Andrew Hughes
All Posts by Andrew Hughes
Get Started with Jetty, Java, and OAuth
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Jetty is a small, highly-scalable Java-based web server and servlet engine. It supports HTTP/2, WebSockets, and many other protocols. It powers websites and frameworks,...
Build a Simple CRUD App with Spring Boot and Vue.js
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. You will use Vue and Spring Boot to build a todo list web application. The application will include CRUD abilities, meaning that you can...
JHipster Microservices on AWS with Amazon Elastic Kubernetes Service
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’ll use JHipster to build a microservice stack and deploy it to Amazon Elastic Kubernetes Service (EKS). The microservices will use...
Kubernetes Microservices on Azure with Cosmos DB
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’ll learn how to deploy a JHipster-based reactive microservice to Azure Kubernetes Service (AKS). You’ll use Azure’s Cosmos DB as a...
Better Integration Testing With Spring Cloud Contract
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Spring Cloud Contract was created as a way to help test interconnected microservices. Generally speaking, there are two options when testing microservices: 1) you...
Learn How to Build a Single-Page App with Vue and Spring Boot
In this tutorial, you are going to create a single-page application (SPA) that uses a Spring Boot resource server and a Vue front-end client. You’ll see how to configure Spring Boot to use JSON Web Tokens (JWT) for authentication and authorization, with Okta as an OAuth 2.0 and OpenID Connect (OIDC) provider. You’ll also see how to bootstrap a Vue client app with the Vue CLI and how to secure it using the Okta Sign-In...
Easy Distributed Tracing with Spring Cloud Sleuth
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Spring Cloud Sleuth allows you to aggregate and track log entries as requests move through a distributed software system. In a monolithic system, it’s...
How to Use Client Credentials Flow with Spring Security
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. The client credentials grant is used when two servers need to communicate with each other outside the context of a user. This is a...
Build a Secure GraphQL API with MicroProfile
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. MicroProfile is an open-source community project with the goal to encourage the development of Java microservice solutions. It was created in 2016 in response...
Build a Secure Spring Data JPA Resource Server
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’re going to use Spring Boot and Spring Data to build a fully functioning web service with ridiculously little effort. You’re...
Build a CRUD App with Vue.js, Spring Boot, and Kotlin
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Much like React or Angular, Vue.js is a JavaScript view library. When coupled with a state management library like MobX, Vue.js becomes a full-featured...
Serverless Java with Amazon Web Services
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Serverless is the next iteration in cloud management. First, we let go of having physical hardware servers and moved all of our servers into...
A Quick Guide to Spring Cloud Stream
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’ll learn how to create a Spring Cloud Stream application that interacts with a messaging service, such as RabbitMQ or Apache...
Secure Kafka Streams with Quarkus and Java
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’re going to use Apache Kafka and Quarkus to create a secure, scalable web application. The application will use Kafka Streams...
Build a CRUD Application with Kotlin and React
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’re going to build a client and server application using React for the frontend and Kotlin with Spring Boot for the...
Build a CRUD API with Java and MongoDB
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. This tutorial leverages two technologies that are commonly used to build web services: MongoDB and Java (we’ll actually use Spring Boot). MongoDB is a...
A Quick Guide to Java on Netty
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Netty is a non-blocking input/output (NIO) framework that makes it relatively simple to develop low-level network servers and clients. Netty provides an incredible amount...
Get Started with Jetty, Java, and OAuth
How to Develop a Quarkus App with Java and OIDC Authentication
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Quarkus is a container-first Kubernetes Java framework designed to have a super-fast start-up time and low memory usage. The container-first strategy emphasizes packaging the...
Get Groovy with Gradle
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In the Java world, there are two main build systems: Gradle and Maven. A build system chiefly manages potentially complex webs of dependencies and...
Tutorial: How to Build a JavaFX Desktop App with OIDC Authentication
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. JavaFX, a library of user interaction controls, allows Java developers to build cross-platform desktop applications and internet application. It was intended as a replacement...
