hibernate双向一对一
package com.bjsxt.hibernate.oneToOne;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import com.bjsxt.hibernate.oneToOne.PersonInfo;
@Entity
public class Person {
private int id;
private String name;
private String password;
private PersonInfo personInfo;
@Id
@GeneratedValue
public int getId() {
return id;
}
@Override
public String toString() {
return "Person [id=" + id + ", name=" + name + ", password=" + password
+ ", PersonInfo=" + personInfo + "]";
}
public Person(int id, String name, String password,
com.bjsxt.hibernate.oneToOne.PersonInfo personInfo) {
super();
this.id = id;
this.name = name;
this.password = password;
this.personInfo = personInfo;
}
public Person( String name, String password,
com.bjsxt.hibernate.oneToOne.PersonInfo personInfo) {
super();
this.name = name;
this.password = password;
this.personInfo = personInfo;
}
public void setId(int id) {
this.id = id;
}
public Person() {
super();
// TODO Auto-generated constructor stub
}
public String getName() {
return name;
}
@OneToOne(cascade=CascadeType.ALL,fetch=FetchType.EAGER)
@JoinColumn(name="personInfo")
public PersonInfo getPersonInfo() {
return personInfo;
}
public void setPersonInfo(PersonInfo personInfo) {
this.personInfo = personInfo;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}package com.bjsxt.hibernate.oneToOne;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
@Entity
public class PersonInfo {
private int id;
private String name;
private int age;
private Person person;
@OneToOne(mappedBy="personInfo",cascade=CascadeType.ALL)
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
public PersonInfo( String name, int age) {
super();
this.name = name;
this.age = age;
}
public PersonInfo(int id, String name, int age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
public PersonInfo() {
super();
// TODO Auto-generated constructor stub
}
public int getAge() {
return age;
}
@Id
@GeneratedValue
public int getId() {
return id;
}
public String getName() {
return name;
}
public void setAge(int age) {
this.age = age;
}
public void setId(int id) {
this.id = id;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "PersonInfo [id=" + id + ", name=" + name + ", age=" + age + "]";
}
}package com.bjsxt.hibernate;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.junit.BeforeClass;
import com.bjsxt.hibernate.oneToOne.Person;
import com.bjsxt.hibernate.oneToOne.PersonInfo;
public class OneToOneTest {
private static SessionFactory sessionFactory;
@BeforeClass
public static void beforeClass() {
new SchemaExport(new AnnotationConfiguration().configure()).create(false, true);
sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
}
public static void main(String[] args) {
//AddPerson();
//getPerson();
//delPerson();
updatePerson();
}
public static void getPerson(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
Person person=(Person) session.get(Person.class, 1);
System.out.println(person.toString());
session.getTransaction().commit();
}
public static void delPerson(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
Person person=(Person) session.get(Person.class, 1);
session.delete(person);
System.out.println(person.toString());
session.getTransaction().commit();
}
public static void updatePerson(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
Person person=(Person) session.get(Person.class, 2);
//先get数据，不写session.update(person)数据库也更新了记录
person.setName("王五");
//级联的数据直接修改，也不用update，hibernate自动完成修改
PersonInfo personInfo=person.getPersonInfo();
personInfo.setName("王五");
System.out.println(person.toString());
session.getTransaction().commit();
}
public static void AddPerson(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
PersonInfo personInfo=new PersonInfo( "张三", 23);
Person person=new Person("张三", "2", personInfo);
personInfo.setPerson(person);
//session.save(personInfo);
session.save(person);
session.getTransaction().commit();
}
public static void delPersonByPersonInfo(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
Person person=(Person) session.get(Person.class, 2);
session.delete(person.getPersonInfo());
System.out.println(person.toString());
session.getTransaction().commit();
}
public static void AddPersonByPersonInfo(){
sessionFactory=new AnnotationConfiguration().configure().buildSessionFactory();
Session session=sessionFactory.getCurrentSession();
session.beginTransaction();
PersonInfo personInfo=new PersonInfo( "张三", 23);
Person person=new Person("张三", "2", personInfo);
personInfo.setPerson(person);
session.save(personInfo);
//session.save(person);
session.getTransaction().commit();
}
}本文出自 “matengbing” 博客，请务必保留此出处http://matengbing.blog.51cto.com/11395502/1876719
原文：http://matengbing.blog.51cto.com/11395502/1876719