hibernate单向一对一

分两类，主键一一对应，如一个人对应一张身份证。person(personId) —– identificationCard(cardId)。personId和
cardId都用id命名。
1.建表

CREATE TABLE person (
   id INT NOT NULL,
   name VARCHAR(100),
   age INT,
   CONSTRAINT `PRIMARY` PRIMARY KEY (id)
);
CREATE TABLE identificationCard(
   id INT NOT NULL unique,
   cardNo varchar(19),
   foreign key(id) references person(id)
);

2.建model
2.1主表Person
    @OneToOne(cascade = CascadeType.ALL, mappedBy = “person”)
   public IdentificationCard getIdentificationCard() {
       return identificationCard;
   }
   public void setIdentificationCard(IdentificationCard identificationCard) {
       this.identificationCard = identificationCard;
   }

2.2从表identificationCard
    @OneToOne(cascade = CascadeType.ALL)
   @PrimaryKeyJoinColumn
   public Person getPerson() {
       return this.person;
   }

   public void setPerson(Person person) {
       this.person = person;
   }

3.测试

package test1.r1;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import test1.model.IdentificationCard;
import test1.model.Person;

public class HibernateOne2One12 {
   public static void main(String[] args) {
       System.out.println(“开始事务”);
       Configuration config = new Configuration().configure();
       SessionFactory sessionFactory = config.buildSessionFactory();
       Session session = sessionFactory.openSession();
       try {
           Transaction tx = session.beginTransaction();

           Person p1 = new Person(“bkd1”, 26);
           IdentificationCard ic1 = new IdentificationCard();
           ic1.setCardNo(“2009”);
           ic1.setPerson(p1);
           session.save(ic1);
           tx.commit();
       } catch (HibernateException e) {
           e.printStackTrace();
           session.getTransaction().rollback();
       } finally {
           session.close();
           sessionFactory.close();
       }
       System.out.println(“事务结束”);
   }
}