除了3天就會失效的臨時素材外,開發者有時需要永久保存一些素材,屆時就可以通過本接口新增永久素材。
最近更新,永久圖片素材新增後,將帶有URL返回給開發者,開發者可以在騰訊系域名內使用(騰訊系域名外使用,圖片將被屏蔽)。
請注意:
先來看我自己自定義的後台永久素材管理效果圖,如下:
再看看微信官網後台上的顯示界面,同步的哦!
首先我們來分析一下步驟:
第一步:如果想讓圖片在自己的頁面顯示,首先得先建個實體類吧,用來存儲素材的信息吧
/// <summary> /// 微信永久素材實體類,用於保存永久素材上傳至微信服務器後返回的數據 /// </summary> public class WxSuCaiInfo { public int SuCaiId { get; set; }//自增列序號 public string SuCaiUrl { get; set; }// 存儲文件名 public string SuCaiType { get; set; }//素材類型,可分為image,voice,video,thumb(縮略圖) public string SuCaiTitle { get; set; }//圖文消息的標題 public string SuCaiDigest { get; set; }//圖文消息的摘要 public string SuCaiauthor { get; set; }//圖文消息的作者 public string SuCaishow_cover_pic { get; set; }//圖文消息是否顯示封面.保存0或1 public string SuCaicontent { get; set; }//圖文消息的正文內容 public string SuCaicontent_source_url { get; set; }//圖文消息的原文鏈接 public string media_ID { get; set; }//上傳至微信服務器後,返回的永久mediaID public string Url { get; set; }//上傳至微信服務器後,返回的圖片URL,僅圖片才會返回此屬性 public string uploadDate { get; set; }//上傳日期時間 }
第二步:上傳圖片至微信服務器,成功後將返回的media_id和url兩個字段數據和其他字段數據一並保存到本地服務器,上傳的代碼如下:
/// <summary> /// 上傳圖片至微信服務器,並且本地也保存一份 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void LinBtnUploadImg_Click(object sender, EventArgs e) { if (this.FileUploadImage.HasFile) { string fileContentType = FileUploadImage.PostedFile.ContentType; if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/png" || fileContentType == "image/x-png" || fileContentType == "image/jpeg" || fileContentType == "image/pjpeg") { int fileSize = this.FileUploadImage.PostedFile.ContentLength; if (fileSize <= 2097152) { string fileName = this.FileUploadImage.PostedFile.FileName; // 客戶端文件路徑 string filepath = FileUploadImage.PostedFile.FileName; //得到的是文件的完整路徑,包括文件名,如:C:\Documents and Settings\Administrator\My Documents\My Pictures\20022775_m.jpg //string filepath = FileUpload1.FileName; //得到上傳的文件名20022775_m.jpg string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);//20022775_m.jpg string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服務器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg //把圖片上傳至本地服務器 this.FileUploadImage.PostedFile.SaveAs(serverpath);//將上傳的文件另存為 //上傳圖片素材至微信服務器,永久保存 WeiXinServer wxs = new WeiXinServer(); ///從緩存讀取accesstoken string Access_token = Cache["Access_token"] as string; if (Access_token == null) { //如果為空,重新獲取 Access_token = wxs.GetAccessToken(); //設置緩存的數據7000秒後過期 Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration); } string Access_tokento = Access_token.Substring(17, Access_token.Length - 37); string url = string.Format("http://api.weixin.qq.com/cgi-bin/material/add_material?access_token={0}&type={1}", Access_tokento,"image"); try { string res = HttpUploadFile(url, serverpath); //判斷res結果集裡面是否包含media_id if (res.Contains("media_id")) { //如果能進行到這裡,那說明圖片已經上傳至微信服務器,是永久素材哦, //開始解析json串,使用前需要引用Newtonsoft.json.dll文件 JObject jsonObj = JObject.Parse(res); //圖片上傳成功後,返回的是兩個字段,media_id和url //將兩個字段開始存入數據庫,保存數據,方便獲取列表的時候直接從本地服務器讀取 WxSuCaiInfo wsc = new WxSuCaiInfo(); wsc.SuCaiUrl = filename;//注意,這裡保存的圖片名稱 wsc.SuCaiType = "image";//文件類型 wsc.media_ID = jsonObj["media_id"].ToString();//這個屬性保存的是微信返回的media_id wsc.Url = jsonObj["url"].ToString();//這個屬性保存的才是微信返回的url wsc.uploadDate = System.DateTime.Now.ToString();//記錄當前文件上傳日期時間 //存入數據庫 WxSuCaiService wscs = new WxSuCaiService(); int num = wscs.AddWxSuCaiInfo(wsc); if (num > 0) { Response.Write("<script>alert('上傳圖片素材成功!');location='WxSuCaiMannageImageList.aspx';</script>"); } else { Response.Write("<script>alert('上傳圖片素材失敗!');location='WxSuCaiMannageImageList.aspx';</script>"); } } } catch(Exception ex) { Response.Write(ex.Message.ToString()); } } else { Response.Write("<script>alert('上傳文件不能大於2M!')</script>"); } } else { Response.Write("<script>alert('只支持BMP,GIF,PNG,JPG,JPEG格式的圖片!')</script>"); } } else { Response.Write("<script>alert('請選擇圖片!')</script>"); } }
走到這其實效果已經出來了,接下來看最後一步就是刪除選中的素材,刪除微信遠程服務器的數據--再刪除本地服務器的數據,有人問難道這個還有順序?
