UPS:通过网络爬行进行AWB跟踪

问题

在工作中，人们花了很多时间从不同的来源（UPS，FedEx，DHL，…）跟踪AWB（空运账单）。因此，我被要求改进流程以节省宝贵的时间，我想用Excel作为平台来实现这一点；C#，但我一直在尝试一些测试（爬行UPS），但没有成功。

测试

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("https://wwwapps.ups.com/WebTracking/track?HTMLVersion=5.0&loc=es_MX&Requester=UPSHome&WBPM_lid=homepage%2Fct1.html_pnl_trk&trackNums=5007052424&track.x=Rastrear");
request.Method = "GET";
request.UserAgent = "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.Headers.Add("Accept-Language: es-ES,es;q=0.8");
request.Headers.Add("Accept-Encoding: gzip,deflate,sdch");
request.KeepAlive = false;
request.Referer = @"http://www.ups.com/";
request.ContentType = "text/html; charset=utf-8";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader sr = new StreamReader(response.GetResponseStream());

或者

using (var client = new WebClient())
{
    var values = new NameValueCollection();
    values.Add("HTMLVersion", "5.0");
    values.Add("loc", "es_MX");
    values.Add("Requester", "UPSHome");
    values.Add("WBPM_lid", "homepage/ct1.html_pnl_trk");
    values.Add("trackNums", "5007052424");
    values.Add("track.x", "Rastrear");
    client.Headers[HttpRequestHeader.Accept] = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
    client.Headers[HttpRequestHeader.AcceptEncoding] = "gzip,deflate,sdch";
    client.Headers[HttpRequestHeader.AcceptLanguage] = "es-ES,es;q=0.8";
    client.Headers[HttpRequestHeader.Referer] = @"http://www.ups.com/";
    client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36";
    string url = @"https://wwwapps.ups.com/WebTracking/track?";
    byte[] result = client.UploadValues(url, values);
    System.IO.File.WriteAllText(@"C:'UPSText.txt", Encoding.UTF8.GetString(result));
}

但上述例子都没有如预期的那样奏效。

问题

是否可以通过网络抓取UPS来跟踪AWB？

备注

目前，我无法访问UPS API。