关于spring:文件上传

    private void upload(List<MultipartFile> multipartFiles) throws Exception {        for (MultipartFile multipartFile : multipartFiles) {            String fileName = multipartFile.getOriginalFilename();            String filePath = "F:/test";            String fileTotalName = filePath + File.separator + fileName;            File f = new File(fileTotalName);            multipartFile.transferTo(f);        }    }

    @PostMapping("upload")    public R upload(HttpServletRequest request) throws Exception {        List<MultipartFile> files = new ArrayList<>();        MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) request;        Iterator<String> a = multipartHttpServletRequest.getFileNames();//返回的数量与前端input数量雷同, 返回的字符串即为前端input标签的name        while (a.hasNext()) {            String name = a.next();            List<MultipartFile> multipartFiles = multipartHttpServletRequest.getFiles(name);//获取单个input标签上传的文件，可能为多个            files.addAll(multipartFiles);        }        upload(files);        return R.success();    }