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hibernate学习2_简单hibernate实现
本文通过java工程+hibernate简单实现了一个hibernate持久化java对象到mysql数据库的功能。
1、工程配置
2、数据库连接配置文件hibernate.cfg.xml
<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.djl.test"> <class name="Student" table="student"> <id name="id" column="ID"> </id> <property name="name" column="name" type="string"/> <property name="age" column="age" type="integer"/> </class></hibernate-mapping>
3、新建对应java实体Student.java
package com.djl.test;public class Student { private int id; public int getId() { return id; } public void setId(int id) { this.id = id; } private String name; private int age; 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; } }
4、建立实体与数据库对应映射关系 student.hbm.xml
<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.djl.test"> <class name="Student" table="student"> <id name="id" column="ID"> </id> <property name="name" column="name" type="string"/> <property name="age" column="age" type="integer"/> </class></hibernate-mapping>
5、简单测试程序进行调用
package com.djl.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class MainTest { public static void main(String... args){ Student stu = new Student(); stu.setId(0); stu.setAge(20); stu.setName("wangshan"); Configuration config = new Configuration(); config.configure(); SessionFactory factory = config.buildSessionFactory(); Session session = factory.openSession(); session.beginTransaction(); session.save(stu); session.getTransaction().commit(); session.close(); factory.close(); }}
运行结果
hibernate学习2_简单hibernate实现
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