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Spring Web Application with Authorization Code Flow with PKCE

This is a simple Spring Boot web application with just a secured home page at the / location, built with Thymeleaf templates, for the purpose of demonstrating the OpenID Connect Authorization Code Flow with PKCE in a confidential client, using Auth0 as the identity provider.

Prerequisites

Installation

Clone the repository:

git clone https://github.com/indiepopart/spring-web-pkce.git

Register the Application as Regular Web App in Auth0

Sign up at Auth0 and install the Auth0 CLI. Then in the command line run:

auth0 login

The command output will display a device confirmation code and open a browser session to activate the device.

Using the Auth0 CLI, register the web application as an authentication client for Auht0:

auth0 apps create \
  --name "Spring MVC" \
  --description "Spring Boot Webapp" \
  --type regular \
  --callbacks http://localhost:8080/login/oauth2/code/okta \
  --logout-urls http://localhost:8080 \
  --reveal-secrets

Copy application.yml.example to application.yml and fill in the values with your Auth0 client settings.

okta:
  oauth2:
    issuer: https://<your-auth0-domain>/
    client-id: <client-id>
    client-secret: <client-secret>
    post-logout-redirect-uri: http://localhost:8080

Run the application

./gradlew bootRun

In your browser, open a private window and navigate to http://localhost:8080. You will be redirected to the Auth0 Universal Login page.