is not mapped 错误改正

我出现的错误是：oorg.hibernate.hql.ast.QuerySyntaxException: DEPT is not mapped [from DEPT]

配置文件如下：

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC

        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="cn.lex.entity">

    <class name="Dept" table="DEPT">

        <id name="deptno" column="deptno">

            <generator class="native"/>

        </id>

        <property name="dname"></property>

        <property name="loc"></property>

    </class>

</hibernate-mapping

>

代码如下：

package cn.lex.test;

import cn.lex.entity.Dept;

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import java.util.List;

/**

 * Created by accp on 2017/1/9.

 */

public class SecondTest {

    Session session;

    Transaction tx;

    @Before

    public void before(){

        Configuration cfg=new Configuration().configure();

        SessionFactory factory=cfg.buildSessionFactory();

        session=factory.openSession();

        tx=session.beginTransaction();

    }

    @Test

    public void page(){

        String hql="from DEPT order by DEPTNO";

        //创建query对象

       Query query = session.createQuery(hql);

       //每页显示几条数据

       int pageSize=;

       //设置第一页

        int pageIndex=;

       //设置每页显示的最大记录数

       query.setMaxResults(pageSize);

       //设置从第几条开始输出

       query.setFetchSize((pageIndex-)*pageSize);

        List<Dept> list = query.list();

        for (Dept dept:list) {

            System.out.println("部门编号："+dept.getDeptno());

        }

    }

    @After

    public void after(){

        tx.commit();

        session.close();

    }

}

而出现这个错误的根本原因是hql语法里面是POJO（Plain Ordinary Java Object）对象而不是table.所以改成这样就可以了：

List<Dept> list=session.createQuery("from Dept order by DEPTNO”).list();