其實你可以想象,如果微信服務器的圖片沒有刪除成功,你先把本地服務器的圖片刪除了,那就和官網同步不了了。
第三步:刪除素材
/// <summary> /// 全選全不選 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void CheckAll_CheckedChanged(object sender, EventArgs e) { foreach (DataListItem item in this.DLSuCaiImageList.Items) { CheckBox checkIn = item.FindControl("CheckIn") as CheckBox; checkIn.Checked = CheckAll.Checked; } } /// <summary> /// 刪除選中項 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void LinkBtnDeleteSelected_Click(object sender, EventArgs e) { Boolean ischeck = false; foreach (DataListItem item in this.DLSuCaiImageList.Items) { CheckBox checkIn = item.FindControl("CheckIn") as CheckBox; if (checkIn.Checked) { ischeck = true; Label lbSuCaiId = item.FindControl("lbSuCaiId") as Label; Label lbSuCaiUrl = item.FindControl("lbSuCaiUrl") as Label; Label lbmedia_ID = item.FindControl("lbmedia_ID") as Label; //刪除微信服務器上的圖片 WeiXinServer wxs = new WeiXinServer(); string res = ""; ///從緩存讀取accesstoken string Access_token = Cache["Access_token"] as string; if (Access_token == null) { //如果為空,重新獲取 Access_token = wxs.GetAccessToken(); //設置緩存的數據7000秒後過期 Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration); } string Access_tokento = Access_token.Substring(17, Access_token.Length - 37); string posturl = "https://api.weixin.qq.com/cgi-bin/material/del_material?access_token=" + Access_tokento; //POST數據例子: POST數據例子:{"media_id":MEDIA_ID} string media_id = lbmedia_ID.Text.ToString(); string postData = "{\"media_id\":\"" + media_id + "\"}"; res = wxs.GetPage(posturl, postData); if (res.Contains("errcode")) { //開始解析json串,使用前需要引用Newtonsoft.json.dll文件 JObject jsonObj = JObject.Parse(res); if (jsonObj["errcode"].ToString().Equals("0")) { ///獲取本地服務器的路徑 string serverPathss = Server.MapPath("~/WeiXinImg/") + lbSuCaiUrl.Text.ToString(); //驗證本地服務的路徑是否存在該圖片 if (File.Exists(serverPathss)) { //如果存在就刪除 File.Delete(serverPathss); } WxSuCaiService wscs = new WxSuCaiService(); //通過media_id刪除本地服務器數據庫記錄 int num = wscs.DeleteWxSuCaiInfo(lbmedia_ID.Text.ToString()); if (num > 0) { Response.Write("<script>alert('圖片素材刪除成功!');location='WxSuCaiMannageImageList.aspx';</script>"); } else { Response.Write("<script>alert('微信服務器圖片刪除成功!本地服務器圖片素材刪除失敗!');location='WxSuCaiMannageImageList.aspx';</script>"); } } } } } if (!ischeck) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請先選中刪除項!!!')", true); return; } }
最後是頁面的代碼一並奉上,大家仔細研究。
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <link href="css/style.css" rel="Stylesheet" type="text/css" /> <style type="text/css"> .meun { width:1100px; height:40px; margin-left:20px; line-height:40px; margin-top:10px;border-bottom:1px solid #d6d6d6; } .meun ul { padding:0px; margin:0px; } .meun ul li{ float:left; width:100px; text-align:center;list-style:none; } .meun ul li:hover{ border-bottom:3px solid #ecd9df; cursor:pointer; } a:hover { color:#000; } .checkedstyle { border-bottom:3px solid #208008; } .meun_imglist { width:1050px; min-height:300px; border:1px solid #d6d6d6; margin-top:20px; margin-left:35px; margin-bottom:30px; } .uploadstyle { width:300px; background-image:url('images/inputbg.gif'); background-repeat:repeat-x; height:35px; border:1px solid #d6d6d6; float:left; margin-bottom:10px; line-height:35px; } .CheckAll { float:left; padding:5px; } .CheckIn { float:left; padding:2px; } .DLSuCaiImageList { margin-top:10px; margin-left:10px; } </style> </head> <body> <form id="form1" runat="server"> <div class="place"> <span>位置:</span> <ul class="placeul"> <li><a href="WelCome.aspx" target="rightFrame">首頁</a></li> <li>微信管理</li> <li>德橋員工服務中心--素材管理</li> </ul> </div> <div style="height:30px; line-height:30px; margin-top:10px; margin-left:45px;"><span style="float:left; font-size:16px;">素材管理</span><span style="color:red; float:left; margin-left:20px;">永久素材和微信官網同步,您在這裡所操作的任何一項,將影響到官網後台素材管理,謹慎操作!