关于Serializable接口：
Hibernate 并不要求持久化类必须实现java.io.Serializable接口，但是对于采用分布式结构的Java应用，当Java对象在不同的进程节点之间传输时，这个对象必须实现这个接口；如果希望对HttpSession中存放的Java对象进行持久化，那么这个Java对象必须实现Serializable接口。
关于不带参数的构造方法：
public Customers() { }
Hibernate要求持久化类必须提供一个不带参数的默认的构造方法，原因请参考相关资料。
创建Mysql数据库
数据库名称：netstroe
Customer表DDL定义如下：CREATE TABLE `customers` ( `Id` bigint(20) NOT NULL default '0', `name` varchar(15) default NULL, `age` int(11) default NULL, PRIMARY KEY (`Id`)) TYPE=MyISAM;
创建对象－关系映射文件
创建对象－关系映射文件：Customers.hbm.xml
代码如下：
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
name="entity.Customers"
table="customers">
name="id"
type="java.lang.Integer"
column="id"
>
name="name"
type="java.lang.String"
column="name"
length="15"
/>
name="age"
type="int"
column="age"
length="11"
/>
引入Hibernate所需的jar包
Hibernate2.jar、hibernate-tools.jar
通过Hibernate API 访问MYSQL数据库
创建业务逻辑类：useHibernate.java
代码如下：
package business;
import entity.Customers;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.Transaction;
import net.sf.hibernate.cfg.Configuration;
public class useHibernate {
public static SessionFactory sessionFactory;
/** 初始化Hibernate，创建SessionFactory实例 */
public void saveCustomers(Customers customers) throws Exception {
Configuration config = null;
config = new Configuration().configure();
// 创建一个SessionFactory 实例
sessionFactory = config.buildSessionFactory();
Session session = sessionFactory.openSession();
Transaction tx = null;
try {
/* 开始一个事务 */
tx = session.beginTransaction();
session.save(customers);
/* 提交事务 */
tx.commit();
} catch (Exception e) {
// TODO Auto-generated catch block
if (tx != null)
tx.rollback();
throw e;
} finally {
session.close();
}
}}
测试Hibernate配置是否成功
创建Junit测试：testhibernate.java
有关Junit请参考相关资料：
package test;
import business.useHibernate;
import entity.Customers;import junit.framework.TestCase;
Customers customers = new Customers();
customers.setId(new Integer(330121));
customers.setAge(24);
customers.setName("huhpreal");
useHibernate usehibernate = new useHibernate();
try {
usehibernate.saveCustomers(customers);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}}
查看后台打印信息：
(cfg.Environment 403 ) Hibernate 2.0.3
(cfg.Environment 432 ) hibernate.properties not found
(cfg.Environment 452 ) using CGLIB reflection optimizer
(cfg.Environment 462 ) JVM proxy support: true
(cfg.Configuration 703 ) Configuration resource: /hibernate.cfg.xml
(cfg.Configuration 270 ) Mapping resource: hbm/Customers.hbm.xml
(cfg.Binder 178 ) Mapping class: entity.Customers -> customers
(cfg.Configuration 885 ) Configured SessionFactory: null
(cfg.Configuration 492 ) processing one-to-many association mappings
(cfg.Configuration 503 ) processing foreign key constraints
(impl.SessionFactoryImpl 132 ) building session factory
(dialect.Dialect 83 ) Using dialect: net.sf.hibernate.dialect.MySQLDialect
(connection.DriverManagerConnectionProvider 41 ) Hibernate connection pool size: 20
(connection.DriverManagerConnectionProvider 70 ) using driver: org.gjt.mm.mysql.Driver at URL: jdbc:mysql://localhost:3306/netstore
(connection.DriverManagerConnectionProvider 71 ) connection properties: {useUnicode=true, user=root, password=123456, characterEncoding=gb2312}
(impl.SessionFactoryImpl 162 ) Use outer join fetching: false
(impl.SessionFactoryImpl 185 ) Use scrollable result sets: true
(impl.SessionFactoryImpl 186 ) JDBC 2 max batch size: 15
(impl.SessionFactoryImpl 194 ) echoing all SQL to stdout
(impl.SessionFactoryObjectFactory 82 ) no JDNI name configured
(impl.SessionFactoryImpl 269 ) Query language substitutions: {}
Hibernate 配置使用成功
查看数据库：
插入成功！
