SSM框架dao层和service层配置文件

<?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:contexe="http://www.springframework.org/schema/context"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.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">
<!--dao层-->
    <!--引入外部文件-->
    <contexe:property-placeholder location="classpath:jdbc.properties"></contexe:property-placeholder>
    <!--链接数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName"  value="${jdbc.driver}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>
    <!--创建sqlsessionfaction对象-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--扫描dao包 spring容器注入对象-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.dao"></property>
    </bean>
<!--service层-->
    <!--扫描service层 开启service层注解-->
    <context:component-scan base-package="cn.service"></context:component-scan>
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--事务处理   环绕-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true" propagation="SUPPORTS"/>
            <tx:method name="get*" read-only="true" propagation="SUPPORTS"/>
            <tx:method name="query*" read-only="true" propagation="SUPPORTS"/>
            <tx:method name="*" read-only="false" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!--配置切面  面向service层-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.service.impl.*.*(..))"></aop:advisor>
    </aop:config>
</beans>