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    paulwong
    

    

    



    
	
					
	
    
		
    
			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：

    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 2011-11-08 23:14 paulwong 閱讀(496) 評論(0)  編輯  收藏  所屬分類: SPRING 
		
    
	
    
	
	





    
	    
    




    








    

				

    



    







    
        
	



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