/// <summary>
        /// 更新永久图文素材
        /// </summary>
        /// <param name="keyValue"></param>
        public void UpdateForeverNews(string keyValue)
        {
            long   id            = Convert.ToInt64(keyValue);
            string appId         = WxOperatorProvider.Provider.GetCurrent().AppId;
            var    specification = new Specification <WxNews>().FetchStrategy.Include(p => p.WxNewsItems.Select(e => e.Thumb));
            WxNews wxNews        = wxNewsRepository.Get(id, specification);

            NewsModel[] newsModel = new NewsModel[wxNews.WxNewsItems.Count()];
            var         index     = 0;

            foreach (WxNewsItem wxNewsItem in wxNews.WxNewsItems)
            {
                newsModel[index]                       = new NewsModel();
                newsModel[index].title                 = wxNewsItem.Title;
                newsModel[index].author                = wxNewsItem.Author;
                newsModel[index].content               = wxNewsItem.Content;
                newsModel[index].content_source_url    = wxNewsItem.ContentSourceUrl;
                newsModel[index].digest                = wxNewsItem.Digest;
                newsModel[index].need_open_comment     = wxNewsItem.NeedOpenComment;
                newsModel[index].only_fans_can_comment = wxNewsItem.OnlyFansCanComment;
                newsModel[index].show_cover_pic        = wxNewsItem.ShowCoverPic.ToString();
                newsModel[index].thumb_media_id        = wxNewsItem.Thumb.MediaId;
                newsModel[index].thumb_url             = wxNewsItem.Thumb.MediaUrl;
                index++;
            }
            if (!string.IsNullOrEmpty(wxNews.MediaId))
            {
                for (var i = 0; i < newsModel.Length; i++)
                {
                    var wxJsonResult = MediaApi.UpdateForeverNews(appId, wxNews.MediaId, i, newsModel[i], 10000);
                }
            }
        }