.Net development WeChat public platform certification 'become a developer' example detailed explanation

This article mainly provides a detailed analysis of the "Become a Developer" .Net code for the certification of WeChat public platform development. Interested friends can refer to

.Net to realize the development of WeChat public service platform. Certification, certification to become a developer, the specific content is as follows

These codes will be used once when starting the certification, and will not be used in the future:

const string Token = "XXXXX";//你的token
protected void Page_Load(object sender, EventArgs e)
{
  string postStr = "";
  if (Request.HttpMethod.ToLower() == "post")
  {
    System.IO.Stream s = System.Web.HttpContext.Current.Request.InputStream;
    byte[] b = new byte[s.Length];
    s.Read(b, 0, (int)s.Length);
    postStr = System.Text.Encoding.UTF8.GetString(b);
    if (!string.IsNullOrEmpty(postStr))
    {
      //ResponseMsg(postStr);
      Response.Write(ResponseMsg(postStr));
      Response.End();
    }
   //WriteLog("postStr:" + postStr);
  }
  else
  {
    Valid();
  }
}

/// <summary>
/// 验证微信签名
/// </summary>
/// * 将token、timestamp、nonce三个参数进行字典序排序
/// * 将三个参数字符串拼接成一个字符串进行sha1加密
/// * 开发者获得加密后的字符串可与signature对比，标识该请求来源于微信。
/// <returns></returns>
private bool CheckSignature()
{
  string signature = Request.QueryString["signature"].ToString();
  string timestamp = Request.QueryString["timestamp"].ToString();
  string nonce = Request.QueryString["nonce"].ToString();
  string[] ArrTmp = { Token, timestamp, nonce };
  Array.Sort(ArrTmp);   //字典排序
  string tmpStr = string.Join("", ArrTmp);
  tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
  tmpStr = tmpStr.ToLower();
  if (tmpStr == signature)
  {
    return true;
  }
  else
  {
    return false;
  }
}
.private void Valid()
{
  string echoStr = Request.QueryString["echoStr"].ToString();
  if (CheckSignature())
  {
    if (!string.IsNullOrEmpty(echoStr))
    {
      Response.Write(echoStr);
      Response.End();
    }
  }
}

/// <summary>
/// 写日志(用于跟踪)
/// </summary>
private void WriteLog(string strMemo)
{
  string filename = Server.MapPath("/logs/log.txt");
  if (!Directory.Exists(Server.MapPath("//logs//")))
    Directory.CreateDirectory("//logs//");
  StreamWriter sr = null;
  try
  {
    if (!File.Exists(filename))
    {
      sr = File.CreateText(filename);
    }
    else
    {
      sr = File.AppendText(filename);
    }
    sr.WriteLine(strMemo);
  }
  catch
  {

  }
  finally
  {
    if (sr != null)
      sr.Close();
  }
}

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