首先建立一个微信消息类。

 

class wxmessage

{

public string FromUserName { get; set; }

public string ToUserName { get; set; }

public string MsgType { get; set; }

public string EventName { get; set; }

public string Content { get; set; }

public string EventKey { get; set; }

}

 

后台代码如下：

 

protected void Page_Load(object sender, EventArgs e)

{

wxmessage wx = GetWxMessage();

string res = "";

if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "subscribe")

{//刚关注时的时间，用于欢迎词

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 (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!");

}

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;

}

return wx;

}

/// <summary>

/// 发送文字消息

/// </summary>

/// <param name="wx">获取的收发者信息

/// <param name="content">内容

/// <returns></returns>

private string sendTextMessage(wxmessage wx, string content)

{

string res = string.Format(@" ",

wx.FromUserName, wx.ToUserName, DateTime.Now, content);

return res;

}