[jboss-jira] [JBoss JIRA] (WFLY-11259) Wildfly 11.0.0.Final org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory

[Adam Bialas (Jira)]

Adam Bialas created WFLY-11259:
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             Summary: Wildfly 11.0.0.Final org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
                 Key: WFLY-11259
                 URL: https://issues.jboss.org/browse/WFLY-11259
             Project: WildFly
          Issue Type: Bug
    Affects Versions: 11.0.0.Final
            Reporter: Adam Bialas
            Assignee: Jason Greene


I have an ear file which I want to deploy to the Wildfly 11.0.0.Final. In this ear file in the lib folder I have dom4j-2.0.1.jar. One of the sub deployments (war) uses JPA (no dependencies to hibernate, just to javax.javaee-api as compile only). This sub deployment contains of course the persistence.xml file. I see in the logs that when the application server starts and loads this file the following exception is thrown: 
org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
and the application fails to deploy.
I checked many posts and forums on the net and as far as I understand I must exclude the dom4j provided by the application server so the jar located in the lib folder of ear can be used.

I created jboss-deployment-structure:
<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
	<deployment>
		<exclusions>
			<module name="org.dom4j"/>
		</exclusions>
	</deployment>
</jboss-deployment-structure>

Even though I get the same exception so I suppose both jars are loaded and cause problems.



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