java - controller打印所有请求参数

打印所有请求参数，进行接口调试的时候，设计前端界面的时候，会用到这些代码。

    @RequestMapping(value = "/test")
    @ResponseBody
    public MResult test (HttpServletRequest request, @RequestParam Map<String,Object> params){
        try{
            System.out.println(params);
            MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
            System.out.println(multipartRequest.getFileMap());
            Iterator<String> files = multipartRequest.getFileNames();
            while(files.hasNext()){
                System.out.println(multipartRequest.getFile(files.next()).getName());
            }
        }catch (Exception e){
            e.printStackTrace();
        }
        return new MResult(MResult.SUCCESS);
    }