Soumettre un formulaire Web sur Service Now via .Net

Question

J'essaie de comprendre ce que je fais mal ici. Nous utilisons Service Now et j'essaie d'automatiser la soumission d'un des formulaires sur le site qui ne dispose pas d'une API que je puisse appeler. Le code source de forme ressemble:

<FORM action="sys_upload.do" method="post" enctype="multipart/form-data"> 
<input value="u_authoritative_source_list.do" type="hidden" name="sysparm_referring_url"></input> 
<input value="u_authoritative_source" type="hidden" name="sysparm_target"></input> 
<input id="attachFile" type="file" size="41" name="attachFile"></input> 
<DIV class="caption">(2) Upload the file</DIV> 
<input value="Upload" style="width: 85px;" type="submit" width="85"></input> 
</FORM> 

On dirait un assez simple forme, donc je construit le code suivant pour gérer:

public static void importXML(string fileName) 
    { 
     List<MimePart> mimeParts = new List<MimePart>(); 

     NameValueCollection form = new NameValueCollection(); 


     //build the form values 
     form["sysparm_referring_url"] = "u_authoritative_source_list.do"; 
     form["sysparm_target"] = "u_authoritative_source"; 
     form["submit"] = "Upload"; 
     form["Upload"] = ""; 

     foreach (string key in form.AllKeys) 
     { 
      StringMimePart part = new StringMimePart(); 

      part.Headers["Content-Disposition"] = "form-data; name=\"" + key + "\""; 
      part.StringData = form[key]; 

      mimeParts.Add(part); 
     } 


     //add the file 
     StreamMimePart part1 = new StreamMimePart(); 
     part1.Headers["Content-Disposition"] = "form-data; name=\"" + "attachFile" + "\"; filename=\"" + "attachFile" + "\""; 
     part1.Headers["Content-Type"] = "application/octet-stream"; 
     FileStream theFile = new FileStream(fileName, FileMode.Open); 
     part1.SetStream(theFile); 
     mimeParts.Add(part1); 

     //uild sending package 
     string boundary = "----------" + DateTime.Now.Ticks.ToString("x"); 
     System.Net.ICredentials cred = new System.Net.NetworkCredential(Properties.Settings.Default.UserName, Properties.Settings.Default.Password); 
     HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(urlStr); 
     webRequest.Method = "POST"; 
     long contentLength = 0; 
     webRequest.ContentType = "multipart/form-data; boundary=" + boundary; 
     byte[] _footer = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n"); 

     foreach (MimePart part in mimeParts) 
     { 
      contentLength += part.GenerateHeaderFooterData(boundary); 
     } 
     webRequest.ContentLength = contentLength + _footer.Length; 
     webRequest.AllowWriteStreamBuffering = true; 
     webRequest.Credentials = cred; 

     byte[] buffer = new byte[8192]; 
     byte[] afterFile = Encoding.UTF8.GetBytes("\r\n"); 
     int read; 

     using (Stream s = webRequest.GetRequestStream()) 
     { 
      foreach (MimePart part in mimeParts) 
      { 
       s.Write(part.Header, 0, part.Header.Length); 

       while ((read = part.Data.Read(buffer, 0, buffer.Length)) > 0) 
        s.Write(buffer, 0, read); 

       part.Data.Dispose(); 

       s.Write(afterFile, 0, afterFile.Length); 
      } 

      s.Write(_footer, 0, _footer.Length); 
     } 
     foreach (MimePart part in mimeParts) 
      if (part.Data != null) 
       part.Data.Dispose(); 
     WebResponse response = webRequest.GetResponse(); 
     string res = response.ToString(); 
    } 

Et j'utilise la classe aide de MimePart de http://aspnetupload.com qui est juste un simple assistant:

public abstract class MimePart 
    { 
     NameValueCollection _headers = new NameValueCollection(); 
     byte[] _header; 

     public NameValueCollection Headers 
     { 
      get { return _headers; } 
     } 

     public byte[] Header 
     { 
      get { return _header; } 
     } 

     public long GenerateHeaderFooterData(string boundary) 
     { 
      StringBuilder sb = new StringBuilder(); 

      sb.Append("--"); 
      sb.Append(boundary); 
      sb.AppendLine(); 
      foreach (string key in _headers.AllKeys) 
      { 
       sb.Append(key); 
       sb.Append(": "); 
       sb.AppendLine(_headers[key]); 
      } 
      sb.AppendLine(); 

      _header = Encoding.UTF8.GetBytes(sb.ToString()); 

      return _header.Length + Data.Length + 2; 
     } 

     public abstract Stream Data { get; } 
    } 

Je ne reçois aucun message d'erreur, je ne reçois rien du tout et rien ne se passe. Le WebResponse a une teneur longueur de -1, et en-têtes:

+  Headers {Pragma: no-store,no-cache 
Cache-Control: no-cache,no-store,must-revalidate,max-age=-1 
Content-Type: text/html; charset=UTF-8 
Date: Wed, 14 Sep 2011 12:49:26 GMT 
Expires: 0 
Set-Cookie: JSESSIONID=8C9E1391E8F71AE2AA18AD5BB065683A; Path=/,glide_user_route=glide.fd4bdfa50a0a3c69006e8f94f6467f1a; Expires=Mon, 02-Oct-2079 16:03:34 GMT; Path=/ 
Server: Apache-Coyote/1.1 
Transfer-Encoding: chunked 

} System.Net.WebHeaderCollection 

Je ne sais pas quel chemin à parcourir d'ici, des suggestions?

Answer 1

Avez-vous envisagé d'utiliser les services Web pour y parvenir?

http://wiki.service-now.com/index.php?title=Direct_Web_Services