spring3-hibernate3整合

Spring与Hibernate整合关键点：

1） Hibernate的SessionFactory对象交给Spring创建；

2） hibernate事务交给spring的声明式事务管理。

SH整合步骤：

1）引入jar包

连接池/数据库驱动包

Hibernate相关jar

Spring 核心包(5个)

Spring aop 包(4个)

spring-orm-3.2.5.RELEASE.jar            【spring对hibernate的支持】

　　　　　　    spring-tx-3.2.5.RELEASE.jar                           【事务相关】

2）配置

hibernate.cfg.xml

bean.xml

3）搭建环境、单独测试

步骤实现

 // 数据访问层
 public class DeptDao {

     // Spring与Hibernate整合： IOC容器注入
     private SessionFactory sessionFactory;
     public void setSessionFactory(SessionFactory sessionFactory) {
         this.sessionFactory = sessionFactory;
     }

     // 保存一个记录
     // Spring与Hibernate整合：事务管理交给Spring
     public void save(Dept dept) {
         sessionFactory.getCurrentSession().save(dept);
     }
 }
 2. DeptService
 public class DeptService {

     private DeptDao deptDao;
     public void setDeptDao(DeptDao deptDao) {
         this.deptDao = deptDao;
     }

     public void save(Dept dept){
         deptDao.save(dept);
     }
 }

 3. App.java  测试
 public class App {

     // 容器
     private ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");

     @Test
     public void testApp() throws Exception {
         DeptService deptServie = (DeptService) ac.getBean("deptService");
         System.out.println(deptServie.getClass());

         deptServie.save(new Dept());
     }
 }
 4. bean.xml 配置  【Spring管理SessionFactory的3中方式】
 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:p="http://www.springframework.org/schema/p"
     xmlns:context="http://www.springframework.org/schema/context"
     xmlns:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/aop
          http://www.springframework.org/schema/aop/spring-aop.xsd
          http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx.xsd">

     <!-- dao 实例 -->
     <bean id="deptDao" class="cn.itcast.dao.DeptDao">
         <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>

     <!-- service 实例 -->
     <bean id="deptService" class="cn.itcast.service.DeptService">
         <property name="deptDao" ref="deptDao"></property>
     </bean>

     <!-- 数据源配置 -->
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
         <property name="jdbcUrl" value="jdbc:mysql:///hib_demo"></property>
         <property name="user" value="root"></property>
         <property name="password" value="root"></property>
         <property name="initialPoolSize" value="3"></property>
         <property name="maxPoolSize" value="10"></property>
         <property name="maxStatements" value="100"></property>
         <property name="acquireIncrement" value="2"></property>
     </bean>

     <!-- ###########Spring与Hibernate整合  start########### -->

     <!-- 方式（1）直接加载hibernate.cfg.xml文件的方式整合
     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
         <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
     </bean>    -->

     <!-- 方式（2）连接池交给spring管理  【一部分配置写到hibernate中，一份分在spring中完成】
     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
         <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
         <property name="dataSource" ref="dataSource"></property>
     </bean> -->

     <!-- 【推荐】方式（3）所有的配置全部都在Spring配置文件中完成 -->
     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
         <!-- 注入连接池对象 -->
         <property name="dataSource" ref="dataSource"></property>

         <!-- hibernate常用配置 -->
         <property name="hibernateProperties">
             <props>
                 <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                 <prop key="hibernate.show_sql">true</prop>
                 <prop key="hibernate.hbm2ddl.auto">update</prop>
             </props>
         </property>

         <!-- hibernate映射配置
         <property name="mappingLocations">
             <list>
                 <value>classpath:cn/itcast/entity/*.hbm.xml</value>
             </list>
         </property>
         -->
         <property name="mappingDirectoryLocations">
             <list>
                 <value>classpath:cn/itcast/entity/</value>
             </list>
         </property>
     </bean>

     <!-- ###########Spring与Hibernate整合  end########### -->

     <!-- 事务配置 -->
     <!-- a. 配置事务管理器类 -->
     <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
         <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>
     <!-- b. 配置事务增强(拦截到方法后如果管理事务?) -->
     <tx:advice id="txAdvice" transaction-manager="txManager">
         <tx:attributes>
             <tx:method name="*" read-only="false"/>
         </tx:attributes>
     </tx:advice>
     <!-- c. Aop配置 -->
     <aop:config>
          <aop:pointcut expression="execution(* cn.itcast.service.*.*(..))" id="pt"/>
          <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
     </aop:config>

 </beans>