2.1 容器的基本实现

　　2.1 案例:

    static final String XML_PATH = "applicationContxt.xml";

    @Test
    public void testXMLBeanFactory() {
        try {
            Resource resource = new ClassPathResource(XML_PATH);
            XmlBeanFactory beanFactory = new XmlBeanFactory(resource);
            Car car = (Car) beanFactory.getBean("car");
            System.out.println(car);
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

xml:

<?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-2.5.xsd">

    <bean id="car" class="entity.CarFactoryBean">
        <property name="carInfo" value="超级跑车,400,2000000" />
    </bean>
</beans> 

2.2 功能分析:

　　上面这段代码完成的功能无非是以下几点;

　　(1) 读取配置文件;

　　(2) 根据XMl中的配置找到对应的类的配置,并实例化;

　　(3) 把它打印出来