hibernate继承类如何建立多对一，一对多的双向关联？

Question

<hibernate-mapping
>
    <class
        name="B1
        table="table_b1"
        dynamic-update="true"
        dynamic-insert="true"
        optimistic-lock="version"
    >        <id
            name="id"
            column="account_id"
            type="java.lang.Integer"
        >
            <generator class="sequence">
                <param name="sequence">oracle_sequence</param> 
            </generator>
        </id> <set name="weighs"
        lazy="true"
                     inverse="true"
                    cascade="none"
>
<key column="account_id">

</key>
<one-to-many class="A1"/>
</set>    </class></hibernate-mapping>
====================================
貌似你的A.xml里的many-to-one漏了个class的属性

Answer 1

上面set里name属性值是B1里保存所有A1的集合的成员变量的名称。

Answer 2

<subclass name="A1" discriminator-value="0" >
<subclass name="A2" discriminator-value="0" >
两句有问题，感兴趣的话来QQ群15292374来聊啊，具体解决
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