继承映射中的java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: person is not mapped [FROM person]

继承映射中查询对象的过程中报错：

java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: person is not mapped [FROM  person]

HQL查询的是持久化类名而不是表名，

List<Person> persons=session.createQuery("FROM  person").list();

所以应该改为from Person