1.向表中插入一個欄位unit_id，然後回到modle類進行配置;

2.在modle裡面開始配置

brand:

private TbUnit tbUnit;get,set方法；

unit:

private Set<TsBrand> brands;get,set方法；
然後配置xml:
 TsBrand.hbn.xml:

<many-to-one name="tbUnit" column="unit_id" class="net.yasion.common.model.TbUnit" />
  TbUnit.hbm.xml:
<set name="brands" inverse="true" cascade="delete" where="(NOT(flag = 'D') OR flag IS NULL)">
<key>
<column name="unit_id">
   <comment>單位ID</comment>
</column>
</key>
<one-to-many class="com.yaheen.model.TsBrand" />
<set>

3.開啟頁面：

HTTP Status 500 - Request processing failed; nested exception is org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [net.yasion.common.model.TbUnit#]；

4.原因：