hibernate与spring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。
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1. DeptDao.java |
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// 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); } } |
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2. DeptService |
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public class DeptService {
private DeptDao deptDao; public void setDeptDao(DeptDao deptDao) { this.deptDao = deptDao; }
public void save(Dept dept){ deptDao.save(dept); } }
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3. App.java 测试 |
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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()); } } |
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4. bean.xml 配置 【Spring管理SessionFactory的3中方式】 |
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<?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> |
