今天在出来Spring整合Jpa,由于是刚开始整合,难免会遇到很多问题。。。。。但是今天的这个问题真的让人很郁闷。。一直提示 No PersistenceProvider specified in EntityManagerFactory configuration, and chosen PersistenceUnitInfo does not specify a provider class name either这个错误,旁边还显示着org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [beans.xml]:: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No PersistenceProvider specified in EntityManagerFactory configuration, and chosen PersistenceUnitInfo does not specify a provider class name either 这样总的错误。。。今天在出来Spring整合Jpa,由于是刚开始整合,难免会遇到很多问题。。。。。但是今天的这个