1）建立Person类：

public class Person {private Integer id;private String name;private IdCard IdCard;public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public IdCard getIdCard() {return IdCard;}public void setIdCard(IdCard card) {this.IdCard = card;}@Overridepublic String toString() {return "Person [id=" + id + ",name=" + name + "]";}
}

2）建立IdCard类：

 public class IdCard {private Integer id;private String number;private Person person;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getNumber() {return number;}public void setNumber(String number) {this.number = number;}public Person getPerson() {return person;}public void setPerson(Person person) {this.person = person;}@Overridepublic String toString() {return "IdCard [id=" + id + ",number=" + number + "]";}
}

3）建立持久化类：

public class perAndIdDao {/*** save方法*/@Testpublic void testSave() {Session session = SessionFactoryTools.getSession();Transaction tx = null;try {tx = session.beginTransaction();// ===============================================// 新建两个Person对象Person person1 = new Person();person1.setName("张三");Person person2 = new Person();person2.setName("李四");// 新建两个IdCard对象IdCard idCard1 = new IdCard();idCard1.setNumber("37292501");IdCard idCard2 = new IdCard();idCard2.setNumber("37292502");// 加入关联对象person1.setIdCard(idCard1);person2.setIdCard(idCard2);idCard1.setPerson(person1);idCard2.setPerson(person2);// 保存session.save(person1);session.save(person2);session.save(idCard1);session.save(idCard2);// ===============================================tx.commit();} catch (RuntimeException e) {if (tx != null) {tx.rollback();}throw e;} finally {session.close();}}/*** getById方法*/@Testpublic void testGetById() {Session session = SessionFactoryTools.getSession();Transaction tx = null;try {tx = session.beginTransaction();// ===============================================// 获取person队象并打印改队象的信息和相关联的idCard信息Person person = (Person) session.get(Person.class, 1);System.out.println(person + ":");System.out.println(person.getIdCard());// 获取idCard对象并打印改队象的信息和相关联的person信息IdCard idCard = (IdCard) session.get(IdCard.class, 2);System.out.println(idCard + ":");System.out.println(idCard.getPerson());// ===============================================tx.commit();} catch (RuntimeException e) {if (tx != null) {tx.rollback();}throw e;} finally {session.close();}}/*** 解除关联关系的方法*/@Testpublic void testRemoveRelation() {Session session = SessionFactoryTools.getSession();Transaction tx = null;try {tx = session.beginTransaction();// ===============================================/*** 获取person对象并将其关联的IdCard设置为空 在多对一中，* 因为一方不具有外键管理权。所以解除外键关联是不能实现的* Person person = (Person) session.get(Person.class, 1);* person.setIdCard(null);*//*** 获取idCard对象并将其相关联的person设置为空 在多对一中，* 因为多方具有外键的管理权限，所以该外键的解除是能够实现的*/IdCard idCard = (IdCard) session.get(IdCard.class, 1);idCard.setPerson(null);// ===============================================tx.commit();} catch (RuntimeException e) {if (tx != null) {tx.rollback();}throw e;} finally {session.close();}}/*** 删除队象的方法*/@Testpublic void testDelete() {Session session = SessionFactoryTools.getSession();Transaction tx = null;try {tx = session.beginTransaction();// ===============================================/*** 获取person对象并删除该对象* 在多对一中。因为一方不具有外键的管理权限。所以删除该对象是不可能实现的* Person person = (Person) session.get(Person.class, 1); * session.delete(person);*//*** 获取idCard对象并删除该对象* 在多对一中。因为多方具有外键爱你的管理权限，* 所以删除该对象是能够实现的*/IdCard idCard = (IdCard) session.get(IdCard.class, 1);session.delete(idCard);// ===============================================tx.commit();} catch (RuntimeException e) {if (tx != null) {tx.rollback();}throw e;} finally {session.close();}}
}

4）Person.hbm.xml的配置：

<?

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 package="map_3"> <!--类名：Person 类相应的表名：person 一对一相应类：IdCard 一对一相应的表：idCard 一对一所相应的外键的属性名：person --> <class name="Person" table="person"> <id name="id" type="int" column="id"> <generator class="native" /> </id> <property name="name" type="string" column="name" length="20" /> <one-to-one name="idCard" class="IdCard" property-ref="person"> </one-to-one> </class> </hibernate-mapping>

5）IdCard.hbm.xml的配置：

<?

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 package="map_3"> <!--类名：IdCard 类相应的表名：idCard 多对一相应类的表名：person 多对一相应的类名：Person 多对一相应的列名：personId 设置为一对一关系：unique="true" --> <class name="IdCard" table="idCard"> <id name="id" type="int" column="id"> <generator class="native" /> </id> <property name="number" type="string" column="number" /> <many-to-one name="person" class="Person" column="personId" unique="true"> </many-to-one> </class> </hibernate-mapping>

6) 主文件的配置：

<!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration><session-factory name="foo"><!-- 配置数据库信息 --><property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property><property name="connection.url">
jdbc:mysql:///hibernate0
</property><property name="connection.driver_class">
com.mysql.jdbc.Driver
</property><property name="connection.username">root</property><property name="hibernate.connection.password">root</property><!-- 其它配置 --><property name="hibernate.show_sql">false</property><property name="hibernate.format_sql">false</property><property name="hbm2ddl.auto">update</property><!-- 映射文件配置 --><mapping resource="map_3/Person.hbm.xml" /><mapping resource="map_3/IdCard.hbm.xml" /></session-factory>
</hibernate-configuration>