Spring

M(dao)进行实际操作 service调dao,contronller(action)调用service,service依赖(调用)dao，action调用service

目录结构

service中必须有dao的set get方法，action中必须有service的setget方法，且属性名应与xml中配置的一致

<?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"
	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">
		
	<beans> 
	<bean id="user" class="com.bean.User" ></bean>
	<bean id="udao" class="com.dao.UserDaoImpl" ></bean>
	<bean id="uservice" class="com.service.UserServiceImpl" >
		<property name="udao" ref="udao"></property>
	</bean>
	<bean id="uaction" class="com.action.UserAction" >
		<property name="service" ref="uservice"></property>
	</bean>
</beans>
</beans>

     

【类中变量名必须和xml中一致！！！！！！！】