Spring获取bean的三种方式

Demo 类代码：

springbean xml 配置代码：

测试类代码：

spring 获取bean 第一种方法

BeanFactory beanFactory = new XmlBeanFactory(new ClassPathResource("springDemo01.xml"));

 System.out.println(beanFactory);  
 Demo demo = (Demo) beanFactory.getBean("demo");
  demo.test();

spring 获取bean 第二种方法：

BeanFactory beanFactory = new XmlBeanFactory(new FileSystemResource("src/springDemo01.xml"));

 System.out.println(beanFactory);  
 Demo demo = (Demo) beanFactory.getBean("demo");
  demo.test();

spring 获取bean 第三种方法：

 ApplicationContext beanFactory = new ClassPathXmlApplicationContext("springDemo01.xml");

 System.out.println(beanFactory);  
 Demo demo = (Demo) beanFactory.getBean("demo");
  demo.test();

spring 包依赖图：