spring——xml文件配置

在src源文件夹下新建applicationContext.xml

src->new->File

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
   http://www.springframework.org/schema/beans 
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/aop 
   http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
   http://www.springframework.org/schema/tx 
   http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
   http://www.springframework.org/schema/context      
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">
   

   <!-- 样例 -->

   <!-- 往UserService中的userDAO中注入UserDAOImpl -->
   <bean id="u" class="com.bbs.dao.impl.UserDAOImpl">
   </bean>
   
   <bean id="userService" class="com.bbs.service.UserService">
     <property name="userDAO" ref="u"></property>
   </bean>  

</beans>