log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.ExceptionInInitializerError
at ping.jpa.BaseTest.addUser(BaseTest.java:21)
at ping.jpa.BaseTest.main(BaseTest.java:15)
Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named persistUnitName
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32)
at ping.jpa.JpaUtil.<clinit>(JpaUtil.java:10)
... 2 more
这个是什么错误?我是按着传智播客的JPA入门的视频来的,谁帮忙看下 - - 搞了半天没搞出来,这边的文章看了也没用诶。。help~
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.ExceptionInInitializerError
at ping.jpa.BaseTest.addUser(BaseTest.java:21)
at ping.jpa.BaseTest.main(BaseTest.java:15)
Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named persistUnitName
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32)
at ping.jpa.JpaUtil.<clinit>(JpaUtil.java:10)
... 2 more
这个是什么错误?我是按着传智播客的JPA入门的视频来的,谁帮忙看下 - - 搞了半天没搞出来,这边的文章看了也没用诶。。help~
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货