hibernate一对多级联保存报错
一方：  
<id   name= "collectId "   type= "java.lang.Long ">  
<column   name= "COLLECT_ID "   precision= "10 "   scale= "0 "   />  
<generator   class= "sequence ">  
<param   name= "sequence "> SQ_TOGE_ADDRESS_COLL_ID </param>  
</generator>  
</id>

<bag   name= "addressGroups "   cascade= "all "   inverse= "true "   lazy= "true ">  
<key   column= "COLLECT_ID "> </key>  
<one-to-many   class= "TogeAddressGroup "/>  
</bag>

多方：  
<id   name= "groupId "   type= "java.lang.Long ">  
<column   name= "GROUP_ID "   precision= "10 "   scale= "0 "   />  
<generator   class= "sequence ">  
<param   name= "sequence "> SQ_TOGE_ADDRESS_GROUP_ID </param>  
</generator>  
</id>

<many-to-one   name= "togeAddressColl "   column= "COLLECT_ID "   class= "TogeAddressColl "> </many-to-one>

其中多方主键的setter，getter方法  
private   Long   groupId;  
public   Long   getGroupId()   {  
return   this.groupId;  
}  
public   void   setGroupId(Long   groupId)   {  
this.groupId   =   groupId;  
}

错误：  
ERROR   org.hibernate.property.BasicPropertyAccessor   -   IllegalArgumentException   in   class:   com.TogeAddressGroup,   getter   method   of   property:   groupId

数据库是oracle，主键的id均为number（10，0）  
向各位请教


------解决方案--------------------
你还是吧2个表的SQL, XML, 类 都贴出来吧! 可能会有人帮你解决!

一对多联级不应该用many-to-one吧,这个不是一对一唯一外键关联时用的吗?

单向一对多关联:
例如: 一个用户可能存在多个地址. 在用户类中 用Set类型定义用户地址.
主控方XML: <set name= "addresses " table= "被控方表名 " cascade= "all " order-by= "被控方某列 ">
<key column= "主控方 '一 '关系的列名,如user_id "> </key>
<one-to-many class= "被控方类名 "/> 在one-to-many关系中, 将many设置成主控方inverse= "false "可以提高性能.


不知道能不能帮到你!