上传单文件

   public async Task<ApiResult> UoloadAnnexFile([FromForm] TemporaryAnnexsUpload model)//
   {
       try
       {
           if (model == null)
           {
               return ApiResult.error(ApplicationErrorCodeEnum.FAILURE_UPLOAD, ApplicationErrorCodeEnum.FAILURE_UPLOAD.GetMessage());
           }
           else
           {
               string webRootPath = _webHostEnvironment.WebRootPath + "/uploads/Annexs/" + "临时文件夹" + "/";
               string contentRootPath = _webHostEnvironment.ContentRootPath;
               //检查路径是否存在
               if (!Directory.Exists(webRootPath))
               {
                   Directory.CreateDirectory(webRootPath);
               }
               UploadsQuery query = new UploadsQuery();
               string fileName = model.file.FileName;
               string suffix = Path.GetExtension(fileName);
               string iName = DateTime.Now.ToString("yyyyMMddHHmmss");
               string savePath = "/uploads/Annexs/" + "临时文件夹" + "/";
               string file = savePath + fileName;
               query.url = file;
               query.name = model.file.FileName;
               string filePath = Path.Combine(webRootPath, fileName);

               using (var stream = new FileStream(filePath, FileMode.Create))
               {
                   await model.file.CopyToAsync(stream);
               }
               System.Threading.Thread.Sleep(1000);



               return ApiResult.success(ApplicationErrorCodeEnum.SUCCESS, ApplicationErrorCodeEnum.SUCCESS.GetMessage(), query);
           }

       }
       catch (Exception ex)
       {

           _loggerContext.Error(ex.Message, ex);
           return ApiResult.error(ApplicationErrorCodeEnum.FAILURE_UPLOAD, ApplicationErrorCodeEnum.FAILURE_UPLOAD.GetMessage());
       }
   }

    /// <summary>
    /// 附件上传临时单文件
    /// </summary>
    public class TemporaryAnnexsUpload : TemporaryUpload
    {

    }

    /// <summary>
    /// 文件/图片上传模型
    /// </summary>
    public class TemporaryUpload
    {
        /// <summary>
        /// 单文件/单图片上傳
        /// </summary>
        [Required(ErrorMessage = "File type is required.")]
        public IFormFile file { get; set; }
    }