Spring事务配置的五种方式

转载自:http://www.blogjava.net/robbie/archive/2009/04/05/264003.html

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事务配置的五种方式_第1张图片

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">

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">


class="org.springframework.orm.hibernate3.HibernateTransactionManager">


class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">



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">

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">


class="org.springframework.orm.hibernate3.HibernateTransactionManager">

class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"

lazy-init="true"abstract="true">



PROPAGATION_REQUIRED


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">

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">


class="org.springframework.orm.hibernate3.HibernateTransactionManager">

class="org.springframework.transaction.interceptor.TransactionInterceptor">


PROPAGATION_REQUIRED

*Dao

transactionInterceptor


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">

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">


class="org.springframework.orm.hibernate3.HibernateTransactionManager">

expression="execution(* com.bluesky.spring.dao.*.*(..))"/>

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">

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">


class="org.springframework.orm.hibernate3.HibernateTransactionManager">

此时在DAO上需加上@Transactional注解,如下:

packagecom.bluesky.spring.dao;

importjava.util.List;

importorg.hibernate.SessionFactory;

importorg.springframework.beans.factory.annotation.Autowired;

importorg.springframework.orm.hibernate3.support.HibernateDaoSupport;

importorg.springframework.stereotype.Component;

importcom.bluesky.spring.domain.User;

@Transactional

@Component("userDao")

publicclassUserDaoImplextendsHibernateDaoSupportimplementsUserDao {

publicListlistUsers() {

returnthis.getSession().createQuery("from User").list();

}

}

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