asp.net微信开发（高级群发图文）


            上一篇介绍了如何群发文本消息，本篇将介绍如何群发图文信息，上传图文信息所需的素材，界面如下：



我们先看从素材库中获取图文素材的代码，界面：



素材列表，我是使用的repeater控件，

前台代码如下：







 <!--弹出选择素材窗口-->

  <div id="shownewgroup">

  <div class="closeLogin" style="height:40px; background-color:#ddd9ff; line-height:40px;"><span style="float:left; color:#000; font-size:14px; text-indent:5px;">选择素材</span>

  <span style="float:left;margin-left:20px;"><a href="WxNewTuWen.aspx" style="color:red;" onclick="hrefurl();" class="hrefurl">新建图文素材</a></span>

  <a class="closeloginpage"><img src="images/close1.png" alt="" /></a>  </div>

  

  <div style="height:455px; width:100%;">

  <asp:UpdatePanel ID="UpdatePanel2" runat="server">

   <ContentTemplate>

    <div style="width:100%; height:35px; margin:10px;"><asp:LinkButton ID="LinkBtnSelect" runat="server" OnClick="LinkBtnSelect_Click" ><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; float:left; line-height:35px; font-weight:bold; text-align:center;color:#fff;">确认选择</div></asp:LinkButton>

    <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkbtnRefresh" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkbtnRefresh_Click"><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">刷新</div></asp:LinkButton></span>

    <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkBtnDelete" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkBtnDelete_Click"><div style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">删除素材</div></asp:LinkButton></span>

    </div>

  <div style="word-wrap:break-word;" id="lbnewssucai" runat="server">

   <asp:Repeater ID="Repeatersucailist" runat="server" OnItemDataBound="Repeatersucailist_ItemDataBound">

   <ItemTemplate>

    <table style="width:100%; border-top:1px solid #edc9df; border-collapse:collapse; font-size:12px;" >

    <tr>

     <td style="width:100px;"><asp:Image ID="ImageUrl" CssClass="fenmianstyle2" runat="server" /></td>

     <td style="text-align:left; width:470px; ">

     <asp:Repeater ID="Repeatersucailist2" runat="server">

      <ItemTemplate>

      <ul style="margin:0px;padding:0px;">

       <li><%# Eval("title") %></li>

      </ul>

      </ItemTemplate>

     </asp:Repeater>

     </td>

     <td style="width:130px;">

     <asp:Label ID="lbUpate_time" runat="server" Text="Label"></asp:Label>

     </td>

     <td style="width:50px; text-align:center;">

     <asp:CheckBox ID="CheckIn" runat="server" />

     <asp:Label ID="lbmedia_id" runat="server" Visible="false" Text=""></asp:Label>

     </td>

    </tr>

    </table>

   </ItemTemplate> 

   </asp:Repeater>

   <div style="font-size:14px; height:30px; line-height:30px; text-indent:10px; border-top:1px solid #ced9df;">

   <span style="float:left;">本类型素材总数量为：</span><span style="float:left; color:red;"><asp:Label ID="lbtotal_count" runat="server" Text="0"></asp:Label></span>  

   <span style="float:left; margin-left:20px;">本次获取的素材数量为：</span><span style="float:left; color:red;"><asp:Label ID="lbitem_count" runat="server" Text="0"></asp:Label></span>

   </div>

  </div>

   </ContentTemplate>

  </asp:UpdatePanel>

  </div>

 </div>

 <div id="shownewgroupzhezhaoceng"></div>



后台代码如下：







 /// <summary>

 /// 绑定图文素材列表

 /// </summary>

 private void BindNewsSucaiList()

 {

  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 = "http://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=" + Access_tokento;





  //POST数据例子： POST数据例子：{"type":TYPE,"offset":OFFSET,"count":COUNT}



  string postData = "{\"type\":\"news\",\"offset\":\"0\",\"count\":\"20\"}";



  res = wxs.GetPage(posturl, postData);



