Adam Bialas created WFLY-11259: ---------------------------------- 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. -- This message was sent by Atlassian Jira (v7.12.1#712002)