asp.net微信开发(永久素材管理)


除了3天就会失效的临时素材外,开发者有时需要永久保存一些素材,届时就可以通过本接口新增永久素材。

最近更新,永久图片素材新增后,将带有URL返回给开发者,开发者可以在腾讯系域名内使用(腾讯系域名外使用,图片将被屏蔽)。

请注意:

  • 1、新增的永久素材也可以在公众平台官网素材管理模块中看到
  • 2、永久素材的数量是有上限的,请谨慎新增。图文消息素材和图片素材的上限为5000,其他类型为1000
  • 3、素材的格式大小等要求与公众平台官网一致。具体是,图片大小不超过2M,支持bmp/png/jpeg/jpg/gif格式,语音大小不超过5M,长度不超过60秒,支持mp3/wma/wav/amr格式
  • 4、调用该接口需https协议

先来看我自己自定义的后台永久素材管理效果图,如下:

再看看微信官网后台上的显示界面,同步的哦!

首先我们来分析一下步骤:
第一步:如果想让图片在自己的页面显示,首先得先建个实体类吧,用来存储素材的信息吧

/// <summary>
 /// 微信永久素材实体类,用于保存永久素材上传至微信服务器后返回的数据
 /// </summary>
 public class WxSuCaiInfo
 {
  public int SuCaiId { get; set; }//自增列序号

  public string SuCaiUrl { get; set; }// 存储文件名

  public string SuCaiType { get; set; }//素材类型,可分为image,voice,video,thumb(缩略图)

  public string SuCaiTitle { get; set; }//图文消息的标题

  public string SuCaiDigest { get; set; }//图文消息的摘要


  public string SuCaiauthor { get; set; }//图文消息的作者
  public string SuCaishow_cover_pic { get; set; }//图文消息是否显示封面.保存0或1

  public string SuCaicontent { get; set; }//图文消息的正文内容
  public string SuCaicontent_source_url { get; set; }//图文消息的原文链接


  public string media_ID { get; set; }//上传至微信服务器后,返回的永久mediaID


  public string Url { get; set; }//上传至微信服务器后,返回的图片URL,仅图片才会返回此属性

  public string uploadDate { get; set; }//上传日期时间


 }

第二步:上传图片至微信服务器,成功后将返回的media_id和url两个字段数据和其他字段数据一并保存到本地服务器,上传的代码如下:

 /// <summary>
  /// 上传图片至微信服务器,并且本地也保存一份
  /// </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;
      // 客户端文件路径
      string filepath = FileUploadImage.PostedFile.FileName; //得到的是文件的完整路径,包括文件名,如:C:\Documents and Settings\Administrator\My Documents\My Pictures\20022775_m.jpg 
      //string filepath = FileUpload1.FileName;    //得到上传的文件名20022775_m.jpg 
      string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);//20022775_m.jpg 
      string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg

      //把图片上传至本地服务器
      this.FileUploadImage.PostedFile.SaveAs(serverpath);//将上传的文件另存为


      //上传图片素材至微信服务器,永久保存

      WeiXinServer wxs = new WeiXinServer();

      ///从缓存读取accesstoken
      string Access_token = Cache["Access_token"] as string;

      if (Access_token == null)
      {
       //如果为空,重新获取
       Access_token = wxs.GetAccessToken();

       //设置缓存的数据7000秒后过期
       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);
       //判断res结果集里面是否包含media_id
       if (res.Contains("media_id"))
       {
        //如果能进行到这里,那说明图片已经上传至微信服务器,是永久素材哦,
        //开始解析json串,使用前需要引用Newtonsoft.json.dll文件
        JObject jsonObj = JObject.Parse(res);

        

