hibernate一对一详解

<?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="com.hibernate.c_onetoone"> ???????<class name="IdCard" table="t_card"> ???????<id name="id" ?> ????????<generator class="native"/> ????</id> ???????????<property name="number"/> ???????<many-to-one name="person" class="Person" column="pserson_id" unique="true"></many-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 package="com.hibernate.c_onetoone"> ???????<class name="Person" table="t_person"> ???????<id name="id" ?> ????????<generator class="native"/> ????</id> ???????????<property name="name"/> ???????<one-to-one name="idCard" ></one-to-one> ???</class> ???</hibernate-mapping>

public class Person { ???int id; ???String name; ???IdCard idCard; ???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; ???} ???public IdCard getIdCard() { ???????return idCard; ???} ???public void setIdCard(IdCard idCard) { ???????this.idCard = idCard; ???} ???@Override ???public String toString() { ???????return "Person [id=" + id + ", name=" + name + "]"; ???} ???}

public class IdCard { ???int id; ???String number; ???Person person; ???public int getId() { ???????return id; ???} ???public void setId(int 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; ???} ???@Override ???public String toString() { ???????return "IdCard [id=" + id + ", number=" + number + "]"; ???}}

public class APP { ???static SessionFactory sessionFactory=null; ???static{ ???????sessionFactory =new Configuration().configure().addClass(Person.class).addClass(IdCard.class).buildSessionFactory(); ???} ???@Test ???public void setApp() { ???????Session sess= sessionFactory.openSession(); ???????Transaction ts=null; ???????// ???????ts=sess.beginTransaction(); ???????Person person1=new Person(); ???????person1.setName("p1"); ???????IdCard idCard1=new IdCard(); ???????idCard1.setNumber("000001"); ???????Person person2=new Person(); ???????person2.setName("p2"); ???????IdCard idCard2=new IdCard(); ???????idCard2.setNumber("000002"); ???????Person person3=new Person(); ???????person3.setName("p3"); ???????IdCard idCard3=new IdCard(); ???????idCard3.setNumber("000002"); ???????// ???????person1.setIdCard(idCard1); ???????person2.setIdCard(idCard2); ???????person3.setIdCard(idCard3); ???????idCard1.setPerson(person1); ???????idCard2.setPerson(person2); ???????idCard3.setPerson(person3); ???????// ???????sess.save(person1); ???????sess.save(idCard1); ???????sess.save(person2); ???????sess.save(idCard2); ???????sess.save(person3); ???????sess.save(idCard3); ???????ts.commit(); ???????sess.close(); ???}