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Spring事物配置
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：


Spring事务配置 (2)


    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();
    }
   
   
}
posted on 2012-11-01 13:50 巴巴摇 阅读(122) 评论(0)  编辑  收藏

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