陌上花開

Spring配置文件中關(guān)于事務(wù)配置總是由三個(gè)組成部分，分別是DataSource、TransactionManager和代理機(jī)制這三部分，無論哪種配置方式，一般變化的只是代理機(jī)制這部分。

　　DataSource、TransactionManager這兩部分只是會(huì)根據(jù)數(shù)據(jù)訪問方式有所變化，比如使用Hibernate進(jìn)行數(shù)據(jù)訪問時(shí)，DataSource實(shí)際為SessionFactory，TransactionManager的實(shí)現(xiàn)為HibernateTransactionManager。

　　具體如下圖：

　　

　　根據(jù)代理機(jī)制的不同，總結(jié)了五種Spring事務(wù)的配置方式，配置文件如下：
     第一種方式：每個(gè)Bean都有一個(gè)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>      <!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->      <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">             <!-- 配置事務(wù)管理器 -->             <property name="transactionManager" ref="transactionManager" />             <property name="target" ref="userDaoTarget" />           <property name="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao" />         <!-- 配置事務(wù)屬性 -->          <property name="transactionAttributes">              <props>                  <prop key="*">PROPAGATION_REQUIRED</prop>             </props>          </property>      </bean>  </beans>

 

　　第二種方式：所有Bean共享一個(gè)代理基類

　　

<?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>      <!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->      <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">          <!-- 配置事務(wù)管理器 -->          <property name="transactionManager" ref="transactionManager" />          <!-- 配置事務(wù)屬性 -->          <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>

        第三種方式：使用攔截器

　　

<?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>      <!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->      <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" />          <!-- 配置事務(wù)屬性 -->          <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>

 

　　　第四種方式：使用tx標(biāo)簽配置的攔截器

 

<?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>      <!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->      <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>

 

　　第五種方式：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>      <!-- 定義事務(wù)管理器（聲明式的事務(wù)） -->      <bean id="transactionManager"         class="org.springframework.orm.hibernate3.HibernateTransactionManager">         <property name="sessionFactory" ref="sessionFactory" />     </bean>     </beans>

 

　　此時(shí)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 listUsers() { 　　return this.getSession().createQuery("from User").list(); 　　} 　　 　　}