Spring中的五种事物配置类型

向右看齐 2022-06-12 03:53 191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。

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

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();  
    \}  
      
    ![dot.gif][]  
\}

转载自http://www.blogjava.net/robbie/archive/2009/04/05/264003.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
[dot.gif]: /images/20220612/0915d3752c984917902ca88670756384.png