源代码

https://gitee.com/youlixishi/demo-world/tree/master/src/spring/spring-context-demo

使用注解方式初始化bean

 public static void main(String[] args) {
        ApplicationContext context = new AnnotationConfigApplicationContext(Startup.class);
        MessagePrinter printer = context.getBean(MessagePrinter.class);
        printer.printMessage();
    }

使用xml配置bean

 public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        ((ClassPathXmlApplicationContext) context).refresh();
        MessagePrinter printer = context.getBean(MessagePrinter.class);
        printer.printMessage();
    }

运行结果

自己下载源代码测试下