Kotlin DSLs in the world of Springdom

Kotlin is a beautiful language that makes it trivial to take old Java libraries and make them much more concise, just by virtue of the Kotlin syntax itself. It shines, however, when you write DSLs. Here's some inside baseball for you: the Spring teams do their level-headed best to be cohesive, to...

New in Spring 6.1: RestClient

Spring Framework 6.1 M2 introduces the RestClient, a new synchronous HTTP client. As the name suggests, RestClient offers the fluent API of WebClient with the infrastructure of RestTemplate. Fourteen years ago, when RestTemplate was introduced in Spring Framework 3.0, we quickly discovered that...

This Week in Spring - May 5th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's May 5th, 2026, and I'm in Mainz, Germany, for the legendary JAX conference! It's been infinitely far too long since I've been at this amazing show, and I'm oh-so happy to be back here! Tonight, after my two talks here, I...

Azure Spring Apps Enterprise is now generally available

Hi, Spring fans! This is a guest post by Julia Liuson, President, Developer Division, Microsoft Azure Spring Cloud is now Azure Spring Apps We launched Azure Spring Cloud with VMware in 2019 to solve common challenges developers, IT operators, and DevOps teams face when running Spring Boot...

Announcing Spring AI MCP: A Java SDK for the Model Context Protocol

We're excited to introduce Spring AI MCP, a robust Java SDK implementation of the Model Context Protocol MCP. This new addition to the Spring AI ecosystem brings standardized AI model integration capabilities to the Java platform. What is MCP? The Model Context Protocol MCP is an open protocol th...

CVE Report Published for Spring Tools

We have released STS 4.16.1 for Eclipse and Spring VSCode extensions 1.40.0 to address the following CVE report: - CVE-2022-31691: Remote Code Execution via YAML editors in STS4 extensions for Eclipse and VSCode Please review the information in the CVE report and upgrade immediately. Eclipse: STS...

How to integrate Hibernates Multitenant feature with Spring Data JPA in a Spring Boot application

For quite some time now, Hibernate has offered a Multitenant feature. It integrates nicely with Spring, but there is not much information about how to actually set it up, so I thought an example or two or three could help. There is already an excellent blog article, but it is a little dated and i...

This Week in Spring - January 23rd, 2024

Hi, Spring fans, and greetings from CERN, home of the famous Large Hadron Collider, where I'm speaking again at the VOXXED Days CERN 2017 event. It's been an amazing almost week here in lovely Switzerland, first in Lugano for VOXXED Days Ticino, and now in Geneva. I'm super excited to be here, bu...

This Week in Spring - August 16th, 2022

Hi, Spring fans! Welcome to another wonder-filled installment of This Week in Spring! Its been a week! Sometimes I can scarcely believe it myself. And can you believe its August 16th already?? My daughters starting school this week! Were in the northern hemisphere, and Summer break is already ove...

Spring Tips: Learn Spring for GraphQL (parts 5 and 6 of an ongoing series)

Hi, Spring fans! In thi^^^ these installments, we continue our series introducing the Spring for GraphQL project. This series features Spring for GraphQL lead Rossen Stoyanchev @rstoya05 - whose work you may know from basically everything in the wide and wonderful world of Springdom having to do...

This Week in Spring - January 9th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's the second week of 2024, and I am already thinking about 2025! And, a bit more immediatelt than that: the next two weeks. I'll be at both VOXXED DAYS Ticino and VOXXED DAYS CERN, both in Switzerland. If you're about, com...

This Week in Spring - November 22nd, 2022 - Spring Boot 3 and Thanksgiving edition!

Hi, Spring fans! Its Tuesday, the 22nd of November, 2022, as I write this, which means were two days away from Spring Boot 3 and Thanksgiving. Spring Boot 3, Ive written about in abundance so I wont rehash that. If you want to learn more about some of the amazing new features in Spring Framework ...

MCP Authorization in practice with Spring AI and OAuth2

Last month, we explored how to secure Spring AI MCP Servers1 with the OAuth2 authorization framework. In the conclusion of that article, we mentioned we'd explore using standalone Authorization Servers for MCP Security and deviate from the then-current specification. Since we published the articl...

Native Support in Spring Boot 3.0.0-M5

The Spring Team has been working on native image support for Spring Applications for quite some time. After 3+ years of incubation in the Spring Native experimental project with Spring Boot 2, native support is moving to General Availability with Spring Framework 6 and Spring Boot 3! Native image...

This Week in Spring - September 20th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring wherein I endeavor as best as I can to capture the latest-and-greatest in the wide, wacky, and wonderful world of Springdom! Naturally, I fail miserably basically every week. Theres no way I could hope to capture everything of...

Spring Security OAuth reaches End-of-Life

The Spring Security OAuth and Spring Security OAuth Boot 2 auto-configuration projects have reached end of life. The Spring Security OAuth project has been replaced by the Client and Resource Server support provided by Spring Security and the Authorization Server support provided by Spring...

