JSP学习笔记(五十九)：简化Spring的配置文件

受这篇文章(主题：Spring 事务简化配置)的启发，我对原有的Spring配置文件进行了修改，原配置文件：

    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="/WEB-INF/jdbc.properties" />
    </bean>

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName"
            value="${jdbc.driverClassName}">
        </property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <bean id="jdbcTransactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
    </bean>

    <bean id="txProxyTemplate" abstract="true"
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="transactionManager">
            <ref bean="jdbcTransactionManager" />
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="create*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="del*">PROPAGATION_REQUIRED</prop>
                <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
            </props>
        </property>
    </bean>

添加dao,service,action的配置如下：

    <bean id="userDAO" class="com.modou.dao.jdbc.UserJdbcDAO">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
    </bean>

    <bean id="userTarget"
        class="com.modou.service.jdbc.UserServiceJdbcImpl">
        <property name="userDAO">
            <ref local="userDAO" />
        </property>
    </bean>


    <bean id="userService" parent="txProxyTemplate">
        <property name="target">
            <ref local="userTarget" />
        </property>
    </bean>

    <bean id="userAction"
        class="com.modou.web.action.userListAction">
        <property name="userService">
            <ref local="userService" />
        </property>
    </bean>

 

修改后的配置文件如下：

    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="/WEB-INF/jdbc.properties" />
    </bean>

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName"
            value="${jdbc.driverClassName}">
        </property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <bean id="jdbcTransactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
    </bean>

    <bean id="transactionInterceptor"
        class="org.springframework.transaction.interceptor.TransactionInterceptor">
        <property name="transactionManager">
            <ref bean="jdbcTransactionManager" />
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="create*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="del*">PROPAGATION_REQUIRED</prop>
                <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
            </props>
        </property>
    </bean>

    <bean
        class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <value>*Service</value>
        </property>
        <property name="interceptorNames">
            <list>
                <value>transactionInterceptor</value>
            </list>
        </property>
    </bean>

修改后，添加dao,service,action的配置如下：

    <bean id="userDAO" class="com.modou.dao.jdbc.UserJdbcDAO"
        autowire="byName" />

    <bean id="userService"
        class="com.modou.service.jdbc.UserServiceJdbcImpl" autowire="byName" />

    <bean id="userAction"
        class="com.modou.web.action.userListAction"
        autowire="byName" />

 

比原来的简单了不少，看起来也更清晰，这样所有以Service结尾的bean都会自动受代理事务的管理。