@RunWith(SpringJUnit4ClassRunner.class)
public class SpringDemo1 {
	//测试业务层类
	@Resource(name="accountService")
	private AccountService accountService;
	@Test
	public void demo1(){
		accountService.transfer("aaa","bbb",200d);
	}
	

}



<?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:context="http://www.springframework.org/schema/context"
    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/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

	<!-- 引入外部的属性文件 -->
	<context:property-placeholder location="classpath:jdbc.properties"/>
	<!-- 配置c3P0连接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.url}"></property>
		<property name="user" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>
	
	<!-- 配置业务层类 -->
	<bean id="accountService" class="cn.muke.spring.demo1.AccountServiceImpl">
		<property name="accountDao" ref="accountDao"></property>
	</bean>
	<!-- 配置DAO类 -->
	<bean id="accountDao" class="cn.muke.spring.demo1.AccountDaoImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
</beans>