Bootiful Spring Boot in 2024 (part 1)

NB: the code is here on my Github account: github.com/joshlong/bootiful-spring-boot-2024-blog. Hi, Spring fans! I'm Josh Long, and I work on the Spring team. I'm excited to be keynoting and giving a talk at Microsoft's JDConf this year. I'm a Kotlin GDE and a Java Champion, and I'm of the opinion...

This Week in Spring - 28 November, 2023

Hi, Spring fans! I hope everyone who celebrated Thanksgiving had a wonderful time. Did you indulge in too much turkey? Anyway, let's jump into this week's edition of This Week in Spring—a particularly special one for a couple of reasons. First, it's our first issue after the launch of Spring Boot...

This Week in Spring - September 27th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Its the last week of September, already! The years more done than not. The days are receding into darkness earlier. And the Pumpkin Spice Lattes are upon us. The darker and colder days are kind of a bummer, but Im stil excite...

This Week in Spring - November 19th, 2024

Hi, Spring fans! How are you? Can you believe we're already staring at the end of the month? It's that time of the year when we see new releases, and the new releases reflect that frenzy! Soon: Spring Boot 3.4.0! Are you updated? Make sure you're updated! Remember: Spring projects leave open sour...

RestClient Support for OAuth2 in Spring Security 6.4

In Spring Security 6.2 and 6.3, we have worked to steadily improve configuration for applications using OAuth2 Client. Configuration for common use cases has been simplified by allowing applications to publish beans which are automatically included in the overall OAuth2 Client configuration durin...

Reflectionless Templates With Spring

A few Java libraries have shown up recently that use text templates, but compile to Java classes at build time. They can thus claim to some extent to be "reflection free". Together with potential benefits of runtime performance, they promise to be easy to use and integrate with GraalVM native ima...

Simplified Event Externalization with Spring Modulith

Transactional service methods are a common pattern in Spring applications. These methods trigger a state transition important to the business. This usually involves a core domain abstraction, such as an aggregate and its corresponding repository. A stereotypical example of such an arrangement mig...

This Week in Spring - January 9th, 2023

Hi, Spring fans! As I write this Im on a plane winging my way to Helsinki, Finland. A new year and new journeys begin. Its going to be cold there. Wish me luck! Do you know what always warms me up? The thrill of learning. And this weeks no different. This week weve got some good stuff line up so...

Spring Cloud Azure 5.0 is now Generally Available

We're very pleased to announce that Spring Cloud Azure 5.0 is now generally available. This major release includes the following features, improvements, and documentation updates: Compatible with Spring Boot 3 and Spring Cloud 2022.0.0 Supports Passwordless Connections Updated Azure for Spring...

Spring Cloud Azure 5.0 is now Generally Available

We're very pleased to announce that Spring Cloud Azure 5.0 is now generally available. This major release includes the following features, improvements, and documentation updates: Compatible with Spring Boot 3 and Spring Cloud 2022.0.0 Supports Passwordless Connections Updated Azure for Spring...

This Week in Spring - February 10th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's February 10th, 2026, as I write this from lovely London, UK. I spoke at the local Java User Group here last night, had a wonderful time. Tomorrow, I'm going home. It's been fun, but it's time to conclude this roller...

This Week in Spring - September 19th, 2023 (Java 21 Edition)

Hi, Spring fans! Welcome to another installment of This Week in Spring - Java 21 edition! The big news, indeed, the biggest news, is that Java 21 is now available here! You should use SDKMAN to install it, like this: sdk install java 21-graalce && sdk default java 21-graalce. This install givews...

Context Propagation with Project Reactor 1 - The Basics

This post is a part of a series: 1. The Basics 2. The bumpy road of Spring Cloud Sleuth 3. Unified Bridging between Reactive and Imperative Spring Boot 3 and Spring Framework 6 brought us a unified and consistent way to enable Observability in applications that use Micrometer. The evolution from...

Spring Modulith 0.3 released

Hot on the heels of Spring Boot 3.0.2, I am excited to announce the 0.3 release of Spring Modulith. The release is packed with improvements. We have tweaked a couple of things that might require your attention and a couple of adapting changes to your code. The most notable changes are: GH-114 – W...

This Week in Spring - September 5th, 2022

Hi, Spring fans! How are you? Its a fantastic Tuesday, the 5th of September, 2022, and I couldnt be happier. Its also Labor Day weekend here in the US. It marks the unofficial end of summer, which is a bit sad. But, on the upside, its a four-day weekend for me! Im technically off today. So, youll...

This Week in Spring - June 25th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! As I write this I'm in beautiful Amsterdam, having visited with customers and spoken at a local Java User Group. Now I'm off to lovely London, UK. Last week I was in Krakow, Poland, for the amazing Devoxx PL event, and in Par...

