Husband.java
package com.one2one.bean;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.Table;
@Entity
@Table(name="husband",catalog="Hibernate_One2One_fk")
public class Husband {
private int id;
private String name;
private Wife wife;
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.AUTO)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column(name="name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToOne(cascade=CascadeType.ALL,mappedBy="husband")
public Wife getWife() {
return wife;
}
public void setWife(Wife wife) {
this.wife = wife;
}
}
Wife.java
package com.one2one.bean;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.Table;
@Entity
@Table(name="wife",catalog="Hibernate_One2One_fk")
public class Wife {
private int id;
private String name;
private Husband husband;
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.AUTO)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column(name="name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToOne(cascade=CascadeType.ALL)
@JoinColumn(name="husband_id")
public Husband getHusband() {
return husband;
}
public void setHusband(Husband husband) {
this.husband = husband;
}
}
導出的sql
create table Hibernate_One2One_fk.husband (
id integer not null auto_increment,
name varchar(255),
primary key (id)
)
create table Hibernate_One2One_fk.wife (
id integer not null auto_increment,
name varchar(255),
husband_id integer,
primary key (id)
)
alter table Hibernate_One2One_fk.wife
add index FK37AF119039AEDD (husband_id),
add constraint FK37AF119039AEDD
foreign key (husband_id)
references Hibernate_One2One_fk.husband (id)
測試代碼
@Test
public void save(){
Session session=HibernateSessionFactory.getSession();
Transaction transaction=session.beginTransaction();
try {
transaction.begin();
Husband husband=new Husband();
husband.setName("張三");
session.save(husband);
Wife wife=new Wife();
wife.setName("如花");
wife.setHusband(husband);
session.save(wife);
transaction.commit();
} catch (HibernateException e) {
e.printStackTrace();
}
}
@Test
public void select(){
Session session=HibernateSessionFactory.getSession();
Husband husband=(Husband) session.get(Husband.class, 1);
System.out.println(husband.getName());
System.out.println(husband.getWife().getName());
}