Get Jibby With Java, Docker, and Spring Boot
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Docker is a very popular system for containerizing applications. Containerization packages the executable code along with the runtime environment in deployable virtual images using...
Build a REST API Using Java, MicroProfile, and JWT Authentication
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this post, you will learn how to build a simple REST API using Eclipse MicroProfile and secure it using JSON Web Token (JWT)...
Spring Method Security with PreAuthorize
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. This tutorial will explore two ways to configure authentication and authorization in Spring Boot using Spring Security. One method is to create a WebSecurityConfigurerAdapter...
Simple Authentication with Spring Security
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Authentication is vital to all but the most basic web applications. Who is making the request, wanting data, or wanting to update or delete...
A Quick Guide to Spring Boot Login Options
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this post, you’re going to work through various options for implementing a login feature using Spring Boot 2.1. You’ll start with the most...
Build a Microservice Architecture with Spring Boot and Kubernetes
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’re going to use Kubernetes to deploy a Spring Boot microservice architecture to Google Cloud, specifically the Google Kubernetes Engine (GKE)....
A Quick Guide to OAuth 2.0 with Spring Security
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. When building a web application, authentication and authorization is a must. Doing it right, however, is not simple. Computer security is a true specialty....
Build a Reactive App with Spring Boot and MongoDB
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Reactive apps allow you to scale better if you’re dealing with lots of streaming data. They’re non-blocking and tend to be more efficient because...
Add Social Login to Your JHipster App
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Social login is a great way to offer your customers a simple and secure authentication method. Why force them to create and forget yet...
Build a Basic App with Spring Boot and JPA using PostgreSQL
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Every non-trivial application needs a way to save and update data: a resource server that is accessible via HTTP. Generally, this data must be...
Build a Simple CRUD App with Spring Boot and Vue.js
Tutorial: Create and Verify JWTs in Java
Java support for JWT (JSON Web Tokens) used to require a lot of work: extensive customization, hours lost resolving dependencies, and pages of code just to assemble a simple JWT. Not anymore! This tutorial will show you how to use an existing JWT library to do two things: Generate a JWT Decode and verify a JWT You’ll notice the tutorial is pretty short. That’s because it’s that easy. If you’d like to dig deeper, take...
Simple Token Authentication for Java Apps
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. JSON Web Tokens have quickly become the standard for securing web applications, superseding older technologies like cookies and sessions. Used properly, they address a...
Add User Authentication to Your Spring Boot App in 15 Minutes
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. When’s the last time you had fun building a web application? We love Spring Boot because it makes it super easy to build a...
Build a Web App with Spring Boot and Spring Security in 15 Minutes
Developers know that securing web apps can be a pain. Doing it right is tough. The worst part is that “right” is a moving target. Security protocols change. Vulnerabilities are found in dependencies and patches are released. Tons of often complex boilerplate code has to be generated. The software-as-service paradigm has proliferated over the last decade, and while I love reinventing the wheel as much as the next developer (because, clearly, I’m gonna write it...
Build a Secure API with Spring Boot and GraphQL
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. GraphQL is a data query language developed by Facebook in 2012 to solve a shortcoming of REST APIs and traditional database models. All too...
Add Social Login to Your Spring Boot 2.0 App
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. We’ve all seen social login. It’s the “Log in with Facebook” or “Log in with Twitter” buttons we see below every username and password...
Secure Your Spring Boot Application with Multi-Factor Authentication
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. OAuth 2.0 has quickly become an industry standard for third party authentication for web applications. It’s a super secure strategy, when implemented properly, but...
Build a Basic CRUD Application with Grails and Okta
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Grails and Groovy can be a great alternative to Spring Boot, in some specific use cases. In this post, we’ll start with that basic...
Build Server Side Authentication in Grails with OAuth 2.0 and Okta
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. What is Grails, what is Groovy, and why would we choose them over Spring Boot? In this post I’ll walk you through implementing server-side...