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-->  <p id="shownewgroup">  <p 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>  </p>    <p style="height:455px; width:100%;">  <asp:UpdatePanel ID="UpdatePanel2" runat="server">   <ContentTemplate>    <p style="width:100%; height:35px; margin:10px;"><asp:LinkButton ID="LinkBtnSelect" runat="server" OnClick="LinkBtnSelect_Click" ><p 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</p></asp:LinkButton>    <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkbtnRefresh" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkbtnRefresh_Click"><p style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">刷新</p></asp:LinkButton></span>    <span style="float:left;margin-left:20px;"><asp:LinkButton ID="LinkBtnDelete" CssClass="LinkbtnRefresh" runat="server" OnClick="LinkBtnDelete_Click"><p 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</p></asp:LinkButton></span>    </p>  <p 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>   <p 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>   </p>  </p>   </ContentTemplate>  </asp:UpdatePanel>  </p> </p> <p id="shownewgroupzhezhaoceng"></p>

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 = "https://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("https://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 = "https://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("https://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 = "https://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 = "https://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 }

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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