This example shows you how to use the Okta Spring Boot Starter to login a user. The login is achieved through the Authorization Code Flow where the user is redirected to the Okta-Hosted login page. After the user authenticates, they are redirected back to the application and a local cookie session is created.

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

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

Grab and configure this project using okta start spring-boot.

NOTE: If you'd like to use WebFlux instead of Spring MVC, use okta start spring-boot --branch webflux.

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

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

./mvnw spring-boot:run

Log in at http://localhost:8080.

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. Select code for the response type and Use PKCE
   4. 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"
   

For more details on how to build an application with Okta and Spring Boot / Spring Security you can read A Quick Guide to Spring Boot Login Options.