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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="/UploadFiles/2021-04-02/close1.png">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_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_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_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_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[^>]*", "", 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_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" + 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" + 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_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_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。
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