SpringMVC配置事务的5中方式

约定不等于承诺〃 2022-06-04 07:55 175阅读 0赞

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。

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  
  
  
\[html\] view plain copy  在CODE上查看代码片派生到我的代码片  
<?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();    
    \}     
\}