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Delphi ActiveX Web API Examples

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(Delphi ActiveX) Xero Get File Content (Files API)

Demonstrates how to download the content of a Xero file.

Note: This example requires Chilkat v9.5.0.64 or greater.

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_v9_5_0_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
rest: TChilkatRest;
success: Integer;
fileID: WideString;
sbPath: TChilkatStringBuilder;
numReplaced: Integer;
jpgData: TChilkatBinData;
sbErrorText: TChilkatStringBuilder;

begin
// Note: Requires Chilkat v9.5.0.64 or greater.

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

rest := TChilkatRest.Create(Self);

// Before sending REST API calls, the REST object needs to be
// initialized for OAuth1.
// See Xero 2-Legged OAuth1 Setup for sample code.

// Assuming the REST object's OAuth1 authenticator is setup, and the initial
// connection was made, we may now send REST HTTP requests..

// ------------------------------------------------------------------------------
fileID := 'f042e9a3-a31d-4595-b8b3-6030ea6084bb';

sbPath := TChilkatStringBuilder.Create(Self);
sbPath.Append('/files.xro/1.0/Files/{FileId}/Content');
numReplaced := sbPath.Replace('{FileId}',fileID);

jpgData := TChilkatBinData.Create(Self);
success := rest.FullRequestNoBodyBd('GET',sbPath.GetAsString(),jpgData.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// A 200 response is expected for actual success.
// If we don't get a 200 response, then the response body was not actually
// the file data, but it was text containing error information.
if (rest.ResponseStatusCode <> 200) then
  begin
    sbErrorText := TChilkatStringBuilder.Create(Self);
    sbErrorText.AppendBd(jpgData.ControlInterface,'utf-8',0,0);
    Memo1.Lines.Add(sbErrorText.GetAsString());
    Memo1.Lines.Add('-- Failed.');
    Exit;
  end;

// Save to a local file.
success := jpgData.WriteFile('qa_output/xero_penguins.jpg');
if (success <> 1) then
  begin
    Memo1.Lines.Add('Failed to save to local file.');
  end;

Memo1.Lines.Add('Xero Get File was Successful.');
end;

 

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