hibernate多对一的关系，配置问题

问题描述

hibernate问题:         如果有两张表分别是userinfo和groupinfo    userinfo(userId,userName,deptId) groupinfo(groupId,groupName)  ,userinfo里面deptId和groupinfo的groupId是主外键关系。    那么user.hbm.xml和groupinfo.hbm.xml应该怎么配置。我只要取userinfo就可以取到groupName的值.以下是我的配置，现在可以运行正常   但就是取不到groupName的值。请问应该怎么配置？？？   userinfo============================================================<hibernate-mapping package="org.materialManager.model">    <class name="UserInfo" table="UserInfo" schema="dbo" catalog="Material">        <id name="userId" type="integer">            <column name="userId">            <generator class="increment">        </id>   <many-to-one name="groupinfo" class="GroupInfo" outer-join="true" fetch="select">            <column name="deptId">        </many-to-one>             <property name="userName" type="string">            <column name="userName" length="50" not-null="true">        </property>    </class> Groupinfo=============================<hibernate-mapping package="org.materialManager.model">    <class name="GroupInfo" table="GroupInfo" schema="dbo" catalog="Material">        <id name="groupId" type="integer">            <column name="groupId">            <generator class="increment">        </id>        <property name="groupName" type="string">            <column name="groupName" length="50" not-null="true">        </property>        <set name="userInfos">            <key>                <column name="deptId">            </key>            <one-to-many class="UserInfo">        </set>    </class></hibernate-mapping>

解决方案

<many-to-one name="groupinfo" class="GroupInfo" outer-join="true" fetch="select" lazy="false"> <column name="deptId" /></many-to-one>然后userinfo.getGroupinfo().getGroupname()