

Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: java.lang.ClassNotFoundException:

                                de.xy.platform.errorhandling.AsepException

                         from [Module "deployment.asepdemo-ear-1.1.0-SNAPSHOT.ear.aseplib-server-1.4.4-SNAPSHOT.jar:main" from Service Module Loader]

        at org.jboss.as.ejb3.deployment.EjbJarDescription.prepareApplicationExceptions(EjbJarDescription.java:155)

        at org.jboss.as.ejb3.deployment.EjbJarDescription.prepareEjbJarConfiguration(EjbJarDescription.java:144)

        at org.jboss.as.ejb3.deployment.EjbJarDescription.createEjbJarConfiguration(EjbJarDescription.java:132)

        at org.jboss.as.ejb3.deployment.processors.EjbJarConfigurationProcessor.deploy(EjbJarConfigurationProcessor.java:46)

        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115)

        ... 5 more

Is there any configuration needed?

I already added

<jboss-deployment-structure>

  <!-- Make sub deployments isolated by default, so they cannot see each others classes without a Class-Path entry -->

  <ear-subdeployments-isolated>false</ear-subdeployments-isolated>

</jboss-deployment-structure>

正确答案：

So the problem was not really related to class loading. If you have an ejb-jar.xml like

       <application-exception>

            <exception-class>

              de.xyz.platform.errorhandling.AsepException

            </exception-class>

            <rollback>true</rollback>

        </application-exception>

dear JBoss is not even capable of triming away white spaces, but it tries to load "

         de.xyz.platform.errorhandling.AsepException

" class.