Spring事务配置的五种方法(一)

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">           <propertyname="configLocation" value="classpath:hibernate.cfg.xml"/>           <propertyname="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">         <propertyname="sessionFactory" ref="sessionFactory"/>     </bean>          <!-- 配置DAO -->     <bean id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl">         <propertyname="sessionFactory" ref="sessionFactory"/>     </bean>          <bean id="userDao"           class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">              <!-- 配置事务管理器 -->              <propertyname="transactionManager" ref="transactionManager"/>              <propertyname="target" ref="userDaoTarget"/>            <propertyname="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao"/>         <!-- 配置事务属性 -->           <propertyname="transactionAttributes">               <props>                   <propkey="*">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">           <propertyname="configLocation" value="classpath:hibernate.cfg.xml"/>           <propertyname="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">         <propertyname="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 -->           <propertyname="transactionManager" ref="transactionManager"/>           <!-- 配置事务属性 -->           <propertyname="transactionAttributes">               <props>                   <propkey="*">PROPAGATION_REQUIRED</prop>               </props>           </property>       </bean>             <!-- 配置DAO -->     <bean id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl">         <propertyname="sessionFactory" ref="sessionFactory"/>     </bean>          <bean id="userDao" parent="transactionBase">           <propertyname="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">           <propertyname="configLocation" value="classpath:hibernate.cfg.xml"/>           <propertyname="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">         <propertyname="sessionFactory" ref="sessionFactory"/>     </bean>         <bean id="transactionInterceptor"           class="org.springframework.transaction.interceptor.TransactionInterceptor">           <propertyname="transactionManager" ref="transactionManager"/>           <!-- 配置事务属性 -->           <propertyname="transactionAttributes">               <props>                   <propkey="*">PROPAGATION_REQUIRED</prop>               </props>           </property>       </bean>            <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">           <propertyname="beanNames">               <list>                   <value>*Dao</value>             </list>           </property>           <propertyname="interceptorNames">               <list>                   <value>transactionInterceptor</value>               </list>           </property>       </bean>          <!-- 配置DAO -->     <bean id="userDao" class="com.bluesky.spring.dao.UserDaoImpl">         <propertyname="sessionFactory" ref="sessionFactory"/>     </bean> </beans>