org.hibernate.MappingException:Unknown entity

迈不过友情╰ 2023-10-09 09:52 9阅读 0赞

转自：[https://www.cnblogs.com/jinjiyese153/p/6902785.html][https_www.cnblogs.com_jinjiyese153_p_6902785.html]

1.问题描述：

使用\*.hbm.xml文件进行hibernate测试时，运行报错如下：

![1140292-20170525110513091-732888847.png][]

2.解决方案

可能一：将\*.hbm.xml中的class标签中的name写为类所在路径。

错误时为：

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>&lt;</code> 
      <code>class</code>&nbsp; 
      <code>name=</code> 
      <code>"Student"</code>&nbsp; 
      <code>table=</code> 
      <code>"STUDENTS"</code> 
      <code>&gt;</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

修改后为：

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>&lt;</code> 
      <code>class</code>&nbsp; 
      <code>name=</code> 
      <code>"org.hibernate.model.Student"</code>&nbsp; 
      <code>table=</code> 
      <code>"STUDENTS"</code> 
      <code>&gt;</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

![1140292-20170525112235794-1963990765.png][]

可能二：可能是获取sessionFactory方式有问题

hibernate4.35之前sessionFactory获取方式

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> 
    <div>
      7 
    </div> 
    <div>
      8 
    </div> 
    <div>
      9 
    </div> 
    <div>
      10 
    </div> 
    <div>
      11 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>// 创建配置对象</code> 
     </div> 
     <div> 
      <code>Configuration config =&nbsp;</code> 
      <code>new</code>&nbsp; 
      <code>Configuration().configure();</code> 
     </div> 
     <div> 
      <code>// 创建服务注册对象（hibernate4.35之后该方法就不能再获取到实体信息了）</code> 
     </div> 
     <div> 
      <code>StandardServiceRegistry serviceRegistry =&nbsp;</code> 
      <code>new</code>&nbsp; 
      <code>StandardServiceRegistryBuilder()</code> 
     </div> 
     <div> 
      <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code> 
      <code>.applySettings(config.getProperties()).build();</code> 
     </div> 
     <div> 
      <code>// 创建会话工厂对象</code> 
     </div> 
     <div> 
      <code>sessionFactory = config.buildSessionFactory(serviceRegistry);</code> 
     </div> 
     <div> 
      <code>// 创建会话</code> 
     </div> 
     <div> 
      <code>session = sessionFactory.openSession();</code> 
     </div> 
     <div> 
      <code>// 开启事务</code> 
     </div> 
     <div> 
      <code>transaction = session.beginTransaction();</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

hibernate4.35之后sessionFactory获取方式

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>// 创建会话工厂对象</code> 
     </div> 
     <div> 
      <code>sessionFactory =&nbsp;</code> 
      <code>new</code>&nbsp; 
      <code>Configuration().configure().buildSessionFactory();</code> 
     </div> 
     <div> 
      <code>// 创建会话</code> 
     </div> 
     <div> 
      <code>session = sessionFactory.openSession();</code> 
     </div> 
     <div> 
      <code>// 开启事务</code> 
     </div> 
     <div> 
      <code>transaction = session.beginTransaction();</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

转载于:https://www.cnblogs.com/sharpest/p/11113894.html

[https_www.cnblogs.com_jinjiyese153_p_6902785.html]: https://www.cnblogs.com/jinjiyese153/p/6902785.html
[1140292-20170525110513091-732888847.png]: https://images2015.cnblogs.com/blog/1140292/201705/1140292-20170525110513091-732888847.png
[1140292-20170525112235794-1963990765.png]: https://images2015.cnblogs.com/blog/1140292/201705/1140292-20170525112235794-1963990765.png