今天初学了hiberate的基本使用，做了一个简单的demo
需要注意点如下：
1. 创建任意java项目，然后点击右键，添加hiberate组件
2. 配置数据库，本人使用mysql, url, username, password, etc
3. 在pakage model下，增加实体类User
4. 在User同级目录下编写User.hbm.xml配置文件
5. 生成HibernateUtil类
6. 编写HibernateDemo类，获得session, 开始session.beginTransaction()
session.save(user)
session.commit(), 提交到数据库
详见相关代码
User.java
package model;/** * @author sean * * */public class User { private Long id; private String name; private Long age; public User() { } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Long getAge() { return age; } public void setAge(Long age) { this.age = age; }}
hibernate.cfg.xml
<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><!-- Generated by MyEclipse Hibernate Tools. --><hibernate-configuration> <session-factory> <property name="connection.username">root</property> <property name="connection.url">jdbc:mysql://localhost:3306/hello</property> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <property name="myeclipse.connection.profile">mysql</property> <property name="connection.password">root</property> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <mapping resource="model/User.hbm.xml"/> </session-factory></hibernate-configuration>
User.hbm.xml
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="model.User" table="T_USER"> <id name="id" column="id"> <generator class="native"/> </id> <property name="name" column="name"/> <property name="age" column="age"/> </class> </hibernate-mapping>
HibernateUtils
import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;import org.hibernate.classic.Session;/** * @author sean * * */public class HibernateUtil { private static SessionFactory sessionFactory; static{ sessionFactory = new Configuration().configure().buildSessionFactory(); } public static Session getSessionFactory(){ return sessionFactory.openSession(); } public static void shutdown(){ getSessionFactory().close(); }}
HibernateDemo
import model.User;import org.hibernate.Transaction;import org.hibernate.classic.Session;/** * @author sean * * @since 2009/06/02 * */public class HibernateDemo { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub User user = new User(); user.setName("sean"); user.setAge(new Long(33)); Session session = HibernateUtil.getSessionFactory(); Transaction tx = session.beginTransaction(); session.save(user); tx.commit(); session.close(); System.out.println("新增资料，查看数据库"); HibernateUtil.shutdown(); }}