</span></div> <div class="meun"> <ul> <li><a href="WxSuCaiManageList.aspx">圖文消息</a></li> <li class="checkedstyle"><a href="WxSuCaiMannageImageList.aspx">圖片庫</a></li> <li><a href="#">語音</a></li> <li><a href="#">視頻</a></li> </ul> </div> <div class="meun_imglist"> <div style="margin:5px auto 10px 10px; height:36px; line-height:36px;"> <asp:FileUpload ID="FileUploadImage" CssClass="uploadstyle" runat="server" /> <asp:LinkButton ID="LinBtnUploadImg" runat="server" OnClick="LinBtnUploadImg_Click"><span style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; margin-bottom:10px; font-weight:bold; text-align:center; float:left; margin-left:10px; color:#fff;">上傳</span></asp:LinkButton> <span style="margin-left:30px; color:red;" > 支持jpg,gif,png,bmp格式圖片,大小2M內,如上傳成功後,圖片未能顯示,請將圖片重新命名後再嘗試上傳.</span> </div> <div style=" clear:both;line-height:35px; margin:10px auto auto auto; height:35px; width:1030px; background-color:#f6f6f6; border-radius:5px; border-bottom:1px solid #d6d6d6;"> <asp:CheckBox ID="CheckAll" CssClass="CheckAll" AutoPostBack="true" runat="server" OnCheckedChanged="CheckAll_CheckedChanged" /> <span style="float:left; padding:3px;">全選</span> <asp:LinkButton ID="LinkBtnDeleteSelected" runat="server" OnClick="LinkBtnDeleteSelected_Click"><span style="width:111px; height:25px; line-height:25px; font-weight:bold; text-align:center; float:left; margin-left:15px; color:#000; background-color:#fff; margin-top:5px; border:1px solid #ecd9df; border-radius:3px;">刪除選中</span></asp:LinkButton> </div> <asp:DataList ID="DLSuCaiImageList" CssClass="DLSuCaiImageList" runat="server" RepeatColumns="6"> <ItemTemplate> <div style="width:150px; height:180px; margin-right:22px;margin-bottom:15px; border:1px solid #d9d9d9;"> <img src='../WeiXinImg/<%# Eval("SuCaiUrl") %>' style="height:120px; width:150px; border:0px;" /> <div style="width:150px;height:25px; line-height:25px; text-indent:3px; border-top:1px solid #d9d9d9;"> <asp:CheckBox ID="CheckIn" CssClass="CheckIn" runat="server" /> <asp:Label ID="lbSuCaiUrl" ToolTip='<%# Eval("SuCaiUrl")%>' runat="server" Text='<%# Eval("SuCaiUrl").ToString().Length>8?Eval("SuCaiUrl").ToString().Substring(0,8)+"...":Eval("SuCaiUrl").ToString() %>'></asp:Label> </div> <div style=" clear:both; width:150px;height:25px; line-height:25px; text-indent:5px; border-top:1px solid #d9d9d9;"> <%# Eval("uploadDate").ToString().Length>20?Eval("uploadDate").ToString().Substring(0,20)+"...":Eval("uploadDate").ToString() %> <asp:Label ID="lbSuCaiId" runat="server" Visible="false" Text='<%# Eval("SuCaiId") %>'></asp:Label> <asp:Label ID="lbmedia_ID" runat="server" Visible="false" Text='<%# Eval("media_ID") %>'></asp:Label> </div> </div> </ItemTemplate> </asp:DataList> </div> </form> </body> </html>
其他素材上傳都類似,就不一一介紹了。
新建圖文素材界面如下:
從圖片庫選擇圖片素材如下:
這是就是從已上傳過的圖片庫中選擇的,和圖片素材管理界面的功能基本相似,只不過多了一個確認選擇的按鈕,因為確認選擇了之後,要關閉本頁,回到新建圖文頁面,主要代碼:
