Hibernate一对多双向关系错，望高手详解

Question

<many-to-one name="prjInf" column="PRJ_ID" class="PrjInf"
cascade="none" not-null="false"/>
这个应该是配置UserInf吧

Answer 1

撇开HIBERNATE，请问楼主把 one-to-many 的关系搞懂了没有？

Answer 2

<many-to-one name="prjInf" column="PRJ_ID" class="PrjInf"
cascade="none" not-null="false"/>
这个写多了

Answer 3

晕，写多了，本来一大堆的，打算拆一点出来，拆错了....不好意思耽误大家时间了，是这样的============================================<hibernate-mapping package="com.mypack">
<class name="UserInf" table="user_inf">
<meta attribute="sync-DAO">false</meta>
<id name="userId" type="integer" column="USER_ID"
unsaved-value="null">
<generator class="native" />
</id>
<property name="userNm" column="USER_NM" type="string"
not-null="false" length="32" /><property name="userPsw" column="USER_PSW" type="string"
not-null="false" length="32" /><property name="roleTypeCode" column="ROLE_TYPE_CODE"
type="string" not-null="false" length="2" /><set name="prjInfs" cascade="delete" inverse="true">
<key column="CST_ID" />
<one-to-many class="PrjInf" />
</set>
</class>
</hibernate-mapping>==========================================<hibernate-mapping package="com.mypack">
<class name="PrjInf" table="prj_inf">
<meta attribute="sync-DAO">false</meta>
<id name="prjId" type="integer" column="PRJ_ID">
<generator class="native" />
</id> <property name="prjNm" column="PRJ_NM" type="string"
not-null="false" length="32" />
<property name="prjStartupDate" column="PRJ_STARTUP_DATE" type="date"
not-null="false" length="10" />
<property name="prjStartupTime" column="PRJ_STARTUP_TIME" type="time"
not-null="false" length="8" />
<property name="prjVisibility" column="PRJ_VISIBILITY" type="string"
not-null="false" length="1" />
<property name="prjFee" column="PRJ_FEE" type="java.lang.Double"
not-null="false" length="22" />
<property name="prjDescription" column="PRJ_DESCRIPTION"
type="string" not-null="false" length="512" />
<property name="prjStat" column="PRJ_STAT" type="string"
not-null="false" length="1" /> <many-to-one name="userInf" column="USER_ID" class="UserInf"
cascade="none" not-null="false"/>
</hibernate-mapping>

Answer 4

<set name="prjInfs" cascade="delete" inverse="true">
<key column="CST_ID" /> =>>这里是"CST_ID"
<one-to-many class="PrjInf" />
</set><many-to-one name="userInf" column="USER_ID" class="UserInf" =>>怎么这里是“USER_ID"
cascade="none" not-null="false"/>

Answer 5

但是CST_ID我是用做对应到USER_INF表USER_ID用的，仅是名称不同

Answer 6

<set name="prjInfs" cascade="delete" inverse="true">
<key column="CST_ID" />
<one-to-many class="PrjInf" />
</set><many-to-one name="userInf" column="USER_ID" class="UserInf"
cascade="none" not-null="false"/>这里面的 column 名字写反了
改成:
<key column="USER_ID /><many-to-one name="userInf" column="CST_ID" class="UserInf"
cascade="none" not-null="false"/>