微信公众平台开发之发送图文消息.Net代码解析

微信(小程序)  /  管理员 发布于 3年前   120

之前我们讲过让微信发送给我们普通的文本信息,下面我们来看看如何发送图文信息,需要注意的是这里说的是,让微信发给我们,而不是我们拍个图片发给微信处理,我们上传图片在以后的章节介绍.下面是发送图文消息的函数,涉及title(标题),description(摘要),picurl(图片),链接(url)几个关键的参数: 

protected string sendPicTextMessage(Msg _mode,string title,string description,string picurl,string url)  {        string res = string.Format(@"<xml>    <ToUserName><![CDATA[{0}]]></ToUserName>    <FromUserName><![CDATA[{1}]]></FromUserName>    <CreateTime>{2}</CreateTime>    <MsgType><![CDATA[news]]></MsgType>    <ArticleCount>1</ArticleCount>    <Articles>     <item>     <Title><![CDATA[{3}]]></Title>      <Description><![CDATA[{4}]]></Description>     <PicUrl><![CDATA[{5}]]></PicUrl>     <Url><![CDATA[{6}]]></Url>     </item>     </Articles>     </xml> ",      _mode.FromUserName, _mode.ToUserName, DateTime.Now,title, description, picurl, url);    return res;   }

直接在调用函数即可: 

protected void Page_Load(object sender, EventArgs e)   {         MyMenu();     wxmessage wx = GetWxMessage();     string res = "";     if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "subscribe")     {       string content = "";       content = "/:rose欢迎北京永杰友信科技有限公司/:rose\n直接回复“你好”";       res = sendTextMessage(wx, content);     }     else if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "CLICK")     {       if(wx.EventKey=="Hello")         res = sendTextMessage(wx, "你好,欢迎使用北京永杰友信科技有限公司公共微信平台!");       if(wx.EventKey=="P1")         res = sendTextMessage(wx, "你好,点击了产品1");       if(wx.EventKey=="P2")         res = sendTextMessage(wx, "你好,点击了产品2");     }     else     {       if (wx.MsgType == "text" && wx.Content == "你好")       {         res = sendTextMessage(wx, "你好,欢迎使用北京永杰友信科技有限公司公共微信平台!");       }       if (wx.MsgType == "text" && wx.Content == "图文")       {         res = sendPicTextMessage(wx,"这里是一个标题","这里是摘要","http://mp.weixin.qq.com/wiki/skins/common/images/weixin_wiki_logo.png","http://www.4ugood.net");       }       else if (wx.MsgType == "voice")       {         res = sendTextMessage(wx, wx.Recognition);       }       else       {         res = sendTextMessage(wx, "你好,未能识别消息!");       }     }     Response.Write(res);   }   private wxmessage GetWxMessage()   {     wxmessage wx = new wxmessage();     StreamReader str = new StreamReader(Request.InputStream, System.Text.Encoding.UTF8);     XmlDocument xml = new XmlDocument();     xml.Load(str);     wx.ToUserName = xml.SelectSingleNode("xml").SelectSingleNode("ToUserName").InnerText;     wx.FromUserName = xml.SelectSingleNode("xml").SelectSingleNode("FromUserName").InnerText;     wx.MsgType = xml.SelectSingleNode("xml").SelectSingleNode("MsgType").InnerText;     if (wx.MsgType.Trim() == "text")     {       wx.Content = xml.SelectSingleNode("xml").SelectSingleNode("Content").InnerText;     }     if (wx.MsgType.Trim() == "event")     {       wx.EventName = xml.SelectSingleNode("xml").SelectSingleNode("Event").InnerText;       wx.EventKey = xml.SelectSingleNode("xml").SelectSingleNode("EventKey").InnerText;     }     if (wx.MsgType.Trim() == "voice")     {       wx.Recognition = xml.SelectSingleNode("xml").SelectSingleNode("Recognition").InnerText;     }          return wx;   }

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