异常 org.hibernate.MappingException: Unknown entity: entity.XXXX

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hibernate报的异常

org.hibernate.MappingException: Unknown entity: entity.Questions

at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:628)
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.getSQLLoadable(SQLQueryReturnProcessor.java:335)
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processRootReturn(SQLQueryReturnProcessor.java:376)
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processReturn(SQLQueryReturnProcessor.java:355)
at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.process(SQLQueryReturnProcessor.java:171)

at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:87)
at org.hibernate.engine.query.NativeSQLQueryPlan.<init>(NativeSQLQueryPlan.java:67)
at org.hibernate.engine.query.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:136)
at org.hibernate.impl.AbstractSessionImpl.getNativeSQLQueryPlan(AbstractSessionImpl.java:160)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:175)

at dao.QuestionsDao.findByHid(QuestionsDao.java:46)

这是因为我的Questions实体类的xml映射文件没有添加到hibernate中

解决方法如：hibernate.cfg.xml中加入<mapping resource="com/oumuv/entity/Questions.hbm.xml">

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