This Week in Spring - Tuesday, April 23rd, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! We've had a really busy, wonderful week, as always, so let's dive right into it! We want you! ...to submit a talk to SpringOne 2024, in sunny Las Vegas! Hurry, the CFP closes May 3rd! Spring Shell 3.1.11, 3.2.4, and 3.3.0-m1...

This Week in Spring - June 14th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Ive just arrived in beautiful Berlin, Germany, for the forthcoming We Are Developers show with more than five thousand attendees. I was in Toronto, Canada, for the epic SpringOne Tour installment there. Ive also had the...

Using Spring for GraphQL with Spring Data Neo4j

Introduction This is a guest blog post by Gerrit Meier from Neo4j who maintains the Spring Data Neo4j module. A few weeks ago version 1.2.0 of Spring for GraphQL was released with a bunch of new features. This also includes even better integration with Spring Data modules. Motivated by those...

This Week in Spring - June 4th, 2024

Hi, Spring fans, from London! I'm in this fabulous country doing my level-headed best to refrain from dooing Mr. Bean bits, because, honestly, if I - an avid and prolific fan of Spring and its many beans - can't be "Mr. Bean," then I'm glad Rowan Atkinson is! I'm here for a SpringOne Tour event,...

This Week in Spring - August 29th, 2023 - the post SpringOne recovery blog

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm exhausted. Seriously. Last week was mental. If you need me, I'll be over sipping on a tea... But, before that, there's a ton of things to cover from this last week, as always, and there's no rest for the curious, so let's...

This Week in Spring - May 30th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! This installment I write on the day of my daughter's High School graduation, an auspicious day indeed! There's a lot to get through this week, though, and I have a graduation to get to, so let's dive right in! Spring...

Spring Framework 6.2.0-M1: Overriding Beans in Tests

Spring Framework 6.2.0-M1 has been released, including changes that resolve more than one hundred issues. Among those are a range of new features in Spring's testing support. In this post, I’d like to walk you through one of these new testing features: Bean Overriding support. The previous state ...

Spring Web Flow 3.0 M1 Released

It has been almost 4 years since the last set of Spring Web Flow releases. Nevertheless, the project continues to serve a specific need particularly well, arguably better than alternatives, and remains in active use. While there hasnt been a strong driver for new releases, the upcoming Spring...

This Week in Spring - February 24th, 2026

Hi, Spring fans! Welcome to another awesome and oh-so-agentic week in Spring! We've got a ton to look into, and I've got even more to prepare for next week's DevNexus event in Atlanta, GA, so let's dive right into it! Be sure to say "hi" if you're going to be there, though! You've heard of Agent...

This Year in Spring – December 30th, 2025

Hi, Spring fans! Can you believe it? It's already the 30th of December! I celebrated Christmas with my family in Los Angeles, then we jumped on a flight headed for Southeast Asia to ring in the New Year with more friends and family. I'm sitting at a café in the sweltering city of Kuala Lumpur,...

This Week in Spring - April 8th, 2025

Hi, Spring fans! How are ya? I'm doing fine. Excited, even. You see, Spring AI M7 is coming soon! In theory, it drops on Thursday. Don't hold us to that — these things can change :- But soon , and it's turning out to be a whopper of a release! You should try upgrading your application to the new ...

This Week in Spring - February 20th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you this fine 20th of February, 2024? I'm doing alright on this rainy 20th of Feburary here in San Francisco, and I hope you are too! We've got a ton of things to get into this week so let's dive right into it! Have y...

This Week in Spring - December 6th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you? You know what Ive wanted to do? See my friends on the Spring team in person since the pandemic descended. And, Im overjoyed to relate, Ive just had the privilege of a nice meeting with several of them last night...

This Week in Spring - November 29th, 2022 (Spring Boot 3 has arrived)

Hi, Spring fans! Its here! Its finally here, at long last! Spring Boot 3!! And of course with Spring Boot 3.0 comes a whole portfolio of integrated projects that have also been updated! Remember, a huge theme in this release is support for GraalVM native images, and thats now supported across the...

Microsoft is committed to the success of Java developers

Hi, Spring fans! This is a guest post from our friend Julia Liuson, President, Developer Division, Microsoft As a company, we are committed to making Java developers as efficient and productive as possible. This commitment means empowering you to use any tool, framework, and application server on...

This Week in Spring - July 19th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! This week Im trying to wind down some threads and take some vacation with my family. Its going to be an amazing time, indeed! But that doesnt stop the deluge of novelties and news in the wide world of Springdom, so weve got a...

This Week in Sprng - March 11th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's a busy week as always, fresh off the rush that was Devnexus and busily preparing for the fun that is JavaOne! It's going to be epic! want to learn about dependency injection, auto-configuration, Spring Framework, Spring...

This Week in Spring - March 19th, 2024

Hi, Spring fans! And happy Java 22 release day to those who celebrate! I just put out a huge blog detailing many of the exciting new features in Java 22. Check it out! As usual, we've got a packed roundup to get through this week so let's dive right into it! the Spring Authorization Server 1.3.0-...