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				Spring事務配置的五種方式
			
          
 			Posted on 2009-04-06 19:22 sailor 閱讀(350) 評論(0)  編輯  收藏  所屬分類: spring 
			
			


		
          
		

          
    原文：http://www.aygfsteel.com/robbie/archive/2009/04/05/264003.html 
          

          
    前段時間對Spring的事務配置做了比較深入的研究，在此之間對Spring的事務配置雖說也配置過，但是一直沒有一個清楚的認識。通過這次的學習發覺Spring的事務配置只要把思路理清，還是比較好掌握的。

              總結如下：
          

              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();
          
    }
          
    
          
    
          
}
          


          

          

          
	
          


          
	    
    




          








          

				
			
          
		          		
	
          
	
          
		
			

		
	
          

          


    







          
        
	




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