Layui上传图片 带接口

 layui.use('upload', function () {
    var upload = layui.upload;

    upload.render({
      elem: '#LAY_avatarUpload'
      , url: setter.apiDomain + '/api/WxPay/UploadFileByStream_Head'
      , choose: function (obj) {
        //将每次选择的文件追加到文件队列
        var files = obj.pushFile();

        //预读本地文件，如果是多文件，则会遍历。(不支持ie8/9)
        obj.preview(function (index, file, result) {
          console.log(index); //得到文件索引
          console.log(file); //得到文件对象
          console.log(result); //得到文件base64编码，比如图片

          //obj.resetFile(index, file, '123.jpg'); //重命名文件名，layui 2.3.0 开始新增

          //这里还可以做一些 append 文件列表 DOM 的操作

          //obj.upload(index, file); //对上传失败的单个文件重新上传，一般在某个事件中使用
          //delete files[index]; //删除列表中对应的文件，一般在某个事件中使用
        });

      }
      , done: function (index, res) {
        //上传完毕回调
        if (index.Data.Url != "") {
          var url = index.Data.Url;
          $(".UserHeadImgUrl").attr('src', setter.apiDomain + url);
        }
        var UserHeadImgUrl = $('.UserHeadImgUrl').attr("src");
        var url = '/api/Userinformation/EditImg';                  ----这个主要就是更改字段，就没粘上来
        var parment = {
          UserHeadImgUrl: UserHeadImgUrl
        }
        callpack = function ()
        {

        }
        admin.ajax(url, parment, callpack)
      }
      , error: function (index) {
        //请求异常回调
      }
    });
  })


------------接口 UploadFileByStream_Head

public ResultInfo<UploadFileResponseModel> UploadFileByStream_Head()
        {
            var info = new ResultInfo<UploadFileResponseModel>();
            try
            {
                #region 校验数据

                if (!Request.Content.IsMimeMultipartContent())
                {
                    info.Result = false;
                    info.StatusCode = (int)StatusCodeEnum.HttpRequestError;
                    info.State = StatusCodeEnum.HttpRequestError.ToString();
                    info.Msg = "不是有效的上传方式";

                    return info;
                }

                if (HttpContext.Current.Request.Files.Count <= 0)
                {
                    info.Result = false;
                    info.StatusCode = (int)StatusCodeEnum.HttpRequestError;
                    info.State = StatusCodeEnum.HttpRequestError.ToString();
                    info.Msg = "没有上传文件";

                    return info;
                }
                #endregion

                var resInfo = new UploadFileResponseModel();
                HttpPostedFile file = HttpContext.Current.Request.Files[0];
                var ext = Path.GetExtension(file.FileName);
                var fileName = DateTime.Now.ToString("yyyyMMddHHmmss") + "_" + Funcs.GetRandom(1000000, 10000000) + ext;

                var filesName = DateTime.Now.ToString("yyyyMMddHH");
                var url = "/Upload/Consignor/Img/" + filesName + "/" + fileName;
                var path = HttpContext.Current.Server.MapPath("/Upload/Consignor/Img/" + filesName + "/");
                Directory.CreateDirectory(path);
                var fullFileName = path + fileName;
                file.SaveAs(fullFileName);

                //返回数据
                resInfo.FileName = fileName;
                resInfo.ImagesType = "接口上传Stream";
                resInfo.LocalPath = file.FileName;
                resInfo.Url = url;
                info.Result = true;
                info.StatusCode = (int)StatusCodeEnum.Success;
                info.State = StatusCodeEnum.Success.ToString();
                info.Data = resInfo;
                info.Msg = "上传成功";

                return info;
            }
            catch (Exception ex)
            {
                string msg = "出现异常：" + ex.Message;
                info.Result = false;
                info.StatusCode = (int)StatusCodeEnum.Error;
                info.State = StatusCodeEnum.Error.ToString();
                info.Msg = msg;
                return info;
            }
        }；