Delphi DLL

OSS Download File (Alibaba Cloud)

See more Alibaba Cloud OSS Examples

Demonstrates how to download a file from an AliCloud OSS bucket.

The Chilkat S3 functions in the HTTP class are compatible with Alibaba Cloud's OSS service.

Delphi DLL

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
bucketName: PWideChar;
objectName: PWideChar;
localFilePath: PWideChar;

begin
success := False;

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

http := CkHttp_Create();

// Insert your AccessKey ID here:
CkHttp_putAwsAccessKey(http,'access-key');

// Insert your AccessKey Secret here:
CkHttp_putAwsSecretKey(http,'secret-key');

// To download from a bucket located in a different region, use the endpoint for that region, such as "oss-cn-hangzhou.aliyuncs.com 	"
// See Alibaba Object Storage Service Regions and Endpoints
CkHttp_putAwsEndpoint(http,'oss-us-east-1.aliyuncs.com');

bucketName := 'chilkat';
objectName := 'seahorse.jpg';
localFilePath := 'qa_output/seahorse.jpg';

success := CkHttp_S3_DownloadFile(http,bucketName,objectName,localFilePath);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
  end
else
  begin
    Memo1.Lines.Add('File downloaded.');
  end;

CkHttp_Dispose(http);

end;