问题出在@PersistenceContext批注中。我有：
@PersistenceContext(type = PersistenceContextType.EXTENDED)private EntityManager entityManager;
我将其替换为：
@PersistenceContextprivate EntityManager entityManager;
问题出在@PersistenceContext批注中。我有：
@PersistenceContext(type = PersistenceContextType.EXTENDED)private EntityManager entityManager;
我将其替换为：
@PersistenceContextprivate EntityManager entityManager;
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