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javax.persistence.PersistenceException: No Persistence provider for EntityManager - WebApplication

 
David de Lucca
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Posts: 10
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Hey guys!

I have a persistence.xml file inside my web application and it only works after that i try to access the context on browser. If i do deploy and don't try to access the application ( http://localhost:8080/MyApp ), it gives me an exception:


javax.persistence.PersistenceException: No Persistence provider for EntityManager named


I have some tasks that runs independently access or not the application and when the tasks run before access, i get that exception.

How can i fix it?

JPAUtil.java


persistence.xml


Thanks.

David
 
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