（1）：xml配置：hibernate.cfg.xml?（放到src目录下）和实体配置类:xxx.hbm.xml（与实体为同一目录中）
<?xml?version='1.0'?encoding='utf-8'?>
<!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>
????????<!-- Database connection settings -->
????????<property?name="connection.driver_class">
com.mysql.jdbc.Driver
</property>
????????<property?name="connection.url">
jdbc:mysql://localhost:3306/hxj
</property>
????????<property?name="connection.username">root</property>
????????<property?name="connection.password">root</property>
?
????????<!-- JDBC connection pool (use the built-in) -->
???????<property name="connection.pool_size">1</property>
?
????????<!-- SQL dialect -->
????????<property?name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
?
????????<!-- Enable Hibernate's automatic session context management -->
?????<property?name="current_session_context_class">thread</property>
?
????????<!-- Disable the second-level cache?-->
????????<property?name="cache.provider_class">
org.hibernate.cache.NoCacheProvider
</property>
?
????????<!-- Echo all executed SQL to stdout -->
????????<property?name="show_sql">true</property>
?
????????<!-- Drop and re-create the database schema on startup -->
?????? <!—update也可以用create/create-drop/update/validate代替, create?表示可以根据实体配置文件来自动生成表（只能生成表）.
-->
????????<property?name="hbm2ddl.auto">update</property>
?
?//?实体配置类
?<mapping resource="com/wsw/struts/model/Person.hbm.xml"/>
????</session-factory>
</hibernate-configuration>
?
(2):?实体配置类：xxx.hbm.xml
<?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 package=”com.wsw.struts.model”>
????<class?name="Person"?table="per">
???????<id?name="id"?column="id">
????????????<generator?class="native"/>?? //字段自增
???????</id>
???????<property?name="username"?column="p_username"/>
???????<property?name="age"?column="p_age"/>
????</class>
</hibernate-mapping>
?
（3）：测试类（包括获取SessionFactory类和实体测试类）
SessionFactory类：HibernateUtil
public?class?HibernateUtil {
????private?static?final?SessionFactory?sessionFactory;
????static?{
????????try?{
????????????// Create the SessionFactory from hibernate.cfg.xml
????????????sessionFactory?=?new?Configuration().configure().buildSessionFactory();
??????? }?catch?(Throwable ex) {
????????????// Make sure you log the exception, as it might be swallowed
??????????? System.err.println("Initial SessionFactory creation failed."?+ ex);
????????????throw?new?ExceptionInInitializerError(ex);
??????? }
??? }
????public?static?SessionFactory getSessionFactory() {
????????return?sessionFactory;
??? }
}
实体测试类：PersonManager
-----------------------------------------------------------------------------------
public?class?PersonManager {
????public?static?void?main(String[] args) {
??? ???? createAndStorePerson();
??????? HibernateUtil.getSessionFactory().close();
}
?
????private?static?void?createAndStorePerson() {
??????? Session session = ??????????????????//?通过Session工厂获取Session对象
HibernateUtil.getSessionFactory().getCurrentSession();
??????? session.beginTransaction();???????? //开始事务
???????
??????? Person person =?new?Person();
??????? person.setUsername("何小景");
??????? person.setAge(26);
??????? session.save(person);
???????
??????? session.getTransaction().commit();?//?提交事务
??? }
}
?
（4）：注解方式：
注解的方式与xml很很多类似：
首先是需要加入4个jar包：hibernate-commons-annotations.jar?、?hibernate-annotations.jar
ejb3-persistence.jar?、?hibernate-jpa-2.0-api-1.0.1.Final.jar
下面是不同的地方：
（1）：hibernate.hbm.xml?文件中把引用：xxx.hbm.xml改为引用实体类：
?????即把：<mapping resource="com/wsw/hibernate/model/Person.hbm.xml"/>
改为：<mapping class="com.wsw.hibernate.model.Teacher" />
（2）：获取SessionFactory方式发生了变化：
??????即：由SessionFactory sf = new Configuration().configure().buildSessionFactory()
????改为：SessionFactory sf = new AnnotationConfiguration().configure().buildSessionFactory()
（3）：注解方式不需要在xxx.hbm.xml把实体类与表进行映射。而采用在实体类中进行注解。
注意：（1）：如果实体类属性名与表字段名不一致的时候，要么都注解在属性前，要么都注解在get方法前。不能部分注解在属性前，部分注解在方法前。
?（2）：如果实体类属性名与表字段名一致的时候，可以部分注解在属性前，部分注解在方法前。
?（3）：如果在实体类中某些属性不注解：（属性和get都不写注解），默认为表字段名与实体类属性名一致。
?（4）：如果实体类的某个成员属性不需要存入数据库中，使用@Transient?进行注解就可以了。即类似于：(xxx.hbm.Xml配置中的某些字段不写(就是不需要对这个成员属性进行映射))
?（5）：表名称可以在实体类前进行注解。
?（6）：所有这些注解在：javax.persistence包下。而不是在hibernate包中。
?---------------------------------------------------------------------------------------------------------------------
@Entity?? ?????????????????????//?表示为实体类
@Table(name="t_teacher")???????//?表名注解
public?class?Teacher?implements?Serializable {
???
????private?int?id;
????private?String?username;
????private?int?age;
???
????@Id??????????????//?表示主键
????@GenericGenerator(name =?"generator", strategy =?"increment") ??@GeneratedValue(generator =?"generator")???//?自增长
????@Column(name =?"id") ????????????????????????????????//?类属性对应着表字段
????public?int?getId() {
???????return?id;
??? }
????public?void?setId(int?id) {
???????this.id?= id;
??? }
???
????@Column(name="t_username")???????????????????????//?类属性对应着表字段
????public?String getUsername() {
???????return?username;
??? }
???
????public?void?setUsername(String username) {
???????this.username?= username;
??? }
????
????@Column(name="t_age")??????????????????????//?在实体类属性进行注解，类属性对应着表字段
????public?int?getAge() {
???????return?age;
??? }
????public?void?setAge(int?age) {
???????this.age?= age;
??? }
转自：http://www.blogjava.net/yxhxj2006/archive/2012/06/30/381861.html