Small bug in error-handling-spring-boot-starter for Spring Boot 4. Bugfix 5.0.1 released: github.com/wimdeblauwe/...

20% Black Friday discount on my books: * Taming Thymleaf: leanpub.com/taming-thyme... * Modern frontends with htmx: leanpub.com/modern-front... Learn about about easy and nice HTML frontends with Spring Boot!

Friends of htmx and Spring Boot, version 5.0.0 of htmx-spring-boot has been released. It is the version you need for Spring Boot 4. See github.com/wimdeblauwe/... for release notes.

ttcli 1.10.0 now supports generating Spring Boot 4 projects with Thymeleaf or JTE as your templating engine of choice. The generated project is automatically configured with the correct versions of libraries to quickly start your next server-side rendering project. See github.com/wimdeblauwe/...

vite-spring-boot 2.0.0-rc.1 has been released for Spring Boot 4 github.com/wimdeblauwe/...

Upgraded 2 of my open source libraries for Spring Boot 4.0.0-RC1: * error-handling-spring-boot-starter: github.com/wimdeblauwe/... * htmx-spring-boot: github.com/wimdeblauwe/...

TIL: The demo of AI framework Embabel that Rod Johnson showed at #devoxx uses Thymeleaf and htmx 😎

I just released vite-plugin-spring-boot 1.0.0. It is identical to the 0.7.0, except for the Vite 7 support that has been added. See github.com/wimdeblauwe/... New projects generated using ttlci will pick it up automatically.

📝 Just published the final post in my Spring Boot series: "How I document production-ready Spring Boot applications" 🚀 Learn how to: * Keep docs in sync with code using AsciiDoc * Auto-generate REST API docs from tests * Create living architecture documentation www.wimdeblauwe.com/blog/2025/09...

tedpatrick.substack.com/p/html-is-un... "Having worked with countless JS and server frameworks for web development, I found this model to be the best I have ever experienced. Our team was able to deliver features productively, and our team velocity was about double what I expected."

📝 Just published: How I test production-ready Spring Boot applications - Use case tests with in-memory repositories (no mocking!) - Repository tests with Testcontainers - Controller tests - Integration tests - Architecture tests Read the full guide: www.wimdeblauwe.com/blog/2025/07...

Proficiat Belgian Cats! 🏀

🚀 New blog post: How I write production-ready Spring Boot applications After 25+ years of Java development, here's my approach to: - DDD-based package structure - Clean use case architecture - Why I avoid Hexagonal Architecture Full breakdown: www.wimdeblauwe.com/blog/2025/06...

Rather use JTE as template engine instead of Thymeleaf with Spring Boot? ttcli 1.9.0 can now generate such a project to get live reload out of the box. Just save and the browser reloads. See github.com/wimdeblauwe/...

Lot's of video's already online from the @springio.net conference, see www.youtube.com/@SpringIOCon... #spring #java

vite-spring-boot 0.9.0 released with support for JTE as an alternative to Thymeleaf as template engine for Spring Boot so you can have all the Vite niceness for your CSS and JavaScriipt bits. github.com/wimdeblauwe/...

vite-spring-boot 0.8.0 released: github.com/wimdeblauwe/...

Just published: "Combine Testcontainers and Spring Boot with Multiple Containers" 🐳 + 🍃 www.wimdeblauwe.com/blog/2025/05... #SpringBoot #Testcontainers #Java #Testing

What is currently the best practice to combine Testcontainers and Spring Boot to ensure containers are only started once for the whole test suite? I have always used a `ApplicationContextInitializer` with static block that starts the container. A trick I have learned from Philip Riecks.

Thinking about writing down my favorite way to architect my Spring Boot apps. Just have to decide if I will name it after a shape or a vegetable.

New release of error-handling-spring-boot-starter -> github.com/wimdeblauwe/... It now uses the response status from RestClientResponseException if that exception is thrown like it already did for ResponseStatusException.

