Spring事务配置的五种方式(转载) -

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Spring事务配置的五种方式(转载)

博客分类：

spring

Spring 事务

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

<?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>

	<!-- 定义事务管理器（声明式的事务） -->
	<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">
		<!-- 配置事务管理器 -->
		<property name="transactionManager" ref="transactionManager" />
		<property name="target" ref="userDaoTarget" />
		<property name="proxyInterfaces"
			value="com.bluesky.spring.dao.GeneratorDao" />
		<!-- 配置事务属性 -->
		<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>

	<!-- 定义事务管理器（声明式的事务） -->
	<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">
		<!-- 配置事务管理器 -->
		<property name="transactionManager" ref="transactionManager" />
		<!-- 配置事务属性 -->
		<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>

	<!-- 定义事务管理器（声明式的事务） -->
	<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" />
		<!-- 配置事务属性 -->
		<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>

	<!-- 定义事务管理器（声明式的事务） -->
	<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>

(<tx:advice> 具体可参考http://zhuchengzzcc.iteye.com/blog/1559831 )

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>

	<!-- 定义事务管理器（声明式的事务） -->
	<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：

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();
    }
    
    
}

文章转载地址: http://www.blogjava.net/robbie/archive/2009/04/05/264003.html