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Provided id of the wrong type for class

javahibernate异常 
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常见Hibernate异常org.hibernate.TypeMismatchException: Provided id of the wrong type for class：

严重: Servlet.service() for servlet action threw exception
org.hibernate.TypeMismatchException: Provided id of the wrong type for class com.uitest.domain.Product. Expected: class java.lang.Long, got class java.lang.String
 at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:109)
 at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:905)
 at org.hibernate.impl.SessionImpl.get(SessionImpl.java:842)
 at org.hibernate.impl.SessionImpl.get(SessionImpl.java:835)
 at org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:531)
 at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
 at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
 at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:525)

通常这种错误是由于ID类型不对引起的！！！

解决的办法：检查下ID的类型，把页面串回来的id值由string没转换成Long类型，再进行删除，就可以了。

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2 楼 jayyunfei 2012-03-19  
但是如果我在实体类中把id改成Long，修改就能转过去，但是在保存的时候又报错，说类型不对，
1 楼 jayyunfei 2012-03-19  
我改了，怎么还是不行，在action中获取id以后，我用Long.parsLong("id");a怎么还报这个错？
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