code: public static MultipartFormData getMultipart(ServletRequest request, UploadSetting uploadSetting) throws IORuntimeException {
  		final MultipartFormData formData = new MultipartFormData(uploadSetting);
  		try {
  			formData.parseRequest(request);
  		} catch (IOException e) {
  			throw new IORuntimeException(e);
  		}
  
  		return formData;
  	}
docs: 获得multipart/form-data 表单内容<br>
  包括文件和普通表单数据<br>
  在同一次请求中，此方法只能被执行一次！
  
  @param request {@link ServletRequest}
  @param uploadSetting 上传文件的设定，包括最大文件大小、保存在内存的边界大小、临时目录、扩展名限定等
  @return MultiPart表单
  @throws IORuntimeException IO异常
  @since 4.0.2