Spring Framework 6.2 introduced MockMvcTester to support writing AssertJ style assertions. blog.jetbrains.com/idea/2025/04... In this article I have covered testing: ✨REST API JSON response ✨API exception handling ✨Thymeleaf view rendering ✨URL redirects & flash attributes ✨Model validation errors

📢 After the success of Taming Thymeleaf, I'm thrilled to reveal my next TWO projects: 'Amplifying Angular' and 'Ruling React'! After years of resistance, I've finally seen the light - JavaScript is my new true love. Thymeleaf who? 😉

ttcli 1.8.0 released which allows to select between Tailwind CSS 3 or the new version 4. Also some of the webjars have been updated. See github.com/wimdeblauwe/... for details. #springboot #thymeleaf #livereload

Just used wiremock-spring-boot for the first time, really like the smooth integration! Thank you @maciejwalkowiak.bsky.social ❤️

Interesting links about SAFe and why it is not agile.

Version 0.7.0 of vite-spring-boot has been released with a bug fix for Gradle users: github.com/wimdeblauwe/... #springboot #serversiderendering

A complete list of the top 100 most watched software engineering talks of 2024 ordered by the number of views. www.techtalksweekly.io/p/100-most-w... #webdev #programming

Modern Thymeleaf Bundle leanpub.com/b/modern-thy... by Wim Deblauwe is the featured bundle of ebooks 📚 on the Leanpub homepage! leanpub.com #Java #Html #WebDevelopment #Software #Javascript #books #ebooks #programming

RIP to Marianne Faithfull. I first found out about her through Metallica in the 90's. This was where. www.youtube.com/watch?v=RDN4...

➡️ January 20: FAA director fired ➡️ January 21: Air Traffic Controller hiring frozen ➡️ January 22: Aviation Safety Advisory Committee disbanded ➡️ January 28: Buyout/retirement demand sent to existing employees ➡️ January 29: First American mid-air collision in 16 years Making America Great Again!

Important update for ttcli users (and readers of my books). You need to update ttcli to version 1.7.0 because of the Tailwind CSS 4.0 release. See www.wimdeblauwe.com/blog/2025/01... for more information!

TailwindCSS 4.0 is released: tailwindcss.com/blog/tailwin...

Nice introduction to Spring Shell which I use for my ttcli tool.

ttcli 1.6.3 is released which now uses the just released vite-spring-boot-thymeleaf 0.6.0 version by default. See github.com/wimdeblauwe/... and github.com/wimdeblauwe/... #springboot #thymeleaf #vite

Time to immerse myself in modern front ends again 🙌 with some help from @wimdeblauwe.com

Oh hello there @wimdeblauwe.com! Fancy running into you here at #InfoSupport! (just kidding, he was here to teach us about #Thymeleaf and #htmx, and it was AMAZING)

I love getting notes like this! 😍 (It was about this blog post of mine: www.wimdeblauwe.com/blog/2021/05...)

Htmx wins the JavaScript rising stars framework category. Learn more about htmx with my book 'Modern frontends with htmx'! www.wimdeblauwe.com/books/modern...

Free e-book! Practical Guide to Building an API Back End with Spring Boot by Wim Deblauwe.

Me during holidays: not going to work on side projects so I can relax. Also me: got lots of new side project ideas from relaxing 🙈

✍️ New blog 'Problems I no longer have by using Server-side rendering'. This one has been long in the making and finally got around to finish it. If you are thinking about choosing a technology for your next web application, be sure to read this first! www.wimdeblauwe.com/blog/2024/12...

Got the build time on a Spring Boot application that uses #testcontainers from 40 minutes to 24 by using tmpfs for the MySQL database. 🤯 Never expected that much of a difference!

Example code of the micro-frontends pattern using Spring Boot and htmx: github.com/heerens/trac...

📺 New YouTube video about ttcli - a CLI to generate a Spring Boot with Thymeleaf project See youtu.be/9yX9CTTkqh8

🚨 Important bugfix release done for htmx-spring-boot! Please update to 3.6.3 or 4.0.1 as adding response headers was broken in the versions before unfortunately. We have put extra automated tests in place to avoid this in the future! github.com/wimdeblauwe/...

ttcli 1.6.1 released (CLI to generate a Spring Boot/Thymeleaf project): - Fix for Windows users - Use webjars-locator-lite if on Spring Boot 3.4 - Use htmx-spring-boot 4.0.0 if on Spring Boot 3.4 github.com/wimdeblauwe/...

My newsletter email has just been sent with some nice Cyber Monday discounts on my books. Keep an eye on you inbox 📬 Not subscribed yet? Subscribe now at www.wimdeblauwe.com/about/ and DM me to get the discount as well. #springboot #thymeleaf