hibernate 基于外键的1-1

public class Wife {
 private Long id;
 private String name;
 private Husband husband; 
public class Husband {
 private Long id;
 private String name;
 private Wife wife; 
 
外键保存在husband的表中
 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
    "​​​http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd​​"><hibernate-mapping>
 <class name="hiber.Wife" table="wife">
  <id name="id" type="java.lang.Long"> 
   <column name="ID" scale="0" />
   <!-- The generator-class attribute of @hibernate.id is deprecated, use the @hibernate.generator tag instead -->
   <generator class="increment">
   </generator>
  </id>
  
  <property name="name" type="java.lang.String" >
   <column name="name" length="255"></column>
  </property>
  <one-to-one name="husband" property-ref="wife"></one-to-one>
 </class>
 
 <class name="hiber.Husband" table="Husband">
  <id name="id" type="java.lang.Long"> 
   <column name="ID" scale="0" />
   <!-- The generator-class attribute of @hibernate.id is deprecated, use the @hibernate.generator tag instead -->
   <generator class="increment">
   </generator>
  </id>
  
  <property name="name" type="java.lang.String" >
   <column name="name" length="255"></column>
  </property>
  <many-to-one name="wife" class="hiber.Wife" lazy="false" unique="true"  not-null="true" cascade="all" >
   <column name="wife_id" scale="0" />
  </many-to-one>
 </class></hibernate-mapping>
 
 
测试：
 Wife wife = new Wife();
  Husband husband = new Husband();
  wife.setName("wife777");
  husband.setName("husband777");
  husband.setWife(wife);
//  wife.setHusband(husband);
  sph.save(wife);
  sph.save(husband); 
//进行访问
  Wife wife1 = sph.get(4l);
  System.out.println(wife1.getName()+":"+wife1.getHusband().getName());
  
  Husband husband1 = sph.getHusband(3l);
  System.out.println(husband1.getName()+":"+husband1.getWife().getName());