private void Add()
        {
            var sm = new SourceMaterial();

            sm.SellerId = GetInt("sellerid");
            sm.Title    = GetString("title");
            sm.Url      = GetString("thumbnail");
            var text = GetString("text");

            //sm.Summary = text.Length > 20 ? text.Substring(0, 20) : text;
            sm.Description = GetString("content");
            sm.CreateTime  = DateTime.Now;
            sm.ImageType   = UploadType.Img;
            SourceMaterialHelper.Create(sm);
        }
        public override void ProcessRequest(HttpContext context)
        {
            RoleType = RoleType.ThirdUser; //需商家管理权限
            UploadType imgType   = (UploadType)Convert.ToInt32(context.Request.QueryString["type"]);
            var        qsellerId = context.Request.QueryString["sellerid"];
            var        sellerId  = 0;

            if (!string.IsNullOrEmpty(qsellerId))
            {
                sellerId = Convert.ToInt32(qsellerId);
            }

            base.ProcessRequest(HttpContext.Current);

            //String aspxUrl = context.Request.Path.Substring(0, context.Request.Path.LastIndexOf("/") + 1);

            var userFileName = CurrentUser.Id.ToString();
            var isManager    = 0;

            if (CurrentUser.RoleType < RoleType.Merchant)
            {
                userFileName = sellerId.ToString();
                if (sellerId == 0 || sellerId == CurrentUser.Id)
                {
                    userFileName = "admin";
                    isManager    = 1;
                }
            }
            //    isManager = 1;
            //if (isManager == 1)
            //{
            //    //管理员上传的图片 统一到一个目录
            //    userFileName = "admin";
            //}

            //文件保存目录路径
            String     savePath = "../../File/" + userFileName + "/";// "../attached/";
            UploadType type     = (UploadType)Convert.ToInt32(context.Request.QueryString["type"]);

            //文件保存目录URL
            String saveUrl = Utility._domainurl + "/File/" + userFileName + "/";; // "../attached/";

            //定义允许上传的文件扩展名
            Hashtable extTable = new Hashtable();

            if (type == UploadType.MerchantLoginAd)
            {
                extTable.Add("image", "png");
            }
            else
            {
                extTable.Add("image", "gif,jpg,jpeg,png,bmp");
                extTable.Add("flash", "swf,flv");
                extTable.Add("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
                extTable.Add("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2,apk,ipa");
            }

            //最大文件大小
            int maxSize = 1073741824;

            HttpPostedFile imgFile = context.Request.Files["imgFile"];

            if (imgFile == null)
            {
                showError("请选择文件。");
            }

            String dirPath = context.Server.MapPath(savePath);

            if (!Directory.Exists(dirPath))
            {
                //showError("上传目录不存在。");
                Directory.CreateDirectory(dirPath);
            }

            String dirName = context.Request.QueryString["dir"];

            //if (String.IsNullOrEmpty(dirName))
            //{
            //    dirName = "image";
            //}
            if (!extTable.ContainsKey(dirName))
            {
                showError("目录名不正确。");
            }

            String fileName = imgFile.FileName;
            String fileExt  = Path.GetExtension(fileName).ToLower();

            if (imgFile.InputStream == null || imgFile.InputStream.Length > maxSize)
            {
                showError("上传文件大小超过限制。");
            }

            if (String.IsNullOrEmpty(fileExt) ||
                Array.IndexOf(((String)extTable[dirName]).Split(','), fileExt.Substring(1).ToLower()) == -1)
            {
                showError("上传文件扩展名是不允许的扩展名。\n只允许" + ((String)extTable[dirName]) + "格式。");
            }


            var typeName = GetTypeName(context);

            //创建文件夹
            dirPath += dirName + typeName + "/";
            saveUrl += dirName + typeName + "/";
            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }
            //管理员素材库统一到一个文件夹即可 登录页大图IOS那边需要固定地址图片http://XXX/{sellerid}/XXX/1280x800.jpg
            if (isManager == 0 && type != UploadType.MerchantLoginAd)
            {
                String ymd = DateTime.Now.ToString("yyyyMMdd", DateTimeFormatInfo.InvariantInfo);
                dirPath += ymd + "/";
                saveUrl += ymd + "/";
            }
            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }

            //String newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", DateTimeFormatInfo.InvariantInfo) + fileExt;
            //String filePath = dirPath + newFileName;

            var originalFileName = DateTime.Now.ToUnixTime().ToString() + Utility.GetRandom(1, 1000);

            fileName = originalFileName + fileExt;
            //fileName = fileName.Replace(',', '.');//防止图片名称中存在,分隔符
            String filePath = dirPath + fileName;
            var    index    = 2;

            while (File.Exists(filePath))
            {
                fileName = originalFileName + string.Format("({0})", index) + fileExt;
                filePath = dirPath + fileName;
                index++;
            }
            imgFile.SaveAs(filePath);

            if ((int)((int)imgType / 100) == 1)
            {
                //图片处理 生成不同尺寸图片
                var list = ImgSizeCfgHelper.GetImgSizeCfgList(imgType);
                foreach (var imgSizeCfg in list)
                {
                    Utility.MakeThumNail(filePath, imgSizeCfg.Width, imgSizeCfg.Height);
                }
            }

            //String fileUrl = saveUrl + newFileName;
            String fileUrl = saveUrl + fileName;

            var addId = 0;

            //添加商户图片
            if (imgType == UploadType.Img)
            {
                //TODO:暂时这么添加 图片名称及图片描述 这个后面再根据需求定怎么赋初值 后面应该加上图片类型!(上传)
                var sm = new SourceMaterial();
                sm.SellerId    = sellerId == 0 ? CurrentUser.Id : sellerId;//管理员在商户管理页面上传的图片归商户管理
                sm.Title       = Path.GetFileNameWithoutExtension(fileName);
                sm.Url         = fileUrl;
                sm.Description = Path.GetFileNameWithoutExtension(fileName);
                sm.CreateTime  = DateTime.Now;
                sm.ImageType   = UploadType.Img;
                addId          = SourceMaterialHelper.Create(sm);
            }


            Hashtable hash = new Hashtable();

            hash["error"] = 0;
            hash["url"]   = fileUrl;
            hash["id"]    = addId;
            context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
            context.Response.Write(JsonMapper.ToJson(hash));
            context.Response.End();
        }