  //使用前需要引用Newtonsoft.json.dll文件

  JObject jsonObj = JObject.Parse(res);



  int groupsnum = jsonObj["item"].Count();



  List<WxNewsSucaiIteminfo> newssucaiitemlist = new List<WxNewsSucaiIteminfo>();

  List<WxNewsSuCaiItemlistinfo> WxNewsSuCaiItemlist = new List<WxNewsSuCaiItemlistinfo>();

  for (int i = 0; i < groupsnum; i++)

  {

  WxNewsSucaiIteminfo newssucaiitem = new WxNewsSucaiIteminfo();

  newssucaiitem.media_id = jsonObj["item"][i]["media_id"].ToString();

  newssucaiitem.update_time = jsonObj["item"][i]["update_time"].ToString();

  newssucaiitem.total_count = jsonObj["total_count"].ToString();

  newssucaiitem.item_count = jsonObj["item_count"].ToString();



  newssucaiitemlist.Add(newssucaiitem);

  int news_itemcount = jsonObj["item"][i]["content"]["news_item"].Count();

  if (news_itemcount > 0)

  {

   for (int j = 0; j < news_itemcount; j++)

   {

   WxNewsSuCaiItemlistinfo wnscilinfo = new WxNewsSuCaiItemlistinfo();

   wnscilinfo.title = jsonObj["item"][i]["content"]["news_item"][j]["title"].ToString();

   wnscilinfo.thumb_media_id = jsonObj["item"][i]["content"]["news_item"][j]["thumb_media_id"].ToString();

   wnscilinfo.show_cover_pic = int.Parse(jsonObj["item"][i]["content"]["news_item"][j]["show_cover_pic"].ToString());

   wnscilinfo.author = jsonObj["item"][i]["content"]["news_item"][j]["author"].ToString();

   wnscilinfo.digest = jsonObj["item"][i]["content"]["news_item"][j]["digest"].ToString();

   wnscilinfo.content = jsonObj["item"][i]["content"]["news_item"][j]["content"].ToString();

   wnscilinfo.url = jsonObj["item"][i]["content"]["news_item"][j]["url"].ToString();

   wnscilinfo.content_source_url = jsonObj["item"][i]["content"]["news_item"][j]["content_source_url"].ToString();

   wnscilinfo.media_id = newssucaiitem.media_id.ToString();

   WxNewsSuCaiItemlist.Add(wnscilinfo);

   }

  }

  }

  Session["WxNewsSuCaiItemlist"] = WxNewsSuCaiItemlist;

  this.Repeatersucailist.DataSource = newssucaiitemlist;

  this.Repeatersucailist.DataBind();

 }





再来看看，新建单图文信息界面：





新建单图文上传封面，删除封面的代码如下：





 /// <summary>

 /// 

 /// </summary>上传图片文件

 /// <param name="sender"></param>

 /// <param name="e"></param>

 protected void LinkBtnFileUploadImg_Click(object sender, EventArgs e)

 {

  if (this.FileUploadImg.HasFile)

  {

  string fileContentType = FileUploadImg.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.FileUploadImg.PostedFile.ContentLength;



   if (fileSize <=2097152)

   {

   string fileName = this.FileUploadImg.PostedFile.FileName; 

   // 客户端文件路径

   string filepath = FileUploadImg.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 



   this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;

   this.ImgTuWen2.Visible = true;

   this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;

   this.FileUploadImg.PostedFile.SaveAs(serverpath);//将上传的文件另存为 

   this.LinkBtnDeleteImg.Visible = true;

   Session["fileNameimg"] = this.FileUploadImg.PostedFile.FileName;





   //上传临时图片素材至微信服务器，3天后微信服务器会自动删除



   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);





   //WebClient wx_upload = new WebClient();

   //wx_upload.Credentials = CredentialCache.DefaultCredentials;

   string url = string.Format("http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token={0}&type={1}", Access_tokento, "image");



   string result = HttpUploadFile(url, serverpath);



   if (result.Contains("media_id"))

