195-如何获取Spring容器中的对象？

    1）SpringBoot框架获取容器中的对象
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
        RestTemplate bean = (RestTemplate) context.getBean("restTemplate");
    2）Spirng框架如何获取容器中的对象呢?
        ApplicationContext context = new ClassPathXmlApplicationContext("application.xml")
        RestTemplate bean = (RestTemplate) context.getBean("restTemplate");