Delphi ActiveX

S3 Download Specific Version of File

See more Amazon S3 Examples

Demonstrates how to download a file from the Amazon S3 service using the versionId query parameter.

Note: This example requires Chilkat v9.5.0.89 or later. (A problem regarding AwsSubResources w/ downloads was fixed shortly after the v9.5.0.88 release.)

Delphi ActiveX

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
success: Integer;
http: TChilkatHttp;
bucketName: WideString;
objectName: WideString;
localFilePath: WideString;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

http.AwsAccessKey := 'AWS_ACCESS_KEY';
http.AwsSecretKey := 'AWS_SECRET_KEY';
http.AwsRegion := 'us-east-1';
http.AwsEndpoint := 's3.amazonaws.com';
http.AwsSubResources := 'versionId=x8UPzRsgskmbe55lEQvhLi25PQl2lcFH';

bucketName := 'chilkat100';
objectName := 'frenchUtf8.txt';
localFilePath := 'qa_output/frenchUtf8.txt';

success := http.S3_DownloadFile(bucketName,objectName,localFilePath);

if (success <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
  end
else
  begin
    Memo1.Lines.Add('File downloaded.');
  end;
end;