   {

    //使用前需要引用Newtonsoft.json.dll文件

    JObject jsonObj = JObject.Parse(result);



    Session["imgmedia_id"] = jsonObj["media_id"].ToString();

   }





   Response.Write("<script>alert('上传图片成功！')</script>");

   }

   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格式的图片！')</script>");

  }

  }

  else

  {

  Response.Write("<script>alert('请选择图片！')</script>");

  }

 }

 /// <summary> 

 /// Http上传文件 

 /// </summary> 

 public static string HttpUploadFile(string url, string path)

 {

  // 设置参数 

  HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

  CookieContainer cookieContainer = new CookieContainer();

  request.CookieContainer = cookieContainer;

  request.AllowAutoRedirect = true;

  request.Method = "POST";

  string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线 

  request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;

  byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");

  byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");



  int pos = path.LastIndexOf("\\");

  string fileName = path.Substring(pos + 1);



  //请求头部信息 

  StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));

  byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());



  FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);

  byte[] bArr = new byte[fs.Length];

  fs.Read(bArr, 0, bArr.Length);

  fs.Close();



  Stream postStream = request.GetRequestStream();

  postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);

  postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);

  postStream.Write(bArr, 0, bArr.Length);

  postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);

  postStream.Close();



  //发送请求并获取相应回应数据 

  HttpWebResponse response = request.GetResponse() as HttpWebResponse;

  //直到request.GetResponse()程序才开始向目标网页发送Post请求 

  Stream instream = response.GetResponseStream();

  StreamReader sr = new StreamReader(instream, Encoding.UTF8);

  //返回结果网页（html）代码 

  string content = sr.ReadToEnd();

  return content;

 } 

 /// <summary>

 /// 删除图片

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 protected void LinkBtnDeleteImg_Click(object sender, EventArgs e)

 {

  string filename = Session["fileNameimg"].ToString();



  if (!string.IsNullOrEmpty(filename))//确保picPath有值并且不为空。

  {

  

  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 



  if (File.Exists(serverpath))

  {

   try

   {

   File.Delete(serverpath);

   this.ImgTuWen.ImageUrl = "weixinimg/fengmiandefault.jpg";

   this.ImgTuWen2.Visible = false;

   this.ImgTuWen2.ImageUrl = "";

   Session["fileNameimg"] = null;

   this.LinkBtnDeleteImg.Visible = false;

   }

   catch(Exception ex)

   {

   //错误处理：

   Response.Write(ex.Message.ToString());

   }

  }

  }

 }





新建单图文预览代码如下：







 /// <summary>

 /// 预览图文消息

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 protected void LinkBtnSendPreview_Click(object sender, EventArgs e)

 {

  Session["media_id"] = null;



  //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);

  this.txttuwen_title.Focus();

  return;

  }

  if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))

  {

  ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);

  this.ImgTuWen2.Focus();

  return;

  }

  if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))

  {

  ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);

  this.tbContent.Focus();

  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);







  //POST数据例子： POST数据例子：

  //{

  // "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

  // },

  // //若新增的是多图文素材，则此处应还有几段articles结构

  // ]

  //}



  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 = "{\"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() +

   "\"}]}";



  string posturl = string.Format("http://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);



  string jsonres = PostUrl(posturl, postData);





  if (jsonres.Contains("media_id"))

  {

  //使用前需要引用Newtonsoft.json.dll文件

  JObject jsonObj = JObject.Parse(jsonres);



  if (this.txttoUserName.Value.ToString().Trim().Equals("请输入用户微信号"))

  {

   ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入接收消息的用户微信号！');", true);

   return;

  }







  string posturls = "http://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=" + Access_tokento;



  //预览图文消息的json数据{

  // "touser":"OPENID", 可改为对微信号预览，例如towxname：zhangsan

  // "mpnews":{  

  //  "media_id":"123dsdajkasd231jhksad"  

  //  },

  // "msgtype":"mpnews" 

