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Spring事务配置的五种方式(转)
Spring事务配置的五种方式
前段时间对Spring的事务配置做了比较深入的研究,在此之间对Spring的事务配置虽说也配置过,但是一直没有一个清楚的认识。通过这次的学习发觉Spring的事务配置只要把思路理清,还是比较好掌握的。
总结如下:
Spring配置文件中关于事务配置总是由三个组成部分,分别是DataSource、TransactionManager和代理机制这三部分,无论哪种配置方式,一般变化的只是代理机制这部分。
DataSource、TransactionManager这两部分只是会根据数据访问方式有所变化,比如使用Hibernate进行数据访问时,DataSource实际为SessionFactory,TransactionManager的实现为HibernateTransactionManager。
具体如下图:
根据代理机制的不同,总结了五种Spring事务的配置方式,配置文件如下:
第一种方式:每个Bean都有一个代理
<?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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"><bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="configLocation" value="classpath:hibernate.cfg.xml" /><property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" /></bean><!-- 定义事务管理器(声明式的事务) --><bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><!-- 配置DAO --><bean id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl"><property name="sessionFactory" ref="sessionFactory" /></bean><bean id="userDao" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"><!-- 配置事务管理器 --><property name="transactionManager" ref="transactionManager" /><property name="target" ref="userDaoTarget" /><property name="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao" /><!-- 配置事务属性 --><property name="transactionAttributes"><props><prop key="*">PROPAGATION_REQUIRED</prop></props></property></bean></beans>
第二种方式:所有Bean共享一个代理基类
<?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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"><bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="configLocation" value="classpath:hibernate.cfg.xml" /><property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" /></bean><!-- 定义事务管理器(声明式的事务) --><bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><bean id="transactionBase" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" lazy-init="true" abstract="true"><!-- 配置事务管理器 --><property name="transactionManager" ref="transactionManager" /><!-- 配置事务属性 --><property name="transactionAttributes"><props><prop key="*">PROPAGATION_REQUIRED</prop></props></property></bean><!-- 配置DAO --><bean id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl"><property name="sessionFactory" ref="sessionFactory" /></bean><bean id="userDao" parent="transactionBase" ><property name="target" ref="userDaoTarget" /></bean></beans>
第三种方式:使用拦截器
<?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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"><bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="configLocation" value="classpath:hibernate.cfg.xml" /><property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" /></bean><!-- 定义事务管理器(声明式的事务) --><bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"><property name="transactionManager" ref="transactionManager" /><!-- 配置事务属性 --><property name="transactionAttributes"><props><prop key="*">PROPAGATION_REQUIRED</prop></props></property></bean><bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"><property name="beanNames"><list><value>*Dao</value></list></property><property name="interceptorNames"><list><value>transactionInterceptor</value></list></property></bean><!-- 配置DAO --><bean id="userDao" class="com.bluesky.spring.dao.UserDaoImpl"><property name="sessionFactory" ref="sessionFactory" /></bean></beans>
第四种方式:使用tx标签配置的拦截器
<?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: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-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><context:annotation-config /><context:component-scan base-package="com.bluesky" /><bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="configLocation" value="classpath:hibernate.cfg.xml" /><property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" /></bean><!-- 定义事务管理器(声明式的事务) --><bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="*" propagation="REQUIRED" /></tx:attributes></tx:advice><aop:config><aop:pointcut id="interceptorPointCuts" expression="execution(* com.bluesky.spring.dao.*.*(..))" /><aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /></aop:config></beans>
第五种方式:全注解
<?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: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-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><context:annotation-config /><context:component-scan base-package="com.bluesky" /><tx:annotation-driven transaction-manager="transactionManager"/><bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="configLocation" value="classpath:hibernate.cfg.xml" /><property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" /></bean><!-- 定义事务管理器(声明式的事务) --><bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean></beans>
此时在DAO上需加上@Transactional注解,如下:
package com.bluesky.spring.dao;import java.util.List;import org.hibernate.SessionFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.orm.hibernate3.support.HibernateDaoSupport;import org.springframework.stereotype.Component;import com.bluesky.spring.domain.User;@Transactional@Component("userDao")public class UserDaoImpl extends HibernateDaoSupport implements UserDao {public List<User> listUsers() {return this.getSession().createQuery("from User").list(); }}
Spring事务配置的五种方式(转)
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