在上一篇博客内容的基础上做了以下修改，即可实现。
注解方式：
package com.bjsxt.hibernate;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
@Entity
public class Wife {
private int id;
private String name;
private Husband husband;
@OneToOne(mappedBy="wife")//加上后边括号内容可以防止生成多余的键字段，表示husband中的哪个字段已经做了映射，只要和其关联即可。
public Husband getHusband() {
return husband;
}
public void setHusband(Husband husband) {
this.husband = husband;
}
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
xml方式:
在Student类中也要添加private StuIdCard stuIdCard属性，然后在上一篇博客的基础上修改以下内容
Student.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>
<class name="com.bjsxt.hibernate.Student" dynamic-update="true">
<id name="id">
<generator class="native"></generator>
</id>
<property name="name"></property>
<property name="age" />
<property name="sex" />
<property name="good" type="yes_no"></property>
<one-to-one name="stuIdCard" property-ref="student"></one-to-one>
</class>
</hibernate-mapping>
