Hi, Spring fans! How're you doing this fantastic October afternoon? I'm on a train returning from Frankfurt, Germany, where I spoke at the Cloud Foundry Day Frankfurt event about how awesome it is to build an application with Spring Boot and Cloud Foundry. Yesterday I was in Antwerp, Belgium, and did two workshops, each of three hours duration. Now, I'm on my way back to Antwerp to return to Devoxx Belgium. I'll be doing a talk on Spring Boot 4; another joint talk with James Ward and the Spring AI leads Dr. Mark Pollack and Christian Tsolov; and a joint talk with GraalVM founder Thomas…

This is a new blog post in the Road to GA series, this time sharing more details on the new Jackson 3 support, just a few days after Jackson 3.0.0 GA release, about to be introduced in Spring Boot 4 and related Spring portfolio projects.

Jackson is by far the most used JSON library on the JVM, and the introduction of the Jackson 3 support in Spring is the opportunity for us to provide additional enhancements, as a follow-up of the popular Jackson integration improvements in Spring that I announced more than 10 years ago!

Close collaboration between Spring and Jackson teams

When the Spring team…

Hi, Spring fans! In this installment we talk to Spring tooling legend Dr. Kris De Volder on tooling, AI, and so much more.

Model Context Protocol, or MCP for short, has taken over the AI world. If you've been following our blog, you've probably read the introduction to the topic, Connect Your AI to Everything: Spring AI's MCP Boot Starters. The security aspects of MCP have been evolving fast, and the latest version of the spec is getting more and more support from the ecosystem. To meet the needs of Spring users, we have incubated a dedicated project on Github: spring-ai-community/mcp-security. This week, we pushed our first releases, and you can now add them to your Spring AI 1.1.x-based applications. In this…

Hi, Spring fans! As I write this I am about to board a flight for Colorado for the amazing Dev2Next conference! I'll be in Antwerp, Beglium for the amazing Devoxx event next week, and I'll be speaking at the Amsterdam JUG with James Ward on the Thursday after that, too! If you're around, be sure to say Hi!

• I looked at some of the amazing new resilience methods in Spring Framework 7
• here's a nice talk on how to continuously align and ugprade your Spring dependencies, recorded at this year's Spring IO 2025 event in beautiful Barcelona, Spain!
• I love this! Check out some of the prelimary details of the MCP Security community project for Spring AI
• for more on that, check out the Securing MCP Servers with Spring AI
• I love this blog called The State of HTTP Clients in Spring
• On last week's installment of A Bootiful Podcast, I talked Spring Batch lead Mahmoud Ben Hassine
• Interesting! Udemy has a course: …

This is a new blog post in the Road to GA series, this time exploring the new capabilities of our HTTP clients. This is also a good time to reflect on the state of HTTP clients in Spring, so we will use this opportunity to explain an important announcement: we are officially deprecating RestTemplate.

Upcoming RestClient features

RestClient has been introduced in Spring Framework 6.1 and evolved in the 6.x line. In the upcoming 7.0 major version we are keeping up the pace with a round of new features.

API Versioning

Spring @Controller now supports the API Versioning concept to better implement different generations of your REST API within a single application. This feature is also supported on the client side, by using an ApiVersionInserter…

Hi, Spring fans! In this installment we talk to the legendary lead of the Spring Batch project, Mahmoud Ben Hassine, about the latest-and-greatest in Spring Batch in the Spring Boot 4 generation.

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm preparing my talks for several amazing shows including: Commit Your Code conference in Plano, Texas (starting tomorrow); Dev2Next in Colorado; Devoxx Belgium in Antwerp, Belgium; and CloudFoundry Days in Germany. So much good stuff comin' up! And so much good stuff in the community this week, as well, so let's dive right into it!

• I love this! One of my favorite new features in Spring Framework 7 is the new HTTP Service Clients
• there's so much good stuff coming in Spring AI 1.0.2 and improved MCP support
• Spring Modulith 2.0 M3 released. This new release includes updated event publication repository implementations for JPA, Jackson 3 support, and so much more.
• in last week's installment of A Bootiful Podcast, I talked to the amazing Spring Cloud lead Spencer Gibb
• Spring Boot 3.4.10 is available now
• Spring Boot 3.5.6 available now
• Spring Boot 4.0.0 M3 available now
• Spring AI 1.0.2 is available now
• …

In this 3rd blog post of the Road to GA series that’s highlighting major features within the Spring portfolio for the next major versions to be released in November we’ll have a look at new features for HTTP service clients, which are a collaborative effort across several Spring projects.

Introduction

Spring Framework 6 introduced the ability to define an HTTP service through a Java interface with @HttpExchange-annotated methods. For example:

public interface MilestoneService {

    @GetExchange("/repos/{org}/{repo}/milestones")
    List<Milestone> getMilestones(@PathVariable String org…