spring MVC 多文件上传

String imgFilePath = request.getServletContext().getRealPath("") + "/resources/signatrueImg/";// 转换为文件类型的requestMultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;// 获取对应file对象Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();Iterator<String> iter = multipartRequest.getFileNames();while (iter.hasNext()) {    MultipartFile multipartFile = fileMap.get(iter.next());    if (multipartFile != null) {        Long cur = System.currentTimeMillis();        String FileName = multipartFile.getOriginalFilename();        String suffix = FileName.substring(FileName.lastIndexOf("."));        imgFilePath += cur + suffix;        File localFile = new File(imgFilePath);        multipartFile.transferTo(localFile);    }}