异常org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.mi.domain.Department.id

【异常提示】 org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.mi.domain.Department.id

　　　　　　 java.lang.IllegalArgumentException: object is not an instance of declaring class

解决办法：Hql 中的级联关系不能传入外键，而是要传入级联对象，学习还是要认真仔细啊