asp.net微信开发（高级群发图文）

这篇文章主要介绍了asp.net微信开发中有关高级群发图文的相关内容，需要的朋友可以参考下

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>

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accesstokenstring 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 SettingsAdministratorMy DocumentsMy Pictures20022775_m.jpg//string filepath = FileUpload1.FileName;//得到上传的文件名20022775_m.jpgstring filename = filepath.Substring(filepath.LastIndexOf("\") + 1);//20022775_m.jpgstring serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:InetpubwwwrootWebSite1images20022775_m.jpgthis.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accesstokenstring 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("rn--" + boundary + "rn");byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("rn--" + boundary + "--rn");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}"rnContent-Type:application/octet-streamrnrn", 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:InetpubwwwrootWebSite1images20022775_m.jpgif (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accesstokenstring 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("rn", " ");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accesstokenstring 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accesstokenstring 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IDwmi.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IDwmi.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accesstokenstring 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IDwmi.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IDwmi.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IDpublic 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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