tomcat启动后，在普通java类中获取spring管理的bean和ServletContext，（经过验证，可以取到）

//从spring容易中获取beanpublic static Object getBean(String beanName){ApplicationContext context = ContextLoader.getCurrentWebApplicationContext();return context.getBean(beanName);}//获取ServletContextpublic static ServletContext getServletContext(){WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();return context.getServletContext();}