spring 牛刀小试之配置

配置文件格式：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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">

  <bean id="..." class="...">
    <!-- collaborators and configuration for this bean go here -->
  </bean>

  <bean id="..." class="...">
    <!-- collaborators and configuration for this bean go here -->
  </bean>

  <!-- more bean definitions go here -->

</beans>

引入配置文件：

         ApplicationContext cxt = new ClassPathXmlApplicationContext("applicationContext.xml");

　　　　　　

构造2个bean 进行注入：

<bean name="u" class="com.sfwl.DAO.impl.UserDAOImpl">   </bean>

 

<bean name="service" class="com.sfwl.service.UserService">

    <!-- SET注入 方法(主要)-->

    <property name="userDao" ref="u" />

    <!-- 构造注入 需要有构造 方法-->

<constructor-arg>

<ref bean="u"/>

 </constructor-arg>

</bean>

 

调用：

UserService service=cxt.getBean("service",UserService.class);

       User user=new User();

       service.UserSava(user);