5.hibernate一对一单向外键关联,xml映射

学生与校园卡模型

最新推荐文章于 2025-03-27 16:42:40 发布

原创最新推荐文章于 2025-03-27 16:42:40 发布 · 129 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#hibernate #一对一 #单向关联 #xml映射

hibernate 专栏收录该内容

22 篇文章

订阅专栏

本文介绍了使用Hibernate框架实现的学生信息及校园卡信息的关联映射。通过定义Java实体类Student和StuIdCard，以及相应的Hibernate配置文件，实现了学生与校园卡的一对一关联关系。

stuidcard表结构:
[img]http://dl.iteye.com/upload/attachment/592486/23e8c03e-cd00-32c8-bdbd-648e121f0368.jpg[/img]
student表结构:
[img]http://dl.iteye.com/upload/attachment/592482/69edd4cf-d893-31d7-ad69-354817d54091.jpg[/img]


package com.bjsxt.hibernate;

public class StuIdCard {
	private int id;
	private String num;
	private Student student;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getNum() {
		return num;
	}
	public void setNum(String num) {
		this.num = num;
	}
	public Student getStudent() {
		return student;
	}
	public void setStudent(Student student) {
		this.student = student;
	}

}


package com.bjsxt.hibernate;

public class Student {

	private int id;
	private String name;

	private int age;
	private String sex;
	private boolean good;
	public boolean isGood() {
		return good;
	}
	public void setGood(boolean good) {
		this.good = good;
	}
	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 int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}



}


<?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>
	<class name="com.bjsxt.hibernate.StuIdCard">
		<id name="id">
			<generator class="native"></generator>
		</id>

		<property name="num"/>
		<many-to-one name="student" column="studentId" 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>
	<class name="com.bjsxt.hibernate.Student" dynamic-update="true">
		<id name="id">
			<generator class="native"></generator>
		</id>

		<property name="name"></property>
		<property name="age" />
		<property name="sex" />
		<property name="good" type="yes_no"></property>
    </class>

</hibernate-mapping>