Dart

Refresh eBay Application Access Token

See more eBay Examples

This example shows how to get a new eBay REST API access token when the original is close to expiration. Dart

import 'package:chilkat/chilkat.dart';

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

  // The previously fetched eBay access token looks like this:

  // {
  //   "access_token": "v^1.1#i^1# ... HwSAAA=",
  //   "expires_in": 7200,
  //   "refresh_token": "v^1.1#i^1# ... FXjEyODQ=",
  //   "refresh_token_expires_in": 47304000,
  //   "token_type": "User Access Token"
  // }

  final json = CkJsonObject();
  try {
    json.loadFile('qa_data/tokens/ebay-access-token.json');
  } on ChilkatException {
    print('Failed to load the existing ebay access token JSON.');
    return;
  }

  final oauth2 = CkOAuth2();

  oauth2.tokenEndpoint = 'https://api.sandbox.ebay.com/identity/v1/oauth2/token';

  // Replace these with actual values.
  oauth2.clientId = 'EBAY_CLIENT_ID';
  oauth2.clientSecret = 'EBAY_CLIENT_SECRET';

  // Get the "refresh_token"
  oauth2.refreshToken = json.stringOf('refresh_token');

  // Send the HTTP POST to refresh the access token..
  try {
    oauth2.refreshAccessToken();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Load the access token response into the JSON object 
  json.load(oauth2.accessTokenResponse);

  // Save the new JSON access token response to a file.
  // The access + refresh tokens contained in this JSON will be needed for the next refresh.
  json.emitCompact = false;
  json.writeFile('qa_data/tokens/ebay-access-token.json');

  print('OAuth2 authorization granted!');
  print('New Access Token = ${oauth2.accessToken}');
}