1.首先建立一个java项目或者jsp动态网页项目
将Hibernate4\Hibernate4\hibernate-release-4.3.11.Final\hibernate-release-4.3.11.Final\lib\required文件夹下的10个jar包导入项目中&＃xff0c;再将mySQL的驱动包导入并Build Path
2.再将Hibernate的核心配置文件hibernat.cfg.xml导入src文件夹下
并修改配置文件
xml version&＃61;&＃39;1.0&＃39; encoding&＃61;&＃39;utf-8&＃39;?>
DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration><session-factory><property name&＃61;"connection.driver_class">com.mysql.jdbc.Driverproperty><property name&＃61;"connection.url">jdbc:mysql://localhost:3306/hibernate_demo02property><property name&＃61;"connection.username">rootproperty><property name&＃61;"connection.password">123456property><property name&＃61;"dialect">org.hibernate.dialect.MySQL5Dialectproperty><property name&＃61;"show_sql">trueproperty><property name&＃61;"hbm2ddl.auto">updateproperty><mapping resource&＃61;"com/oracle/model/Person.hbm.xml"/>session-factory>hibernate-configuration>
倒数第三行的mapping标签为映射&＃xff0c;映射model层中某一个类所对应的xml配置文件&＃xff0c;并且采用地址的形式&＃xff0c;resource&＃61;“../../../xxx.hbm.xml" &＃xff08;是斜杠不是点&＃xff09;
3.创建HibernateUtil
package com.oracle.util;import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;public class HibernateUtil {private static final SessionFactory sessionFactory&＃61;buildSessionFactory();private static SessionFactory buildSessionFactory(){Configuration configuration&＃61;new Configuration().configure(); //实例化配置文件ServiceRegistry serviceRegistry&＃61;new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build(); //实例化服务登记return configuration.buildSessionFactory(serviceRegistry); //获取Session工厂
}public static SessionFactory getSessionFactory(){return sessionFactory;}
}
4.开始创建model层表结构
首先是一个Person类
package com.oracle.model;import java.util.HashSet;
import java.util.Set;public class Person {private Integer id;private String realName;private String sex;public Person() {super();}public Integer getId() {return id;}public void setId(Integer id) {this.id &＃61; id;}public String getRealName() {return realName;}public void setRealName(String realName) {this.realName &＃61; realName;}public String getSex() {return sex;}public void setSex(String sex) {this.sex &＃61; sex;}public Set
}
然后创建Person对应的xml配置文件Person.hbm.xml&＃xff0c;该文件的路径必须被写入核心配置文件中的mapping标签中&＃xff0c;否则将无法映射
xml version&＃61;"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&＃61;"com.oracle.model"> <class name&＃61;"Person" table&＃61;"t_person"><id name&＃61;"id" column&＃61;"id"><generator class&＃61;"native">generator>id><property name&＃61;"realName" column&＃61;"real_name" length&＃61;"30">property><property name&＃61;"sex" column&＃61;"sex" length&＃61;"10">property>class>
hibernate-mapping>
package com.oracle.service; 运行之前必须现在SQLyog中创建hibernate.cfg.xml中对应的数据库&＃xff0c;此例中为hibernate_demo02 然后直接运行程序&＃xff0c;如果没有表&＃xff0c;则会逆向由java实体自动创建一张数据库表
5.测试
创建测试类
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;public class Demo {public static void main(String[] args) {//首先实例化核心配置文件hibernate.cfg.xmlConfiguration configuration&＃61;new Configuration().configure();//实例化服务登记&＃xff0c;&＃xff0c;复制粘贴ServiceRegistry serviceRegistry&＃61;new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build(); //创建Session工厂SessionFactory sessionFactory&＃61;configuration.buildSessionFactory(serviceRegistry); Session session&＃61;sessionFactory.openSession(); //生成一个sessionsession.beginTransaction(); //开启事务//先运行程序&＃xff0c;生产数据库表
session.getTransaction().commit(); //提交事务session.close(); //关闭sessionsessionFactory.close(); //关闭session工厂
}}
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