Sagepay Reporting API錯誤無法驗證<signature>的值

Question

我對.Net非常陌生，並且需要一些幫助，以免因此而煩惱。我正在嘗試使用sagepay管理員和報告API創建與sagepay集成的後臺系統。我在網上找到了一個示例代碼，它非常有幫助，但是當我嘗試打電話給API時，出現了上述錯誤。這裏是一個示例代碼，下面是該調用。我想知道是否有人能告訴我我要去哪裏？

 private string BuildCommandString(string command, string vendor, string user, string xmldata, string password = null, string signature = null) 
    { 
     return string.Format("<command>{0}</command><vendor>{1}</vendor><user>{2}</user>{3}{4}{5}", 
      command, 
      Vendor, 
      User, 
      xmldata ?? string.Empty, 
      (string.IsNullOrEmpty(password) == false ? "<password>" + password + "</password>" : string.Empty), 
      (string.IsNullOrEmpty(signature) == false ? "<signature>" + signature + "</signature>" : string.Empty)); 
    } 

    /// <summary> 
    /// Perform the main call for the API and collect the response 
    /// </summary> 
    /// <param name="command">api command name</param> 
    /// <param name="xmldata">optional extra data for api</param> 
    /// <returns>new SagePayResponse or null if communication error</returns> 
    protected SagePayResponse ProcessAPI(string command, string xmldata) 
    { 
     // get the requiest 
     HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(Url); 
     httpRequest.Method = "POST"; 

     // build data 
     string data = BuildCommandString(command, Vendor, User, xmldata, Password); 
     // apply signature 
     MD5 md5 = new MD5CryptoServiceProvider(); 
     byte[] hash = md5.ComputeHash(Encoding.UTF8.GetBytes(data)); 
     string sig = BitConverter.ToString(hash).Replace("-", string.Empty); 

     // rebuild with signature 
     data = "XML=<vspaccess>" + BuildCommandString(command, Vendor, User, xmldata, null, sig) + "</vspaccess>"; 

     // get the data 
     byte[] bytes = Encoding.UTF8.GetBytes(data); 
     httpRequest.ContentType = "application/x-www-form-urlencoded"; 
     httpRequest.ContentLength = data.Length; 

     // get the request stream 
     Stream requestStream = httpRequest.GetRequestStream(); 
     requestStream.Write(bytes, 0, bytes.Length); 
     requestStream.Close(); 

     // call the sagepay url and get response 
     SagePayResponse sagePayResponse = null; 
     HttpWebResponse response = (HttpWebResponse)httpRequest.GetResponse(); 
     try 
     { 
      if (response.StatusCode == HttpStatusCode.OK) 
      { 
       Stream responseStream = response.GetResponseStream(); 
       //string contentType = response.ContentType; 
       StreamReader reader = new StreamReader(responseStream, Encoding.UTF8); 
       try 
       { 
        //Console.WriteLine("response ok"); 
        sagePayResponse = new SagePayResponse(reader.ReadToEnd()); 
       } 
       finally 
       { 
        reader.Close(); 
       } 
      } 
     } 
     finally 
     { 
      response.Close(); 
     } 

     return sagePayResponse; 
    } 

Answer 1

@ Mandar Jogalekar我希望這有助於

protected class SagePayResponse 
    { 
     /// <summary> 
     /// Raw xml response object 
     /// </summary> 
     private XmlDocument m_responseXml; 

     /// <summary> 
     /// Create a new response object from the xml string 
     /// </summary> 
     /// <param name="responseXml"></param> 
     public SagePayResponse(string responseXml) 
     { 
      // create our xml doc 
      m_responseXml = new XmlDocument(); 
      m_responseXml.LoadXml(responseXml); 

      // find an error node 
      XmlNode node = m_responseXml.SelectSingleNode("//vspaccess/errorcode"); 
      int errorCode = 0; 
      if (node != null && int.TryParse(node.InnerText, out errorCode) == true && errorCode != 0) 
      { 
       // there was an error and we have a non-zero error code 
       ErrorCode = errorCode; 
      } 
      // pick out any error description 
      node = m_responseXml.SelectSingleNode("//vspaccess/error"); 
      if (node != null && node.InnerText.Length != 0) 
      { 
       ErrorText = node.InnerText; 
      } 
      // pick out the timestamp 
      node = m_responseXml.SelectSingleNode("//vspaccess/timestamp"); 
      if (node != null && node.InnerText.Length != 0) 
      { 
       DateTime dt; 
       if (DateTime.TryParseExact(node.InnerText, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.None, out dt) == true) 
       { 
        Timestamp = DateTime.SpecifyKind(dt, DateTimeKind.Utc).ToLocalTime(); 
       } 
      } 
     }