t2一对一，外键引用

<?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> <class name="com.tudou.hibernates.entity.Account" table="tb_account"> <id name="id" type="java.lang.Integer"> <generator class="native" /> </id> <property name="userName"></property> <property name="password"></property> <property name="isAct"></property> <!-- 一对一此处级联使用all同步更新 左外连接--> <one-to-one name="address" class="com.tudou.hibernates.entity.Address" cascade="all" outer-join="true"></one-to-one> </class> </hibernate-mapping>
<?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> <class name="com.tudou.hibernates.entity.Address" table="tb_address"> <id name="id" type="java.lang.Integer"> <generator class="foreign"> <param name="property">account</param> </generator> </id> <property name="addressName" /> <property name="postZip"></property> <property name="tel"></property> <!-- 一对一constrained="true"明确tb_address的主键参考account的id --> <one-to-one name="account" class="com.tudou.hibernates.entity.Account" constrained="true"></one-to-one> </class> </hibernate-mapping>