package cn.service;

 import cn.dao.OrderDao;

 public class OrderService {

     private OrderDao orderDao;

     public void setOrderDao(OrderDao orderDao) {

         this.orderDao = orderDao;

     }

     //调用dao的方法

     //业务逻辑层，写转账业务

     public void accountMoney(){

         //狗蛋转账给建国，在账面上看就是狗蛋减钱，建国多钱

         //狗蛋减钱

         orderDao.lessMoney();

         //建国多钱

         orderDao.moreMoney();

     }
 }

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

        xmlns:tx="http://www.springframework.org/schema/tx"

        xmlns:aop="http://www.springframework.org/schema/aop"

        xmlns:context="http://www.springframework.org/schema/context"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

        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 ">

     <!-- 配置c3p0连接池 -->

     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

         <!-- 注入dao对象 -->

         <property name="driverClass" value="com.mysql.jdbc.Driver"></property>

         <property name="jdbcUrl" value="jdbc:mysql:///test"></property>

         <property name="user" value="root"></property>

         <property name="password" value="jqbjqbjqb123"></property>

     </bean>

     <bean id="orderService" class="cn.service.OrderService">

         <property name="orderDao" ref="orderDao"></property>

     </bean>

     <bean id="orderDao" class="cn.dao.OrderDao">

         <!-- 注入jdbcTemplate对象-->

         <property name="jdbcTemplate" ref="jdbcTemplate"></property>

     </bean>

     <!-- 创建jdbcTemplate对象 -->

     <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">

         <!-- 把dataSource传递到模板对象中-->

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

     </bean>

     <!-- 第一步：配置事务管理器 -->

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

         <!-- 注入dataSource -->

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

     </bean>

     <!-- 第二步：配置事务增强 -->

     <tx:advice id="txadvice" transaction-manager="transactionManager">

         <!-- 做事务操作 -->

         <tx:attributes>

             <!-- 设置进行事务操作的方法匹配规则-->

             <!-- 星号通配符匹配account开头的所有方法-->

             <tx:method name="account*" propagation="REQUIRED"/>

         </tx:attributes>

     </tx:advice>

     <!-- 第三步：配置切面 -->

     <aop:config>

         <!-- 切入点 -->

         <aop:pointcut id="pointcut1" expression="execution(* cn.service.OrderService.*(..))"/>

         <aop:advisor advice-ref="txadvice" pointcut-ref="pointcut1"/>

     </aop:config>