Ueditor在MVC中上传文件和远程图片下载的脚本

[HttpPost]
public ActionResult UpImage(long id = 0) {
    //上传配置
    const int size = 2; // 文件大小限制，单位MB
    string[] filetype = { ".gif", ".png", ".jpg", ".jpeg", ".bmp" }; //文件允许格式
    var savePath = string.Format("/upload/taobao/{0}/", id); //保存文件地址
    IoHelper.Folder(savePath);

    var tmp = "{{'url':'{0}','title':'" + Request.Form["pictitle"] + "','original':'" + Request.Form["fileName"] + "','state':'{1}'}}";

    try {
        var file = Request.Files[0];
        if (file == null || file.ContentLength < 100)
            return Content(string.Format(tmp, "", "请选择上传文件！"));

        var temp = file.FileName;
        var ext = IoHelper.Ext(temp);

        if (!filetype.Contains(ext)) // 格式验证
            return Content(string.Format(tmp, "", "不允许的文件类型！"));

        if (file.ContentLength > size * 1024 * 1024) // 大小验证
            return Content(string.Format(tmp, "", "文件大小超出网站限制！"));

        savePath += temp.Md5() + ext;
        file.SaveAs(IoHelper.MapPath(savePath));
        return Content(string.Format(tmp, savePath, "上传成功！"));
    } catch (Exception e) {
        LogHelper.GetInstance().WriteToLog(e);
        return Content(string.Format(tmp, "", "上传失败！"));
    }
}

[HttpPost]
public ActionResult GetImage(long id = 0) {
    var savePath = string.Format("/upload/taobao/{0}/", id); //保存文件地址
    IoHelper.Folder(savePath); // 创建保存位置

    string[] filetype = { ".gif", ".png", ".jpg", ".jpeg", ".bmp" };             //文件允许格式
    const int fileSize = 3000; //文件大小限制，单位kb

    var uri = Server.HtmlEncode(Request["upfile"]);
    uri = uri.Replace("&amp;", "&");
    var imgUrls = Regex.Split(uri, "ue_separate_ue", RegexOptions.IgnoreCase);

    var tmpNames = new ArrayList();
    var wc = new WebClient();

    try {
        for (int i = 0, len = imgUrls.Length; i < len; i++) {
            var imgUrl = imgUrls[i];

            if (imgUrl.Substring(0, 7) != "http://") {
                tmpNames.Add("url error");
                continue;
            }

            var currentType = IoHelper.Ext(imgUrl);
            if (!filetype.Contains(currentType)) { // 格式验证
                tmpNames.Add("ext error");
                continue;
            }

            var res = (HttpWebResponse)WebRequest.Create(imgUrl).GetResponse();
            if (res.ResponseUri.Scheme.ToLower().Trim() != "http") { // http 检测
                tmpNames.Add("http error");
                continue;
            }

            if (res.ContentLength > fileSize * 1024) { //大小验证
                tmpNames.Add("size error");
                continue;
            }

            if (res.StatusCode != HttpStatusCode.OK) { // 死链验证
                tmpNames.Add("status error");
                continue;
            }
            //检查mime类型
            if (!res.ContentType.Contains("image")) {
                tmpNames.Add("type error");
                continue;
            }
            res.Close();

            var imgPath = savePath + imgUrl.Md5() + currentType;
            tmpNames.Add(imgPath);

            if (IoHelper.Exists(imgPath))
                continue;

            //写入文件
            wc.DownloadFile(imgUrl, IoHelper.MapPath(imgPath));
        }
    } catch (Exception ex) {
        LogHelper.GetInstance().WriteToLog(ex);
        tmpNames.Add("error ex");
    } finally {
        wc.Dispose();
    }
    return Content("{url:'" + ConverToString(tmpNames) + "',tip:'远程图片抓取成功！',srcUrl:'" + uri + "'}");
}

//集合转换字符串
private static string ConverToString(ArrayList tmpNames) {
    var str = String.Empty;
    for (int i = 0, len = tmpNames.Count; i < len; i++) {
        str += tmpNames[i] + "ue_separate_ue";
        if (i == tmpNames.Count - 1)
            str += tmpNames[i];
    }
    return str;
}