@RequestMapping("/testServletAPI") 
public String testServletAPI(HttpServletRequest request){ 
    request.setAttribute("testScope", "hello,servletAPI");
     return "success"; 
     }

@RequestMapping("/testModelAndView") 
public ModelAndView testModelAndView(){
     /**
     * ModelAndView有Model和View的功能 
     * Model主要用于向请求域共享数据 
     * View主要用于设置视图，实现页面跳转 、
     */
      ModelAndView mav = new ModelAndView(); //向请求域共享数据 
      mav.addObject("testScope", "hello,ModelAndView"); //设置视图，实现页面跳转 
      mav.setViewName("success"); 
      return mav; 
      }

@RequestMapping("/testModel") 
public String testModel(Model model){ 
    model.addAttribute("testScope", "hello,Model");
     return "success"; 
     }    

@RequestMapping("/testMap") 
public String testMap(Map<String, Object> map){
     map.put("testScope", "hello,Map");
      return "success"; 
      }

@RequestMapping("/testModelMap") 
public String testModelMap(ModelMap modelMap){ 
    modelMap.addAttribute("testScope", "hello,ModelMap"); 
    return "success"; 
    }

public interface Model{} 
public class ModelMap extends LinkedHashMap<String, Object> {} 
public class ExtendedModelMap extends ModelMap implements Model {} 
public class BindingAwareModelMap extends ExtendedModelMap {}

@RequestMapping("/testSession") 
public String testSession(HttpSession session){ 
    session.setAttribute("testSessionScope", "hello,session");
     return "success"; 
     }

@RequestMapping("/testApplication") 
public String testApplication(HttpSession session){ 
    ServletContext application = session.getServletContext();
     application.setAttribute("testApplicationScope", "hello,application"); 
     return "success"; }