注入依赖

//赋值注入<?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-2.0.xsd">       <bean id="school" name="code">//测试import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.xml.XmlBeanFactory;import org.springframework.core.io.ClassPathResource;public class GreetingMain {public static void main(String[] args) {//加载配置文件ClassPathResource resource = new ClassPathResource("ioc/iocSample/beans.xml");//根据配置文件构造BeanFactory对象BeanFactory factory = new XmlBeanFactory(resource);//取得提供具体业务逻辑的Java BeanAction action = (Action)factory.getBean("greet");//调用Java Bean中的具体方法action.greet();}} 

//构造器注入<?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-2.0.xsd">    <bean id="school" class="ioc.iocConstructor.Student">        <constructor-arg index="0">            <value>101</value>        </constructor-arg>        <constructor-arg index="1">            <value>Bill</value>        </constructor-arg>    <constructor-arg index="2">           <list>            <value>英语</value>            <value>物理</value>            <value>高等数学</value>            <value>软件工程</value>        </list>        </constructor-arg>        <constructor-arg index="3">            <ref bean="school"/>        </constructor-arg>    </bean></beans>