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Editor to share with you how to use .net to achieve Wechat public service platform development authentication, I believe that most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's go to know it!

This code will be used once for authentication, and will not be used later:

Const string Token = "XXXXX"; / / your 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 () }} / verify Wechat signature / * sort the three parameters token, timestamp and nonce in lexicographic order / * concatenate the three parameter strings into a string for sha1 encryption / * the encrypted string obtained by the developer can be compared with signature to indicate that the request originated from Wechat. / / 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); / / in dictionary order 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"] .private void Valid (); if (CheckSignature ()) {if (! string.IsNullOrEmpty (echoStr)) {Response.Write (echoStr); Response.End () }} / write log (for tracking) / 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 () }} the above is all the contents of the article "how to use .net to achieve the certification of Wechat public service platform development". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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