spring事物配置示例

      以前项目中经常用spring,事务处理还没有亲自配置过, 惭愧。现在马上上路．

首先，在spring容器中，配置transactionManager，这个有好多实现，这里以HibernateTransactionManager为例,

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

然后，再定义一个事务模板

    <bean id="txProxyTemplate" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="transactionManager">
            <ref bean="transactionManager" />
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="save*">PROPAGATION_REQUIRED,-Exception</prop>
                <prop key="remove*">PROPAGATION_REQUIRED,-Exception</prop>
                <prop key="update*">PROPAGATION_REQUIRED,-Exception</prop>
                <prop key="incress*">PROPAGATION_REQUIRED,-Exception</prop>
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

这个模板怎样应用到业务方法上呢？请看下面的配置

    <!-- 
        <bean id="userService" class="com.sclsch.service.impl.UserServiceImpl">
        <property name="userDao">
        <ref bean="BmUserDAO" />
        </property>
        </bean>
    -->
    <!-- 为userService配置事务-->
    <bean id="userService" parent="txProxyTemplate">
        <property name="target">
            <bean class="com.sclsch.service.impl.UserServiceImpl">
                <property name="userDao">
                    <ref bean="BmUserDAO" />
                </property>
            </bean>
        </property>
    </bean>

注释部分是原来没有配置事务的service. parent指定为这个service配置的事务模板．