[jboss-user] [Beginners Corner] - NoClassDefFoundError when application deployed in ear

[gubenc]

Hi,

I have an application that works fine on JBoss when
the jar files are deployed separately but throws a NoClassDefFoundError when they are deployed in a .ear
file together. I studied the FAQ about this topic and I know
the Class-Path manifest header but I was not able to
solve my problem. I describe the content of my ear
file and the references between them.

  |   application.ear
  |      framework.jar 
  |          (EJB Module, contains the remove interfaces too).
  |          Class-Path: plugin1.jar plugin2.jar framework.jar
  |      plugin1.jar
  |          (Utility classes)
  |          Class-Path: business-logic.jar
  |      plugin2.jar
  |          (Utility classes)
  |          Class-Path: business-logic.jar
  |      business-logic.jar
  |          (Utility classes)
  |          Class-Path: framework.jar
  | 
As you can see there are circular references between the jar files (i.e framework.jar - plugin1.jar - business-logic.jar - framework.jar). I suspect this could be the cause of the problem. Even an EJB module participates in a circle. Does the J2EE standard allow
such circular references between the jar files in an ear
file?





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