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			Spring事務配置的五種方式
		
          
		Spring配置文件中關于事務配置總是由三個組成部分，分別是DataSource、TransactionManager和代理機制這三部分，無論哪種配置方式，一般變化的只是代理機制這部分。 

              DataSource、TransactionManager這兩部分只是會根據數據訪問方式有所變化，比如使用Hibernate進行數據訪問時，DataSource實際為SessionFactory，TransactionManager的實現為HibernateTransactionManager。
          

              具體如下圖：
          

          Spring事務配置 (2)
          

              根據代理機制的不同，總結了五種Spring事務的配置方式，配置文件如下：
          

              第一種方式：每個Bean都有一個代理
          

          <?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> 
          

              <!– 定義事務管理器（聲明式的事務） –> 
              <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> 
          

              <!– 定義事務管理器（聲明式的事務） –> 
              <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”> 
                  <!– 配置事務管理器 –> 
                  <property name=”transactionManager” ref=”transactionManager” /> 
                  <!– 配置事務屬性 –> 
                  <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> 
          

              <!– 定義事務管理器（聲明式的事務） –> 
              <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> 
          

              <!– 定義事務管理器（聲明式的事務） –> 
              <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> 
          

              <!– 定義事務管理器（聲明式的事務） –> 
              <bean id=”transactionManager”
                  class=”org.springframework.orm.hibernate3.HibernateTransactionManager”>
                  <property name=”sessionFactory” ref=”sessionFactory” />
              </bean>
             
          </beans>
          

          此時在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();
              }
             
              
          }
          
		
          
			posted on 2011-10-27 19:29 鴻雁 閱讀(306) 評論(0)  編輯  收藏  所屬分類: IT技術相關 
		
          
	
          
	
	


	


          
	    
    




          








          

				

          




    







          
        
	




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