        //图片上传成功后,返回的是两个字段,media_id和url


        //将两个字段开始存入数据库,保存数据,方便获取列表的时候直接从本地服务器读取
        WxSuCaiInfo wsc = new WxSuCaiInfo();

        wsc.SuCaiUrl = filename;//注意,这里保存的图片名称

        wsc.SuCaiType = "image";//文件类型

        wsc.media_ID = jsonObj["media_id"].ToString();//这个属性保存的是微信返回的media_id

        wsc.Url = jsonObj["url"].ToString();//这个属性保存的才是微信返回的url

        wsc.uploadDate = System.DateTime.Now.ToString();//记录当前文件上传日期时间

        //存入数据库
        WxSuCaiService wscs = new WxSuCaiService();


        int num = wscs.AddWxSuCaiInfo(wsc);

        if (num > 0)
        {
         Response.Write("<script>alert('上传图片素材成功!');location='WxSuCaiMannageImageList.aspx';</script>");
        }
        else
        {
         Response.Write("<script>alert('上传图片素材失败!');location='WxSuCaiMannageImageList.aspx';</script>");
        }
       }
      }
      catch(Exception ex)
      {
       Response.Write(ex.Message.ToString());
      }
     }
     else
     {
      Response.Write("<script>alert('上传文件不能大于2M!')</script>");
     }

    }
    else
    {
     Response.Write("<script>alert('只支持BMP,GIF,PNG,JPG,JPEG格式的图片!')</script>");
    }
   }
   else
   {
    Response.Write("<script>alert('请选择图片!')</script>");
   }
  }

走到这其实效果已经出来了,接下来看最后一步就是删除选中的素材,删除微信远程服务器的数据--再删除本地服务器的数据,有人问难道这个还有顺序?
其实你可以想象,如果微信服务器的图片没有删除成功,你先把本地服务器的图片删除了,那就和官网同步不了了。
第三步:删除素材

 /// <summary>
  /// 全选全不选
  /// </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>
  /// 删除选中项
  /// </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;
     
     //删除微信服务器上的图片
     WeiXinServer wxs = new WeiXinServer();
     string res = "";

     ///从缓存读取accesstoken
     string Access_token = Cache["Access_token"] as string;

     if (Access_token == null)
     {
      //如果为空,重新获取
      Access_token = wxs.GetAccessToken();

      //设置缓存的数据7000秒后过期
      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数据例子: POST数据例子:{"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"))
     {
      //开始解析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"))
      {

       ///获取本地服务器的路径
       string serverPathss = Server.MapPath("~/WeiXinImg/") + lbSuCaiUrl.Text.ToString();
       //验证本地服务的路径是否存在该图片
       if (File.Exists(serverPathss))
       {
        //如果存在就删除
        File.Delete(serverPathss);
       }

       WxSuCaiService wscs = new WxSuCaiService();
       //通过media_id删除本地服务器数据库记录
       int num = wscs.DeleteWxSuCaiInfo(lbmedia_ID.Text.ToString());
       if (num > 0)
       {
        Response.Write("<script>alert('图片素材删除成功!');location='WxSuCaiMannageImageList.aspx';</script>");
       }
       else
       {
        Response.Write("<script>alert('微信服务器图片删除成功!本地服务器图片素材删除失败!');location='WxSuCaiMannageImageList.aspx';</script>");
       }
      }
     } 
    }
   }
   if (!ischeck)
   {
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请先选中删除项!!!')", true);
    return;
   }
  }

最后是页面的代码一并奉上,大家仔细研究。

<!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">首页</a></li>
   <li>微信管理</li>
   <li>德桥员工服务中心--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;">永久素材和微信官网同步,您在这里所操作的任何一项,将影响到官网后台素材管理,谨慎操作!</span></div>
  <div class="meun">
   <ul>
    <li><a href="WxSuCaiManageList.aspx">图文消息</a></li>
    <li class="checkedstyle"><a href="WxSuCaiMannageImageList.aspx">图片库</a></li>
    <li><a href="#">语音</a></li>
    <li><a href="#">视频</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;">上传</span></asp:LinkButton>
    <span style="margin-left:30px; color:red;" >  支持jpg,gif,png,bmp格式图片,大小2M内,如上传成功后,图片未能显示,请将图片重新命名后再尝试上传.</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;">全选</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;">删除选中</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>

其他素材上传都类似,就不一一介绍了。
新建图文素材界面如下:

从图片库选择图片素材如下:

这是就是从已上传过的图片库中选择的,和图片素材管理界面的功能基本相似,只不过多了一个确认选择的按钮,因为确认选择了之后,要关闭本页,回到新建图文页面,主要代码:

