wildfly 10: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory

Question

I have a maven application that works fine in wildfly 8.2, but when Ideployed it in wildfly 10 this error happened:

[2016-02-21 11:22:08,411] Artifact Sarama         


        

Answer 1

I had the same problem but finally what I did is to remove (redundant) Hibernate libraries from pom.

As Wildfly is already using Hibernate as JPA provider (https://docs.jboss.org/author/display/WFLY10/JPA+Reference+Guide#JPAReferenceGuide-Introduction), you do not need to provide such classes at all (unless you are directly using Hibernate classes).

So the minimal config is working fine:

  
    
      javax
      javaee-api
      7.0
      provided
    
  

And persistence.xml

    org.hibernate.jpa.HibernatePersistenceProvider
    java:/jdbc/MySqlDS
    
        
        
    

Tested on Wildfly 10.