  //}

  string postDatas = "{\"towxname\":\"" + this.txttoUserName.Value.ToString() +

     "\",\"mpnews\":{\"media_id\":\"" + jsonObj["media_id"].ToString() +

     "\"},\"msgtype\":\"mpnews\"}";



  string tuwenres = wxs.GetPage(posturls, postDatas);



  //使用前需药引用Newtonsoft.json.dll文件

  JObject jsonObjss = JObject.Parse(tuwenres);



  if (jsonObjss["errcode"].ToString().Equals("0"))

  {

   ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览成功！！');", true);

   return;

  }

  else

  {

   ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览失败！！');", true);

   return;

  }

  }

 }

 public static string NoHTML(string Htmlstring)

 {



  //删除脚本 

  Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);



  //替换标签

  Htmlstring = Htmlstring.Replace("\r\n", " ");

  Htmlstring = Htmlstring.Replace("\"", "'");

  Htmlstring = Htmlstring.Replace(" ", " ");

  return Htmlstring;



 }





单击确定按钮代码如下：







 /// <summary>

 /// 确认选择

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 protected void LinkBtnSubSave_Click(object sender, EventArgs e)

 {

  Session["media_id"] = null;

  //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);







  //POST数据例子： POST数据例子：

  //{

  // "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

  // },

  // //若新增的是多图文素材，则此处应还有几段articles结构

  // ]

  //}



  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 = "{\"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() +

   "\"}]}";



  string posturl = string.Format("http://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);



  string jsonres = PostUrl(posturl, postData);





  if (jsonres.Contains("media_id"))

  {

  //使用前需要引用Newtonsoft.json.dll文件

  JObject jsonObj = JObject.Parse(jsonres);



  WxMpNewsInfo wmninfo = new WxMpNewsInfo();

  wmninfo.title = this.txttuwen_title.Value.ToString();

  wmninfo.contents = description.ToString();

  wmninfo.ImageUrl = this.ImgTuWen.ImageUrl.ToString();

  Session["wmninfo"] = wmninfo;

  Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());

  }

 }

 /// <summary> 

 /// 请求Url，发送数据 

 /// </summary> 

 public static string PostUrl(string url, string postData)

 {

  byte[] data = Encoding.UTF8.GetBytes(postData);



  // 设置参数 

  HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

  CookieContainer cookieContainer = new CookieContainer();

  request.CookieContainer = cookieContainer;

  request.AllowAutoRedirect = true;

  request.Method = "POST";

  request.ContentType = "application/x-www-form-urlencoded";

  request.ContentLength = data.Length;

  Stream outstream = request.GetRequestStream();

  outstream.Write(data, 0, data.Length);

  outstream.Close();



  //发送请求并获取相应回应数据 

  HttpWebResponse response = request.GetResponse() as HttpWebResponse;

  //直到request.GetResponse()程序才开始向目标网页发送Post请求 

  Stream instream = response.GetResponseStream();

  StreamReader sr = new StreamReader(instream, Encoding.UTF8);

  //返回结果网页（html）代码 

  string content = sr.ReadToEnd();

  return content;

 }





Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());

这句代码就是将上传图文后得到的media_Id参数传送到群发界面，群发界面接收代码如下：







 protected void Page_Load(object sender, EventArgs e)

 {

  if(!Page.IsPostBack)

  {

  BindNewsSucaiList();//绑定素材列表

  BindGroupList();//绑定分组列表

  BindMassCount();//绑定本月已群发条数

  this.DataBind();

  if (Request.QueryString["media_id"] != null)

  {

   this.RadioBtnList.SelectedValue = "1";

   this.showExpress.Visible = false;

   this.txtwenben.Visible = false;

   this.tuwen.Visible = true;

   this.tuwenxuan.Visible = false;

   this.tuwenjian.Visible = false;

   this.lbtuwenmedai_id.Visible = true;

   this.lbtuwenmedai_id.Text = Request.QueryString["media_id"].ToString();

   this.LinkBtndeletetuwen.Visible = true;

   this.Imageyixuan.Visible = true;

  }

  }

 }



最终界面如下：



我这里只接收了一个media_id值，相对于做的简单，直接将值赋值给了一个label用于显示，也可以做成像官网那样，确定选择后，按照图文样式显示.