 /// <summary>
  /// 确认选择,选中之后,跳转至新建图文页面
  /// </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('请选择一个图片素材!!!')", true);
    return;
   }
   if (num >= 2)
   {
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('您只能选择一个图片素材!');", true);
    return;
   }
   else
   {
    foreach (DataListItem item in this.DLSuCaiImageList.Items)
    {
     CheckBox checkIn = item.FindControl("CheckIn") as CheckBox;

     if (checkIn.Checked)
     {
      ///获取选中图片media_id
      Label lbmedia_ID = item.FindControl("lbmedia_ID") as Label;
      Session["imgmedia_id"] = lbmedia_ID.Text.ToString();
      Response.Write("<script>alert('已选择!');window.opener.location.reload();window.close();</script>");
     }
    }
   }
  }

新建图文的页面在接收的时候可以这样:

 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();//图片的media_id
       Session["fileNameimg"] = wscinfo.SuCaiUrl.ToString();//图片的文件名称
      }


     }

最后新建图文信息的效果图如下:

官方后台如下:

关于编辑图文信息的关键代码如下:

 /// <summary>
  /// 绑定事件
  /// </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('您确定删除该图文素材???删除后将和微信官网同步删除!!')");


    HyperLink HyperLinkEdit = e.Item.FindControl("HyperLinkEdit") as HyperLink;

    HyperLinkEdit.Attributes.Add("OnClick", "return confirm('即将进入编辑模式!!是否执行下一步操作??')");


    Label lbmedia_ID = e.Item.FindControl("lbmedia_ID") as Label;


    HyperLinkEdit.NavigateUrl = "WxNewTuWen.aspx?media_id=" + lbmedia_ID.Text.ToString();//把图文消息的media_id传参到新建图文界面

   }
  }

新建图文页面关键代码如下:

 if(!Page.IsPostBack)
   {
    ///编辑模式
    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;
      }
     }
    }
   }

编辑提交关键代码如下:

/// <summary>
  /// 保存图文素材和修改按钮公用
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  protected void LinkBtnSaveYongjiu_Click(object sender, EventArgs e)
  {
   //非空验证
   if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
   {
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题!');", true);
    return;
   }
   if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
   {
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片!');", true);
    return;
   }
   if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
   {
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容!');", true);
    return;
   }

   //对各项进行赋值
   WeiXinServer wxs = new WeiXinServer();

   ///从缓存读取accesstoken
   string Access_token = Cache["Access_token"] as string;

   if (Access_token == null)
   {
    //如果为空,重新获取
    Access_token = wxs.GetAccessToken();

    //设置缓存的数据7000秒后过期
    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);


   
 //根据session判断media_id是否为空,也可根据request.queryString["media_id"]进行判断是否为空
   if (Session["sucaimedia_id"] != null)
   {
    //执行更新操作

    //{
    // "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() +
    "\"}}";


    ///修改永久图文素材
    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"))
     {
      //修改本地数据
      //保存数据,方便获取列表的时候直接从本地服务器读取
      WxSuCaiInfo wsc = new WxSuCaiInfo();

      wsc.SuCaiUrl = Session["fileNameimg"].ToString();//注意,这里保存的图片名称

      wsc.SuCaiTitle = this.txttuwen_title.Value.ToString();//图文消息的标题

      wsc.SuCaiDigest = this.txtzhaiyao.InnerText.ToString();//图文消息的摘要

      wsc.SuCaithumb_media_id = Session["imgmedia_id"].ToString();//图文的消息封面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();//记录当前文件保存图文素材日期时间

      //修改数据库信息
      WxSuCaiService wscs = new WxSuCaiService();

      int num = wscs.UpdateWxSuCaiInfo(Session["sucaimedia_id"].ToString(), wsc);

      if (num > 0)
      {
       Session["sucaimedia_id"] = null;
       Response.Write("<script>alert('图文素材修改成功!');location='WxSuCaiManageList.aspx';</script>");
      }
      else
      {
       Response.Write("<script>alert('图文素材修改失败!');</script>");
      }

     }

    }

   }
   else
   {
    //新增图文素材
   }
  }

需注意:新建图文页面和修改图文页面是公用的一个页面.......

编辑提交按钮和保存按钮是公用的一个按钮.....

以上就是本文的全部内容,希望对大家的学习有所帮助。



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