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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：

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

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">
id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> name="configLocation" value="classpath:hibernate.cfg.xml" /> name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />

id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> name="sessionFactory" ref="sessionFactory" />


id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl"> name="sessionFactory" ref="sessionFactory" />

id="userDao"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
name="transactionManager" ref="transactionManager" /> name="target" ref="userDaoTarget" /> name="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao" />
name="transactionAttributes"> key="*">PROPAGATION_REQUIRED

第二种方式：所有Bean共享一个代理基类

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">
id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> name="configLocation" value="classpath:hibernate.cfg.xml" /> name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />

id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> name="sessionFactory" ref="sessionFactory" />

id="transactionBase"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
lazy-init="true" abstract="true">
name="transactionManager" ref="transactionManager" />
name="transactionAttributes"> key="*">PROPAGATION_REQUIRED

id="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl"> name="sessionFactory" ref="sessionFactory" />

id="userDao" parent="transactionBase" > name="target" ref="userDaoTarget" />


第三种方式：使用拦截器

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">
id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> name="configLocation" value="classpath:hibernate.cfg.xml" /> name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />

id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> name="sessionFactory" ref="sessionFactory" />
id="transactionInterceptor"
class="org.springframework.transaction.interceptor.TransactionInterceptor"> name="transactionManager" ref="transactionManager" />
name="transactionAttributes"> key="*">PROPAGATION_REQUIRED
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> name="beanNames"> *Dao name="interceptorNames"> transactionInterceptor

id="userDao" class="com.bluesky.spring.dao.UserDaoImpl"> name="sessionFactory" ref="sessionFactory" />


第四种方式：使用tx标签配置的拦截器

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">
/>
base-package="com.bluesky" />
id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> name="configLocation" value="classpath:hibernate.cfg.xml" /> name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />

id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> name="sessionFactory" ref="sessionFactory" />

id="txAdvice" transaction-manager="transactionManager">

name="*" propagation="REQUIRED" />



id="interceptorPointCuts"
expression="execution(* com.bluesky.spring.dao.*.*(..))" />
advice-ref="txAdvice"
pointcut-ref="interceptorPointCuts" />


第五种方式：全注解

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">
/>
base-package="com.bluesky" />
transaction-manager="transactionManager"/>
id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> name="configLocation" value="classpath:hibernate.cfg.xml" /> name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />

id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> name="sessionFactory" ref="sessionFactory" />


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 listUsers() {
return this.getSession().createQuery("from
User").list();
}
Spring事务配置的五种方式-飞网
}

因为水平有限，难免有疏忽或者不准确的地方，希望大家能够直接指出来，我会及时改正。一切为了知识的分享。

后续会有更多的精彩的内容分享给大家。