最后一步：群发按钮代码：其实上一章已经将代码贴出去了，这一章，我就单独贴一遍吧。

 





 /// <summary>

  /// 群发

  /// </summary>

  /// <param name="sender"></param>

  /// <param name="e"></param>

  protected void LinkBtnSubSend_Click(object sender, EventArgs e)

  {

   //根据单选按钮判断类型，//如果选择的是图文消息

   if (this.RadioBtnList.SelectedValue.ToString().Equals("1"))

   {

    if (String.IsNullOrWhiteSpace(this.lbtuwenmedai_id.Text.ToString().Trim()))

    {

     ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请选择或新建图文素材再进行群发！');", true);

     return;

    }



    WxMassService wms = new WxMassService();



    List<WxMassInfo> wxmaslist = wms.GetMonthMassCount();



    if (wxmaslist.Count >= 4)

    {

     ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('本月可群发消息数量已达上限！');", true);

     return;

    }

    else

    {

     

     //如何群发类型为全部用户，根据openID列表群发给全部用户，订阅号不可用，服务号认证后可用

     if (this.DDLMassType.SelectedValue.ToString().Equals("0"))

     {

      StringBuilder sbs = new StringBuilder();

      sbs.Append(GetAllUserOpenIDList());



      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 posturl = "http://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;



      ///群发POST数据示例如下： 

      // {

      // "touser":[

      // "OPENID1",

      // "OPENID2"

      // ],

      // "mpnews":{

      //  "media_id":"123dsdajkasd231jhksad"

      // },

      // "msgtype":"mpnews"

      //}



      string postData = "{\"touser\":[" + sbs.ToString() +

       "],\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +

       "\"},\"msgtype\":\"mpnews\"}";





      string tuwenres = wxs.GetPage(posturl, postData);



      //使用前需药引用Newtonsoft.json.dll文件

      JObject jsonObj = JObject.Parse(tuwenres);



      if (jsonObj["errcode"].ToString().Equals("0"))

      {

       Session["media_id"] = null;

       WxMassInfo wmi = new WxMassInfo();

       if (Session["wmninfo"] != null)

       {

        WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;



        wmi.title = wmninfo.title.ToString();

        wmi.contents = wmninfo.contents.ToString();

        wmi.ImageUrl = wmninfo.ImageUrl.ToString();





        wmi.type = "图文";



        if (this.DDLMassType.SelectedValue.ToString().Equals("0"))

        {

         wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();

        }

        else

        {

         wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();

        }



        wmi.massStatus = "成功";//群发成功之后返回的状态码

        wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID



        wmi.massDate = System.DateTime.Now.ToString();



        int num = wms.AddWxMassInfo(wmi);



        if (num > 0)

        {

         Session["wmninfo"] = null;

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);

         return;

        }

        else

        {

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);

         return;

        }

       }

       else

       {

        wmi.title = "";

        wmi.contents = "";

        wmi.ImageUrl = "";

        wmi.type = "图文";



        if (this.DDLMassType.SelectedValue.ToString().Equals("0"))

        {

         wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();

        }

        else

        {

         wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();

        }



        wmi.massStatus = "成功";//群发成功之后返回的状态码

        wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID



        wmi.massDate = System.DateTime.Now.ToString();



        int num = wms.AddWxMassInfo(wmi);



        if (num > 0)

        {

         Session["wmninfo"] = null;

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);

         return;

        }

        else

        {

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);

         return;

        }

       }

      }

      else

      {

       ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);

       return;

      }





     }

     else

     {

      //根据分组进行群发，订阅号和服务号认证后均可用



      string group_id = this.DDLGroupList.SelectedValue.ToString();





      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 posturl = "http://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;



      ///群发POST数据示例如下： 

      // {

      // "filter":{

      //  "is_to_all":false

      //  "group_id":"2"

