Spring's JSF DelegatingVariableResolver cause InvocationTargetException

Question

Hi,
in our ADF Faces application, as part of the faces-config.xml, we have the following entry:
<variable-resolver>org.springframework.web.jsf.DelegatingVariableResolver</variable-resolver>    The spring.jar file, which contains above class, resides in the WEB-INF/lib
Everything works without any problem on OC4J,JBoss,.... but, when we try to execute application on WebLogic 10.3, the following exceptions occurs:
com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED!
  Source Document: file:/D:/OracleMiddleware/jdeveloper/system/system11.1.1.0.31.51.56/o.j2ee/drs/TEE/tee/WEB-INF/faces-config.xml
  Cause: Unable to create a new instance of 'org.springframework.web.jsf.DelegatingVariableResolver': java.lang.reflect.InvocationTargetException
     at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:211)
     at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:184)
     at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:465)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(Unknown Source)
     at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:175)
     at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1784)
     at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2999)
     at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1371)
     at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:468)
     at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
     at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
     at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
     at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
     at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117)
     at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
     at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
     at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
     at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
     at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635)
     at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
     at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)
     at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:16)
     at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:162)
     at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:79)
     at weblogic.deploy.internal.targetserver.BasicDeployment.activate(BasicDeployment.java:184)
     at weblogic.deploy.internal.targetserver.BasicDeployment.activateFromServerLifecycle(BasicDeployment.java:361)
     at weblogic.management.deploy.internal.DeploymentAdapter$1.doActivate(DeploymentAdapter.java:51)
     at weblogic.management.deploy.internal.DeploymentAdapter.activate(DeploymentAdapter.java:196)
     at weblogic.management.deploy.internal.AppTransition$2.transitionApp(AppTransition.java:30)
     at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
     at weblogic.management.deploy.internal.ConfiguredDeployments.activate(ConfiguredDeployments.java:169)
     at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:123)
     at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
     at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
     at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)What can be a wrong ?

Answer 1

Maxence Button wrote:
=> ship all your implementations in your app (web-inf/lib). Then package into an EAR and add some FilteringClassLoaders to isolate your classes in your application.
(this one is recommended by BEA | Oracle & me :) )
Maxence,
you point me to right direction.
I just put JSF implementation files (jsf-api.jar, jsf-impl.jar) along with spring.jar (which contains my variable-resolver) in the application WEB-INF/lib, and then:
1. in the the weblogic-application.xml, I just added:
    <prefer-application-packages>
        <package-name>javax.faces.*</package-name>
        <package-name>com.sun.faces.*</package-name>
        <package-name>org.springframework.*</package-name>
    </prefer-application-packages>2. manually added one new descriptor, well-know weblogic.xml, with the following entry:
    <container-descriptor>
      <prefer-web-inf-classes>true</prefer-web-inf-classes>
   </container-descriptor>After doing so, no more InvocationTargetException nor ClassNotFoundException
Thanks again,...