Albert Guojunyuo@gmail.com

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Persistence.xml

Persistence

EntityManagerFactory

Query

EntityManager

Transaction

persist()find()merge()delete()

persist()find()merge()delete()

EntityManagerFactoryBeanEntityManagerFactoryBean

JpaTemplateJpaTemplate

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EntityManagerFactoryBeanEntityManagerFactoryBean

JpaDaoSupportJpaDaoSupport

JpaTemplateJpaTemplate

Injected into

DepartmentDAO IDepartmentDAO

extends

implements

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entityManagerFactor

transactionManager

Inject into

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entityManagerFactor

DepartmentDAO

Inject into

JPAServiceBean

Inject into

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Jpatest.rar