springMVC接受请求数据的方法

@RequestMapping(value="/one",method=RequestMethod.GET)
public String hello(@RequestParam("id")int id,Model model){
        model.addAttribute("id",id);
        return "hello";
}

@RequestMapping(value="/two/{id}",method=RequestMethod.GET)
public String hello2(@PathVariable("id")int id,Map<String,Object> map){
        map.put("id",id);
        return "hello";
}

@RequestMapping(value="/three")
public String hello3(HttpServletRequest request){
        String id=request.getParameter("id");
        request.setAttribute("id", id);
        return "hello";
}