spring boot | Björn Wilmsmann

Let’s talk digital.

I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Spring Boot 4 & Jackson – A Migration Guide

One of the more significant library updates that come with Spring Boot 4 is Jackson 3, which is the default JSON processing library for Spring Boot. If you're using Jackson heavily in your application, particularly when it comes to customising its behaviour, chances are you'll need to adapt your code to the new version To help you with this transition, software engineer and Spring developer advocate Dan Vega has published this article on the subject of Jackson 3 in Spring Boot 4: JsonMapper, ...

Sunday March 8th, 2026 by Bjoern in Enterprise Software, Software

Björn Wilmsmann

my blog. for you.

Let’s talk digital.

Inside Spring Boot 4: Restructuring for the Future by Moritz Halbritter @ Spring I/O 2026

Hybrid Modernization: Combining OpenRewrite’s Precision with LLM Intelligence for Spring by Raquel Pau @ Spring I/O 2026

The Spring AI Ecosystem in 2026: From Foundations to Agents @ Spring I/O 2026

Arconia for Spring Boot: Dev Services, Automated Migrations, and Seamless Workflows by Thomas Vitale

From Contracts to Confidence: Spring Cloud Contract 5 in the Age of AI by Marcin Grzejszczak

Plan Before You Build: Deterministic Planning Patterns for AI Agents by Dan Dobrin @ Spring I/O 2026

“OpenAPI and Spring-Boot 4 – What’s New?” By Badr Nass Lahsen @ Spring I/O 2026

Java Meets Typescript: Full-Stack Web App Development With Spring Boot and React by Marcus Hellberg @ Spring I/O 2024

Spring Boot Code Structure: Package by Layer vs Package by Feature by Dan Vega

Spring Boot 4 & Jackson – A Migration Guide