Hibernate一对多异常问题(在线等)

Question

Order.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
    
<hibernate-mapping>
<!-- 
    Created by the Middlegen Hibernate plugin 2.1    http://boss.bekk.no/boss/middlegen/
    http://www.hibernate.org/
--><class 
    name="com.jacshan.domain.Order" 
    table="goodsimportbill"
>    <id
        name="id"
        type="java.lang.Integer"
        column="id"
    >
        <generator class="native" />
    </id>    <property
        name="billId"
        type="int"
        column="billID"
        not-null="true"
        unique="true"
        length="11"
    />
    <property
        name="sendPerson"
        type="java.lang.String"
        column="sendPersons"
        length="100"
    />
    <property
        name="inceptPerson"
        type="java.lang.String"
        column="inceptPersons"
        length="100"
    />
    <property
        name="totalPrice"
        type="java.lang.Float"
        column="totalPrice"
        length="12"
    />
    <property
        name="importTime"
        type="java.sql.Timestamp"
        column="importTime"
        length="19"
    />
    <property
        name="payTime"
        type="java.sql.Timestamp"
        column="payTime"
        length="19"
    />
    <property
        name="confirm"
        type="java.lang.Integer"
        column="confirm"
        length="11"
    />    <!-- Associations -->
  
    <!-- bi-directional one-to-many association to Goodsimportitem -->
    <set
        name="item"
        lazy="false"
        inverse="true"
cascade="none"
    >
        <key>
            <column name="orderId" />
        </key>
        <one-to-many 
            class="com.jacshan.domain.Item"
        />
    </set></class>
</hibernate-mapping>Item.hbm.xml<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
    
<hibernate-mapping>
<!-- 
    Created by the Middlegen Hibernate plugin 2.1    http://boss.bekk.no/boss/middlegen/
    http://www.hibernate.org/
--><class 
    name="com.jacshan.domain.Item" 
    table="goodsimportitem"
>    <id
        name="id"
        type="java.lang.Integer"
        column="id"
    >
        <generator class="native" />
    </id>    <property
        name="goodsId"
        type="java.lang.String"
        column="goodsID"
        not-null="true"
        length="40"
    />
    <property
        name="goodsName"
        type="java.lang.String"
        column="goodsName"
        length="100"
    />
    <property
        name="importAmount"
        type="java.lang.Integer"
        column="importAmount"
        length="11"
    />
    <property
        name="importUnitPrice"
        type="java.lang.Float"
        column="importUnitPrice"
        length="12"
    />
    <property
        name="createPerson"
        type="java.lang.String"
        column="createPerson"
        length="20"
    />
    <property
        name="createTime"
        type="java.sql.Timestamp"
        column="createTime"
        length="19"
    />    <!-- Associations -->
  
    <!-- bi-directional many-to-one association to Goodsimportbill -->
    <many-to-one
        name="order"
        class="com.jacshan.domain.Order"
        not-null="true"
    >
        <column name="orderId" />
    </many-to-one></class>
</hibernate-mapping>
难道是我的映射文件写的有问题?

Answer 1

问题解决了,增加spring的事务管理就好了