在 1.x中，spring 的事務(wù)聲明，一直是采用動(dòng)態(tài)代理bean 實(shí)現(xiàn)的，也就是采用ProxyFactoryBean或者子類TransactionProxyFactoryBean來實(shí)現(xiàn)的

考慮下面的例子：(用1.x實(shí)現(xiàn)）
<bean id="myTxManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
??? <property name="sessionFactory" ref="mySessionFactory"/>
? </bean>

? <bean id="myProductService" class="org.springframework.aop.framework.ProxyFactoryBean">
??? <property name="proxyInterfaces" value="product.ProductService"/>
??? <property name="target">
??????? <bean class="product.DefaultProductService">
??????????? <property name="productDao" ref="myProductDao"/>
??????? </bean>
??? </property>
??? <property name="interceptorNames">
????? <list>
??????? <value>myTxInterceptor</value> <!-- the transaction interceptor (configured elsewhere) -->
????? </list>
??? </property>
? </bean>

?<bean id="myTxInterceptor"

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

<property name="transactionManager">

?? <ref bean="myTransactionManager"/>

</property>

<property name="transactionAttributeSource">

? <value>

?? product.ProductService.increasePrice*=PROPAGATION_REQUIRED

? product.ProductService.someOtherBusinessMethod=PROPAGATION_MANDATORY

? </value>

</property>

</bean>

或者

<bean id="myProductService"

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

<property name="transactionManager">

<ref bean="myTransactionManager"/>

</property>

<property name="target">

<ref bean="myProductServiceTarget"/>

</property>

<property name="transactionAttributes">

<props>

<prop key="increasePrice*">PROPAGATION_REQUIRED</prop>

<prop key="someOtherBusinessMethod">PROPAGATION_MANDATORY</prop>

</props>

</property>
</bean>

當(dāng)然，這需要每個(gè)服務(wù)接口都要聲明一個(gè)事務(wù)bean ，這比較麻煩，當(dāng)然，spring 也提供了另外一種解決方案

采用BeanNameAutoProxyCreator 自動(dòng)代理聲明入口來全局聲明所有的事務(wù)。
<bean id="matchAllWithPropReq"
?????????class="org.springframework.transaction.interceptor.MatchAlwaysTransactionAttributeSource">
?????????<property name="transactionAttribute"><value>PROPAGATION_REQUIRED</value></property>
</bean>

<bean id="matchAllTxInterceptor"
?????????class="org.springframework.transaction.interceptor.TransactionInterceptor">
?????????<property name="transactionManager"><ref bean="transactionManager"/></property>
?????????<property name="transactionAttributeSource"><ref bean="matchAllWithPropReq"/></property>
</bean>
<bean id="autoProxyCreator"
?????????class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
?????????<property name="interceptorNames">
????????????<list>
???????????????<idref local="matchAllTxInterceptor"/>
???????????????<idref bean="hibInterceptor"/>
????????????</list>
?????????</property>
?????????<property name="beanNames">
????????????<list>
???????????????<idref local="core-services-applicationControllerSevice"/>
???????????????<idref local="core-services-deviceService"/>
???????????????<idref local="core-services-authenticationService"/>
???????????????<idref local="core-services-packagingMessageHandler"/>
???????????????<idref local="core-services-sendEmail"/>
???????????????<idref local="core-services-userService"/>
????????????</list>
?????????</property>
</bean>
list中包含了所有需要實(shí)現(xiàn)事務(wù)的服務(wù)bean?

?spring 2.0帶來的aop變化和bean xml schema的變化，使得事務(wù)的處理變得更加的簡(jiǎn)單,同aop一樣，事務(wù)也采用兩種方式來處理，一種主要為xml 聲明，另外的一種也就是注釋的引入。
先來看第一種情況：
<beans xmlns="http://www.springframework.org/schema/beans"
?????? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?????? 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.xsd
?????? http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
?????? http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

? <!-- SessionFactory, DataSource, etc. omitted -->

? <bean id="myTxManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
??? <property name="sessionFactory" ref="mySessionFactory"/>
? </bean>
?
? <aop:config>
?? <!-- 這定義了主要的切面，也就是那些接口可以使用事務(wù),這里只是說執(zhí)行ProductService的所有方法-->
??? <aop:pointcut id="productServiceMethods" expression="execution(* product.ProductService.*(..))"/>
??? <aop:advisor advice-ref="txAdvice" pointcut-ref="productServiceMethods"/>
? </aop:config>
??<!--主要的事務(wù) advice 聲明事務(wù)的相關(guān)屬性-->
? <tx:advice id="txAdvice" transaction-manager="myTxManager">
??? <tx:attributes>
????? <tx:method name="increasePrice*" propagation="REQUIRED"/>
????? <tx:method name="someOtherBusinessMethod" propagation="REQUIRES_NEW"/>
????? <tx:method name="*" propagation="SUPPORTS" read-only="true"/>
??? </tx:attributes>
? </tx:advice>

? <bean id="myProductService" class="product.SimpleProductService">
??? <property name="productDao" ref="myProductDao"/>
? </bean>

</beans>

第二種方式，使用 @Transactional 注釋

@Transactional

public interface FooService {

?

??? Foo getFoo(String fooName);

?

??? Foo getFoo(String fooName, String barName);

?

??? void insertFoo(Foo foo);

?

??? void updateFoo(Foo foo);

}

xml 配置

<!-- from the file 'context.xml' -->

<?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: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.xsd

?????? http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd

?????? http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

?

? <!-- this is the service object that we want to make transactional -->

? <bean id="fooService" class="x.y.service.DefaultFooService"/>

?

? <!-- enable the configuration of transactional behavior based on annotations -->

? <tx:annotation-driven/>

?

? <!-- a PlatformTransactionManager is still required -->

? <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

??? <!-- sourced from somewhere else -->

??? <property name="dataSource" ref="dataSource"/>

? </bean>

?

? <!-- other <bean/> definitions here -->

?

</beans>

public class DefaultFooService implements FooService {

?

??? public Foo getFoo(String fooName) {

??????? // do something

??? }

?

??? // these settings have precedence

??? @Transactional(readOnly = false, propagation = Propagation.REQUIRES_NEW)

??? public void updateFoo(Foo foo) {

??????? // do something

??? }

}