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Spring事务配置方法介绍

 
阅读更多
 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)

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"
expr<wbr>ession</wbr>
="execution(* com.bluesky.spring.dao.*.*(..))" />
<aop:advisor advice-ref="txAdvice"
pointcut-ref
="interceptorPointCuts" />
</aop:config>

</beans>

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:

package com.bluesky.spring.dao;

imp<wbr>ort</wbr>
java.util.List;

imp<wbr>ort</wbr>
org.hibernate.SessionFactory;
imp<wbr>ort</wbr>
org.springframework.beans.factory.annotation.Autowired;
imp<wbr>ort</wbr>
org.springframework.orm.hibernate3.support.HibernateDaoSupport;
imp<wbr>ort</wbr>
org.springframework.stereotype.Component;

imp<wbr>ort</wbr>
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();
}


}
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