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，

   <!--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>

   /// <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());     }    }    }   }

   /// <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;     }

   /// <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.

   /// <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：

   /// <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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