Okta Helidon Sample

This example shows how to return the user's information from an API using an OAuth 2.0 access token.

Prerequisites

Before running this sample, you will need the following:

• Java 17+
• The Okta CLI Tool
• An Okta Developer Account, create one using okta register, or configure an existing one with okta login

Get the Code

Grab and configure this project using okta start helidon.

You can also clone this repo and run okta start in it.

git clone https://github.com/okta-samples/okta-helidon-sample.git
cd okta-helidon-sample
okta start

Enable Refresh Token

Sign into your Okta Developer Edition account to add a required setting to your Helidon Okta app to avoid third-party cookies. Navigate to Applications > Applications and select "okta-helidon-sample" application to edit. Find the General Settings and press Edit. Enable Refresh Token in the Grant type section. Save your changes.

Run the Example

./mvnw package
java -jar target/helidon.jar

API Access with OAuth 2.0

You can also retrieve user information from the /hello endpoint with an OAuth 2.0 access token.

First, you'll need to generate an access token.

1. Run okta apps create spa. Set oidcdebugger as an app name and press Enter.

2. Use https://oidcdebugger.com/debug for the Redirect URI and set the Logout Redirect URI to https://oidcdebugger.com.

3. Navigate to the OpenID Connect Debugger website.

   1. Fill in your client ID
   2. Use https://{yourOktaDomain}/oauth2/default/v1/authorize for the Authorize URI
   3. Use openid offline_access for the Scope
   4. Select code for the response type and Use PKCE
   5. Click Send Request to continue

4. Set the access token as a TOKEN environment variable in a terminal window.

   TOKEN=eyJraWQiOiJYa2pXdjMzTDRBYU1ZSzNGM...
   

5. Test the API with HTTPie and an access token.

   http :8080/hello Authorization:"Bearer $TOKEN"
   

Learn More

For more details on how to build an application with Okta and Helidon you can read Build REST APIs and Native Java Apps with Helidon.