org.hibernate.MappingException: Unknown entity: java.lang.String

在session.delete(参数)时有时会出现以下的错误：
org.hibernate.MappingException: Unknown entity: java.lang.String
是因为api中没有提供参数为String的方法
（1）void delete(Object object)
          Remove a persistent instance from the datastore.
（2）void delete(String entityName, Object object)
          Remove a persistent instance from the datastore.

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Tags: ExceptionException UnknownUnknown