【Spring】Spring与Hibernate整合（十六）

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

1. DeptDao.java

// 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>

细节