No Persistence provider for EntityManager named …
I have my persistence.xml with the same name, using toplink, under META-INF directory. Then I have my code calling it with...

It should have been in the classpath... Yet, I got the above error... Really appreciate any help... Thanks
    1 楼    29163077    2010-09-01              能不能说中文 详细点？    2 楼    dontal    2010-12-20              Maybe your persistence.xml is put in a wrong folder, ranther than META-INF.    3 楼    我思故我在    2012-07-03              Please pay attention to “No Persistence provider for EntityManager”

That means you don‘t hava the persistence provider

Just add the jar “hibernate-entitymanager.jar”，Then problem is OK ！