微信公眾平台開發之發送文本消息.Net代碼解析

.Net實現微信公共服務平台開發中的發送文本消息功能，具體內容如下

首先建立一個微信消息類。 

 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; } 
 } 

 後台代碼如下： 

protected void Page_Load(object sender, EventArgs e)
  {
   wxmessage wx = GetWxMessage();
   string res = "";

   if (!string.IsNullOrEmpty(wx.EventName) && wx.EventName.Trim() == "subscribe")
   {//剛關注時的時間，用於歡迎詞
    string content = "";
    content = "/:rose歡迎北京永傑友信科技有限公司/:rose\n直接回復“你好”";
    res = sendTextMessage(wx, content);
   }
   else
   {
    if (wx.MsgType == "text" && wx.Content == "你好")
    {
     res = sendTextMessage(wx, "你好,歡迎使用北京永傑友信科技有限公司公共微信平台!");
    }
    else
    {
     res = sendTextMessage(wx, "你好,未能識別消息!");
    }
   }

   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;
  }

/// 
  /// 發送文字消息 
  /// 
  /// 獲取的收發者信息 
  /// 內容 
  /// 
  private string sendTextMessage(wxmessage wx, string content)
  {
   string res = string.Format(@" ",
    wx.FromUserName, wx.ToUserName, DateTime.Now, content);
   return res;
  }

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