微信公共服务平台开发（.Net 的实现）7-------发送图文消息

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 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;
}