(Delphi ActiveX) UPS OAuth2 Client Credentials

See more UPS Examples

Get an OAuth2 access token for the UPS REST API using the client credentials flow (no interactivity with a web browser required).

For more information, see https://developer.ups.com/api/reference?loc=en_US#tag/OAuthClientCredentials_other

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
success: Integer;
req: TChilkatHttpRequest;
resp: IChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
token_type: WideString;
issued_at: WideString;
client_id: WideString;
access_token: WideString;
expires_in: WideString;
status: WideString;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -i -X POST \
//   -u 2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt:nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4 \
//   https://wwwcie.ups.com/security/v1/oauth/token \
//   -H 'Content-Type: application/x-www-form-urlencoded' \
//   -H 'x-merchant-id: 7B3027' \
//   -d grant_type=client_credentials

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

http.BasicAuth := 1;
http.Login := '2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt';
http.Password := 'nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4';

req := TChilkatHttpRequest.Create(Self);
req.AddParam('grant_type','client_credentials');

req.AddHeader('x-merchant-id','7B3027');

resp := http.PostUrlEncoded('https://wwwcie.ups.com/security/v1/oauth/token',req.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);

jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());

respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(resp.Header);
    Memo1.Lines.Add('Failed.');

    Exit;
  end;

// Save the OAuth2 access token for other examples to use.
jResp.WriteFile('qa_data/tokens/ups_oauth2_token.json');

// If successful, the OAuth2 access token JSON looks like this:

// {
//   "token_type": "Bearer",
//   "issued_at": "1686911985606",
//   "client_id": "2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt",
//   "access_token": "eyJraW......R2sbqrY",
//   "expires_in": "14399",
//   "status": "approved"
// }

token_type := jResp.StringOf('token_type');
issued_at := jResp.StringOf('issued_at');
client_id := jResp.StringOf('client_id');
access_token := jResp.StringOf('access_token');
expires_in := jResp.StringOf('expires_in');
status := jResp.StringOf('status');
end;