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Hibernate could not locate named parameter

今天遇到一个特别奇怪的问题,执行以下查询时Hibernate报异常

Hibernate: could not locate named parameter[state]

::java
this.session.createQuery("from " + Project.class.getName() + " project where project.state = :state").setParameter("state", state).list();

然而奇怪的是,很明显参数设置正常,苦恼地去向Google娘寻找答案,最近在这里找到了答案:

So to summarize, when you attempt to make a query on a non-entity, Hibernate will not complain that it is not an entity – it will complain about other things.

原来是因为我之前重建表结构时,屏蔽了无关实体的映射,后来忘记恢复了,在 hibernate.cfg.xml 中恢复实体映射,问题解决。

粗心是程序员的大忌呀!