035:一对一单向外键（Annotation方法）

来源：互联网发布：java序列化的作用编辑：程序博客网时间：2024/06/08 10:07

1、先建一个Husband.java和wife.java

在

public class Husband{

private int id;

private String name;

}

public class Wife{

private int id;

private String name;

}

2、数据库里建两个表Husband和wife

3、若使两个表关联，则可在Husband.java中添加private Wife wife;

package com.bjsxt.hibernate;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.OneToOne;import javax.persistence.Id;@Entitypublic class Husband {  private int id;  private String name;  private Wife wife;    @Id @GeneratedValue  public int getId() {return id;}public String getName() {return name;}@OneToOnepublic Wife getWife() {return wife;}public void setId(int id) {this.id = id;}public void setName(String name) {this.name = name;}public void setWife(Wife wife) {this.wife = wife;}}

package com.bjsxt.hibernate;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;@Entitypublic class Wife {   @Id   @GeneratedValue  private int id;  private String name;    public int getId() {return id;}public String getName() {return name;}  public void setId(int id) {this.id = id;}public void setName(String name) {this.name = name;}}

4、在hibernate.cdg.xml中：

加上这两个类：

<!--  <mapping resource="com/bjsxt/hibernate/Student.hbm.xml"/> -->    <mapping class="com.bjsxt.hibernate.Husband"/>    <mapping class="com.bjsxt.hibernate.Wife"/>

0 0