/// <summary> /// 確認選擇,選中之後,跳轉至新建圖文頁面 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void LinkBtnSubMitSelected_Click(object sender, EventArgs e) { Boolean bools = false; int num = 0; foreach (DataListItem item in this.DLSuCaiImageList.Items) { CheckBox checkIn = item.FindControl("CheckIn") as CheckBox; if (checkIn.Checked) { num += 1; bools = true; } } if (!bools) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請選擇一個圖片素材!!!')", true); return; } if (num >= 2) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('您只能選擇一個圖片素材!');", true); return; } else { foreach (DataListItem item in this.DLSuCaiImageList.Items) { CheckBox checkIn = item.FindControl("CheckIn") as CheckBox; if (checkIn.Checked) { ///獲取選中圖片media_id Label lbmedia_ID = item.FindControl("lbmedia_ID") as Label; Session["imgmedia_id"] = lbmedia_ID.Text.ToString(); Response.Write("<script>alert('已選擇!');window.opener.location.reload();window.close();</script>"); } } } }
新建圖文的頁面在接收的時候可以這樣:
if (Session["imgmedia_id"] != null) { WxSuCaiService wscs = new WxSuCaiService(); WxSuCaiInfo wscinfo = wscs.GetWxSuCaiInfo(Session["imgmedia_id"].ToString()); if(wscinfo!=null) { this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString(); this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString(); this.ImgTuWen2.Visible = true; Session["imgmedia_id"] = wscinfo.media_ID.ToString();//圖片的media_id Session["fileNameimg"] = wscinfo.SuCaiUrl.ToString();//圖片的文件名稱 } }
最後新建圖文信息的效果圖如下:
官方後台如下:
關於編輯圖文信息的關鍵代碼如下:
/// <summary> /// 綁定事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void DLMpNewsList_ItemDataBound(object sender, DataListItemEventArgs e) { if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem) { LinkButton LinkBtnDeleteSucai = e.Item.FindControl("LinkBtnDeleteSucai") as LinkButton; LinkBtnDeleteSucai.Attributes.Add("OnClick","return confirm('您確定刪除該圖文素材???刪除後將和微信官網同步刪除!!')"); HyperLink HyperLinkEdit = e.Item.FindControl("HyperLinkEdit") as HyperLink; HyperLinkEdit.Attributes.Add("OnClick", "return confirm('即將進入編輯模式!!是否執行下一步操作??')"); Label lbmedia_ID = e.Item.FindControl("lbmedia_ID") as Label; HyperLinkEdit.NavigateUrl = "WxNewTuWen.aspx?media_id=" + lbmedia_ID.Text.ToString();//把圖文消息的media_id傳參到新建圖文界面 } }
新建圖文頁面關鍵代碼如下:
if(!Page.IsPostBack) { ///編輯模式 if (Request.QueryString["media_id"] != null) { string media_id = Request.QueryString["media_id"].ToString(); Session["sucaimedia_id"] = media_id; WxSuCaiService wscs = new WxSuCaiService(); WxSuCaiInfo wscinfo = wscs.GetWxSuCaiInfo(media_id); if (wscinfo != null) { this.txttuwen_title.Value = wscinfo.SuCaiTitle.ToString(); if (wscinfo.SuCaiTitle.ToString().Length > 15) { this.biaoti_yulan.InnerText = wscinfo.SuCaiTitle.ToString().Substring(0, 15) + "..."; } else { this.biaoti_yulan.InnerText = wscinfo.SuCaiTitle.ToString(); } this.txttuwen_author.Value = wscinfo.SuCaiauthor.ToString(); this.txtzhaiyao.InnerText = wscinfo.SuCaiDigest.ToString(); this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString(); this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString(); this.ImgTuWen2.Visible = true; Session["imgmedia_id"] = wscinfo.SuCaithumb_media_id.ToString(); this.LinkBtnDeleteImg.Visible = true; if (!String.IsNullOrWhiteSpace(wscinfo.SuCaicontent_source_url.ToString())) { this.txtYuanWenUrl.Text = wscinfo.SuCaicontent_source_url.ToString(); this.txtYuanWenUrl.Visible = true; this.CheckYuanWen.Checked = true; } this.txtYuanWenUrl.Text = wscinfo.SuCaicontent_source_url.ToString(); this.tbContent.InnerText = wscinfo.SuCaicontent.ToString(); if (wscinfo.SuCaishow_cover_pic.ToString().Equals("1")) { this.CheckFengMianShow.Checked = true; } else { this.CheckFengMianShow.Checked = false; } } } }
