使用外键关联的一对一映射hibernate

Question

class Employee{
String name;
int id;
Address addr;
//getter and setter methods
}

class Address{
String state;
String city
}

<hibernate-mapping>
<class name="Employee" table="emp">
<id name="id" column="id">
<generator class="assigned"/>
</id>
<property name="name" column="emp_name"/>
<one-to-one name="addr" class="Address" foreign-key="addr_id" cascade="all"/>
</class>

<!--mapping for Address Entity-->
<class name="Address" table="address>
<property name="city"/>
<property name"state"/>
</class>
</hibernate-mapping>

Answer 1

更改映射。您需要完全限定类名并指示join column，它是Employee的PK，columnid。

员工

<class name="Employee" table="emp">
<id name="id" column="id">
<generator class="assigned"/>

地址实体必须引用员工的PK，在您的情况下为id:

 <one-to-one name="addr" class="my.package.Employee"
                   unique="true" not-null="true" cascade="all"/>