html5异步单图片多图片上传两种实现方式 后台.net mvc接收

Asp.net mvc上传多张图片后台存储

前台页面通过<file name="img">标签数组上传图片，后台根据Request.Files["img"]来接收前台上传的图片。
 1 System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;
            if (files.Count == 0)
                return false;
            for (int i = 0; i < files.AllKeys.Count(); i++)
            {
                if (files.AllKeys[i] != "img")
                {
                    if (files[i].FileName.Length > 0)
                    {
                        System.Web.HttpPostedFile postedfile = files[i];
                        string filePath = "";
                        var ext = Path.GetExtension(postedfile.FileName);
                        var fileName = DateTime.Now.Ticks.ToString() + ext;
                        // 组合文件存储的相对路径
                        filePath = "/Upload/images/" + fileName;
                        // 将相对路径转换成物理路径
                        var path = Server.MapPath(filePath);
                        postedfile.SaveAs(path);
                        string fex = Path.GetExtension(postedfile.FileName);
                        //存储产品轮播图信息
                        ProductCarousel model = new ProductCarousel();
                        model.ProductID = productID;
                        model.PicSlider = filePath;
                        db.ProductCarousels.Add(model);
                        db.SaveChanges();
                    }
                }
                
            }

 HBuilder的Uploader插件上传图片到服务器

public JsonResult ApplayCertification()
        {
            try
            {
                var para = Request.Files.Keys;
                foreach (var item in para)
                {
                    Log.Debug("所有参数：" + item.ToString());
                }
                //接收客户端上传的文件
                var FileCollect = HttpContext.Request.Files;

                var user = authMag.GetUser(Token);
                var certification = db.UserCertifications.SingleOrDefault(p => p.UserID == user.ID);

                //遍历文件集合
                if (FileCollect.Count > 0)
                {
                    foreach (string key in FileCollect)
                    {
                        HttpPostedFileBase FileSave = FileCollect[key];//用key获取单个文件对象HttpPostedFile
                        //保存上传的图片
                        string fileName = SaveImg(FileSave, FileCollect.Get(key).FileName, user.ID);
                        if (key == "OwerImg")
                        {
                            certification.OwerImg = fileName;
                        }
                        if (key == "OwerCardImg")
                        {
                            certification.OwerCardImg = fileName;
                        }
                        if (key == "OwerLicenceImg")
                        {
                            certification.OwerLicenceImg = fileName;
                        }
                        if (key == "OwerDrivingLicenceImg")
                        {
                            certification.OwerDrivingLicenceImg = fileName;
                        }
                        if (key == "CarImg")
                        {
                            certification.CarImg = fileName;
                        }
                        if (key == "AssuranceImg")
                        {
                            certification.AssuranceImg = fileName;
                        }
                    }
                }
                certification.AuditingStatus = (byte)AuditingStatus.AuditPass;
                db.SaveChanges();
                return Json(new
                {
                    state = true,
                    msg = "申请成功",
                },
                JsonRequestBehavior.AllowGet
                );
            }
            catch (Exception ex)
            {
                Log.Error("ApplayCertification Error", ex);
                return Json(new
                {
                    state = false,
                },
               JsonRequestBehavior.AllowGet
               );
            }
        }

存储上传图片方法

 private string SaveImg(HttpPostedFileBase file, string fileName, int userID)
        {
            //图片路径：Upload+当前日期+当前userID
            string filePath = "/Upload/"+DateTime.Now.ToString("yyyy-MM-dd")+"/"+userID.ToString()+"/";
            if (!Directory.Exists(Server.MapPath(filePath)))
            {
                Directory.CreateDirectory(Server.MapPath(filePath));
            }
            string returnPath = filePath + DateTime.Now.ToString("yyyyMMddhhmmssffff") + fileName;
            string absoluteFilePath = Server.MapPath(filePath) + DateTime.Now.ToString("yyyyMMddhhmmssffff") + fileName;
            file.SaveAs(absoluteFilePath);
            return returnPath;

        }