Dart Requires Chilkat v11.0.0+

Upload a Blob using a Container’s Shared Access Signature

See more Azure Cloud Storage Examples

Shows how to upload an Azure blob using a URL with a shared access signature. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // To upload a file we're simply sending a PUT with the content of the data.  For example:

  // PUT https://myaccount.blob.core.windows.net/pictures/photo.jpg?sv=2015-02-21&st=2015-07-01T08%3a49Z&se=2015-07-02T08%3a49Z&  sr=c&sp=w&si=YWJjZGVmZw%3d%3d&sig=Rcp6gQRfV7WDlURdVTqCa%2bqEArnfJxDgE%2bKH3TCChIs%3d HTTP/1.1  
  // Host: myaccount.blob.core.windows.net  
  //   
  // Content-Length: 12  
  //   
  // Hello World.  

  // Upload a string to a helloWorld.txt file in the "mycontainer" container, in the "chilkat" account.
  final url = 'https://chilkat.blob.core.windows.net/mycontainer/helloWorld.txt?sv=2021-06-08&ss=bfqt&srt=sco&sp=rwdlacupiyx&se=2023-02-12T21:30:53Z&st=2023-02-12T13:30:53Z&spr=https&sig=HB8CoZiD7EJD1rQNIVnLl%2Bq7kyLcOCnSXR14TadBv6s%3D';

  final http = CkHttp();

  http.setRequestHeader('x-ms-blob-type', 'BlockBlob');

  final resp = CkHttpResponse();
  try {
    http.httpStr('PUT', url, 'Hello World.', 'utf-8', 'text/plain', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  var statusCode = resp.statusCode;
  print('response status code: $statusCode');
  print('response status text: ${resp.statusText}');

  if (statusCode == 201) {
    print('Success.');
  } else {
    print('Failed.');
  }

  // -------------------------------------------------------------------------------------------------
  // Upload from a file...

  // Upload a binar file to a penguins.jpg file in the "mycontainer" container, in the "chilkat" account.
  final url2 = 'https://chilkat.blob.core.windows.net/mycontainer/penguins.jpg?sv=2021-06-08&ss=bfqt&srt=sco&sp=rwdlacupiyx&se=2023-02-12T21:30:53Z&st=2023-02-12T13:30:53Z&spr=https&sig=HB8CoZiD7EJD1rQNIVnLl%2Bq7kyLcOCnSXR14TadBv6s%3D';

  http.clearHeaders();
  http.setRequestHeader('x-ms-blob-type', 'BlockBlob');

  // Upload a JPG file
  try {
    http.httpFile('PUT', url2, 'c:/qa_data/jpg/penguins.jpg', 'image/jpeg', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  statusCode = resp.statusCode;
  print('response status code: $statusCode');
  print('response status text: ${resp.statusText}');

  if (statusCode == 201) {
    print('Success.');
  } else {
    print('Failed.');
  }
}