Spring学习(十九)----- Spring的五种事务配置详解

快来打我* 2022-03-14 08:33 134阅读 0赞

[Spring学习(十九)----- Spring的五种事务配置详解][Spring_----- Spring]

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)][Spring_ _2]][Spring_ _2_Spring_ _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>  
    
          
        <bean id="transactionManager"
            class="org.springframework.orm.hibernate3.HibernateTransactionManager">
            <property name="sessionFactory" ref="sessionFactory" />
        </bean>
        
        
        <bean id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl">
            <property name="sessionFactory" ref="sessionFactory" />
        </bean>
        
        <bean id="userDao"  
            class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">  
                 
               <property name="transactionManager" ref="transactionManager" />     
            <property name="target" ref="userDaoTarget" />  
             <property name="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao" />
              
            <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>  
    
          
        <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">  
              
            <property name="transactionManager" ref="transactionManager" />  
              
            <property name="transactionAttributes">  
                <props>  
                    <prop key="*">PROPAGATION_REQUIRED</prop>  
                </props>  
            </property>  
        </bean>    
       
        
        <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>  
    
          
        <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" />  
              
            <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>  
      
        
        <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>  
    
          
        <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>  
    
          
        <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();
        }
        
        
    }

[Spring_----- Spring]: https://www.cnblogs.com/zy-jiayou/p/7748247.html
[Spring_ _2]: http://www.blogjava.net/images/blogjava_net/robbie/WindowsLiveWriter/Spring_9C9C/Spring%E4%BA%8B%E5%8A%A1%E9%85%8D%E7%BD%AE%20%282%29_thumb.jpg
[Spring_ _2_Spring_ _2]: http://www.blogjava.net/images/blogjava_net/robbie/WindowsLiveWriter/Spring_9C9C/Spring%E4%BA%8B%E5%8A%A1%E9%85%8D%E7%BD%AE%20%282%29.jpg