編輯提交關鍵代碼如下:
/// <summary> /// 保存圖文素材和修改按鈕公用 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void LinkBtnSaveYongjiu_Click(object sender, EventArgs e) { //非空驗證 if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString())) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入圖文標題!');", true); return; } if (this.ImgTuWen2.ImageUrl.ToString().Equals("")) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必須上傳一張圖片!');", true); return; } if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString())) { ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入正文內容!');", true); return; } //對各項進行賦值 WeiXinServer wxs = new WeiXinServer(); ///從緩存讀取accesstoken string Access_token = Cache["Access_token"] as string; if (Access_token == null) { //如果為空,重新獲取 Access_token = wxs.GetAccessToken(); //設置緩存的數據7000秒後過期 Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration); } string Access_tokento = Access_token.Substring(17, Access_token.Length - 37); //根據session判斷media_id是否為空,也可根據request.queryString["media_id"]進行判斷是否為空 if (Session["sucaimedia_id"] != null) { //執行更新操作 //{ // "media_id":MEDIA_ID, // "index":INDEX, // "articles": { // "title": TITLE, // "thumb_media_id": THUMB_MEDIA_ID, // "author": AUTHOR, // "digest": DIGEST, // "show_cover_pic": SHOW_COVER_PIC(0 / 1), // "content": CONTENT, // "content_source_url": CONTENT_SOURCE_URL // } //} string isshow_cover_pic = ""; if (this.CheckFengMianShow.Checked) { isshow_cover_pic = "1"; } else { isshow_cover_pic = "0"; } string description = NoHTML(this.tbContent.InnerText.ToString()); string postData = "{\"media_id\":\"" + Session["sucaimedia_id"].ToString() + "\",\"index\":\"0\" ,\"articles\":{\"title\":\"" + this.txttuwen_title.Value.ToString() + "\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() + "\",\"author\":\"" + this.txttuwen_author.Value.ToString() + "\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() + "\",\"show_cover_pic\":\"" + isshow_cover_pic + "\",\"content\":\"" + description + "\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() + "\"}}"; ///修改永久圖文素材 string url = string.Format("https://api.weixin.qq.com/cgi-bin/material/update_news?access_token={0}", Access_tokento); string jsonres = PostUrl(url, postData); if (jsonres.Contains("errcode")) { //使用前需要引用Newtonsoft.json.dll文件 JObject jsonObj = JObject.Parse(jsonres); if (jsonObj["errcode"].ToString().Equals("0")) { //修改本地數據 //保存數據,方便獲取列表的時候直接從本地服務器讀取 WxSuCaiInfo wsc = new WxSuCaiInfo(); wsc.SuCaiUrl = Session["fileNameimg"].ToString();//注意,這裡保存的圖片名稱 wsc.SuCaiTitle = this.txttuwen_title.Value.ToString();//圖文消息的標題 wsc.SuCaiDigest = this.txtzhaiyao.InnerText.ToString();//圖文消息的摘要 wsc.SuCaithumb_media_id = Session["imgmedia_id"].ToString();//圖文的消息封面media_id wsc.SuCaiauthor = this.txttuwen_author.Value.ToString(); wsc.SuCaishow_cover_pic = isshow_cover_pic; wsc.SuCaicontent = description; wsc.SuCaicontent_source_url = this.txtYuanWenUrl.Text.ToString(); wsc.uploadDate = System.DateTime.Now.ToString();//記錄當前文件保存圖文素材日期時間 //修改數據庫信息 WxSuCaiService wscs = new WxSuCaiService(); int num = wscs.UpdateWxSuCaiInfo(Session["sucaimedia_id"].ToString(), wsc); if (num > 0) { Session["sucaimedia_id"] = null; Response.Write("<script>alert('圖文素材修改成功!');location='WxSuCaiManageList.aspx';</script>"); } else { Response.Write("<script>alert('圖文素材修改失敗!');</script>"); } } } } else { //新增圖文素材 } }
需注意:新建圖文頁面和修改圖文頁面是公用的一個頁面.......
編輯提交按鈕和保存按鈕是公用的一個按鈕.....
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