      // },

      // "mpnews":{

      //  "media_id":"123dsdajkasd231jhksad"

      // },

      // "msgtype":"mpnews"

      //}



      string postData = "{\"filter\":{\"is_to_all\":\"false\"\"group_id\":\""+group_id+

       "\"},\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +

       "\"},\"msgtype\":\"mpnews\"}";





      string tuwenres = wxs.GetPage(posturl, postData);



      //使用前需药引用Newtonsoft.json.dll文件

      JObject jsonObj = JObject.Parse(tuwenres);



      if (jsonObj["errcode"].ToString().Equals("0"))

      {

       Session["media_id"] = null;

       WxMassInfo wmi = new WxMassInfo();

       if (Session["wmninfo"] != null)

       {

        WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;



        wmi.title = wmninfo.title.ToString();

        wmi.contents = wmninfo.contents.ToString();

        wmi.ImageUrl = wmninfo.ImageUrl.ToString();





        wmi.type = "图文";



        if (this.DDLMassType.SelectedValue.ToString().Equals("0"))

        {

         wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();

        }

        else

        {

         wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();

        }



        wmi.massStatus = "成功";//群发成功之后返回的状态码

        wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID



        wmi.massDate = System.DateTime.Now.ToString();



        int num = wms.AddWxMassInfo(wmi);



        if (num > 0)

        {

         Session["wmninfo"] = null;

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);

         return;

        }

        else

        {

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);

         return;

        }

       }

       else

       {

        wmi.title = "";

        wmi.contents = "";

        wmi.ImageUrl = "";

        wmi.type = "图文";



        if (this.DDLMassType.SelectedValue.ToString().Equals("0"))

        {

         wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();

        }

        else

        {

         wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();

        }



        wmi.massStatus = "成功";//群发成功之后返回的状态码

        wmi.massMessageID = jsonObj["msg_id"].ToString();//群发成功之后返回的消息ID



        wmi.massDate = System.DateTime.Now.ToString();



        int num = wms.AddWxMassInfo(wmi);



        if (num > 0)

        {

         Session["wmninfo"] = null;

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);

         return;

        }

        else

        {

         ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);

         return;

        }

       }

      }

      else

      {

       ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);

       return;

      }

     }

    }

   }

  }







为什么叫群发任务提交成功或失败，因为将信息提交给微信服务器，微信服务器还需审核，审核过程中也有可能审核不通过，不给于群发，所以我起名叫这个，嘿嘿，随便你们怎么起。。。。。



至此群发图文信息功能，已完毕，最后是群发记录，还记得上一章提到的群发成功之后要在本地保存记录吗，保存记录的原因，用于计算当月已群发几条信息，另外还有一个功能就是，群发成功之后，会得到一个消息msgid,根据这个ID可以对已经发送成功的信息进行撤销（删除）操作，关于撤销操作：微信官方规定，对群发成功的图文和视频消息，半个小时之内可以进行删除操作，其他消息一经群发成功概不支持此操作。截图如下：



该类用于存储已群发记录的实体类







 /// <summary>

 /// 微信已群发消息实体类，用于记录已群发消息的条数，信息实体

 /// </summary>

 public class WxMassInfo

 {

  public int WxMassNo { get; set; }//群发消息编号，数据库自增列



  public string title { get; set; }//图文消息的标题，若消息是文本类型，此项不显示



  public string ImageUrl { get; set; }//图片地址，若消息是文本类型，此项不显示



  public string type { get; set; }//消息的类型，文本，图文，图片，语音，视频



  public string contents { get; set; }//文本消息的内容，图文消息的正文



  public string massObject { get; set; }//群发对象



  public string massStatus { get; set; }//群发状态



  public string massMessageID{ get; set; }//群发成功后返回的消息ID



  public string massDate { get; set; }//群发日期时间



 }





本文已被整理到了《ASP.NET微信开发教程汇总》，欢迎大家学习阅读。

以上就是本文的全部内容，希望对大家的学习有所帮助。