org.hibernate.MappingException: Association references un地图ped class: com.lj.zh

org.hibernate.MappingException: Association references unmapped class: com.lj.zh
Caused by: org.hibernate.MappingException: Association references unmapped class: com.lj.zhang.Order
at org.hibernate.cfg.HbmBinder.bindCollectionSecondPass(HbmBinder.java:2521)
at org.hibernate.cfg.HbmBinder$CollectionSecondPass.secondPass(HbmBinder.java:2807)
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:69)
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1611)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1369)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1756)
at util.HibernateUtil.buildSessionFactory(HibernateUtil.java:19)
at util.HibernateUtil.<clinit>(HibernateUtil.java:13)
... 1 more



这个错误出现在

原因是我在User.hbm.xml中配置了One-to-many  ， class是Order.

可是Order这个对象的hbm.xml我并没有在hibernate.cfg.xml中配置。
也就是缺少了<mapping resource="Order.hbm.xml"/>
导致出错。


看来Hibernate会在启动时对这些进行很仔细的检查，
怪不得启动这么慢。