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Spring事物配置

Spring事務(wù)配置的五種方式

前段時(shí)間對(duì)Spring的事務(wù)配置做了比較深入的研究，在此之間對(duì)Spring的事務(wù)配置雖說(shuō)也配置過(guò)，但是一直沒(méi)有一個(gè)清楚的認(rèn)識(shí)。通過(guò)這次的學(xué)習(xí)發(fā)覺(jué)Spring的事務(wù)配置只要把思路理清，還是比較好掌握的。

總結(jié)如下：

Spring配置文件中關(guān)于事務(wù)配置總是由三個(gè)組成部分，分別是DataSource、TransactionManager和代理機(jī)制這三部分，無(wú)論哪種配置方式，一般變化的只是代理機(jī)制這部分。

DataSource、TransactionManager這兩部分只是會(huì)根據(jù)數(shù)據(jù)訪問(wèn)方式有所變化，比如使用Hibernate進(jìn)行數(shù)據(jù)訪問(wèn)時(shí)，DataSource實(shí)際為SessionFactory，TransactionManager的實(shí)現(xiàn)為HibernateTransactionManager。

具體如下圖：

根據(jù)代理機(jī)制的不同，總結(jié)了五種Spring事務(wù)的配置方式，配置文件如下：

第一種方式：每個(gè)Bean都有一個(gè)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>

第二種方式：所有Bean共享一個(gè)代理基類

<?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>

第三種方式：使用攔截器

<?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>

第四種方式：使用tx標(biāo)簽配置的攔截器

<?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>

第五種方式：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>

    

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

</bean>


</beans>

此時(shí)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();
    }

}

posted on 2012-11-01 13:50 巴巴搖閱讀(120) 評(píng)論(0) 編輯收藏

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