我怎么能发布这样的东西？

Question

I have a problem with the API in a console. So I want to post and I always get 411 error or 403. This is my code:

            string IntId = "suli";
            var lekeres = WebRequest.Create("https://xxxx.e-kreta.hu/idp/api/v1/Token") as HttpWebRequest;
            lekeres.Method = "POST";
            string adatokkal = "institute_code=" + IntId + "&userName=" + azonosito + "&password=" + jelszo + "&grant_type=password&client_id=919e0c1c-76a2-4646-a2fb-7085bbbf3c56";
            lekeres.Headers.Add(HttpRequestHeader.Authorization,adatokkal);
            var response = lekeres.GetResponse() as HttpWebResponse;
            if (response.StatusCode == HttpStatusCode.OK)
            {
                Stream dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream);
                string responseFromServer = reader.ReadToEnd();
                Console.WriteLine(responseFromServer);
            }

The origin Curl command (It works):

curl --data "institute_code=xxxxxxxxx&userName=xxxxxxxxxxx&password=xxxxxxxxxxx&grant_type=password&client_id=919e0c1c-76a2-4646-a2fb-7085bbbf3c56" https://xxxxxxxxxxx.e-kreta.hu/idp/api/v1/Token

Thanks for your help!

Answer 1

You could always just use a Webclient:

                using (WebClient client = new WebClient())
                {
                    string adatokkal = "https://xxxx.e-kreta.hu/idp/api/v1/Token?institute_code=" + IntId + "&userName=" + azonosito + "&password=" + jelszo + "&grant_type=password&client_id=919e0c1c-76a2-4646-a2fb-7085bbbf3c56";
                    string Response = client.DownloadString(new Uri(AH_Data_Url));
                }

Or a HTTP client

 var client = new HttpClient { BaseAddress = new Uri("https://xxxx.e-kreta.hu") }; var request = new HttpRequestMessage(HttpMethod.Post, "/idp/api/v1/Token"); var formData = new List<KeyValuePair<string, string>> { new KeyValuePair<string, string>("institute_code", IntId ) new KeyValuePair<string, string>("userName", azonosito ) // Add the rest here }; request.Content = new FormUrlEncodedContent(formData); var response = client.SendAsync(request).Result; if (response.IsSuccessStatusCode == true) { var responseContent = response.Content; string responsestring = responseContent.ReadAsStringAsync().Result; } else { }

If you have to authorize your request you should add something like

        var byteArray = new UTF8Encoding().GetBytes("Client ID" + ":" + "Client Secret");
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));

Answer 2

Since your curl -d (just a simple POST) works, you need to write your data to the request body, not the Authorization header as you have it. I think this should do it:

string IntId = "suli";
var lekeres = WebRequest.Create("https://xxxx.e-kreta.hu/idp/api/v1/Token") as HttpWebRequest;
lekeres.Method = "POST";
string adatokkal = "institute_code=" + IntId + "&userName=" + azonosito + "&password=" + jelszo + "&grant_type=password&client_id=919e0c1c-76a2-4646-a2fb-7085bbbf3c56";
 byte[] byteArray = Encoding.UTF8.GetBytes(postData);

// Set the ContentType property of the WebRequest.  
lekeres.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.  
lekeres.ContentLength = byteArray.Length;

// Get the request stream.  
Stream dataStream = lekeres.GetRequestStream();
// Write the data to the request stream.  
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.  
dataStream.Close();
var response = lekeres.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.OK)
{
    Stream dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    string responseFromServer = reader.ReadToEnd();
    Console.WriteLine(responseFromServer);
}