Spring Tips: Spring AI Redux

Hi, Spring fans! In this installment, brought to you with permission from the amazing Spring I/O 2024 conference event in Barcelona, Spain, I join Spring AI engineer Christian Tzolov for a keynote introducing some of the amazing new features in Spring AI. artificialintelligence ai springboot java...

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,...

A Bootiful Podcast: Microsoft's Sandra Ahlgrimm on cloud, Java, AI, and more

Hi, Spring fans, from the amazing Spring IO conference in Barcelona, Spain! In this interview I talked to Microsoft's Sandra Ahlgrimm on all things cloud, Java, AI, and more. Also, a special and quick discussion with Spring IO founder Sergi Almar, who was last on the show in, I think, 2020!...

This Week in Spring - May 27th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! And what a week it will be! I'm in Venice, Italy, on a little vacation, but tomorrow I begin a quick journey to beautiful Sofia, Bulgaria, where I'll be speaking at the amazing JPrime software show it's my first time speaking...

SBOM support in Spring Boot 3.3

Spring Boot 3.3.0 has been released, and it contains support for SBOMs. SBOM stands for "Software Bill of Materials" and describes the components used to build a software artifact. In the context of this blog post, that's your Spring Boot application. These SBOMs are useful because they describe...

A Bootiful Podcast: Tagir Valeev, Fellow Java Champion and IntelliJ IDEA Java legend

Hi, Spring fans! In today's installment we talk to Tagir Valeev, a fellow Java Champion and IntelliJ IDEA Java legend. Also: don't forget to try out the just-released Spring Boot 3.3 release!...

Arbitrary File Write Vulnerability in Spring Cloud Data Flow

Spring Cloud Data Flow is a microservices-based Streaming and Batch data processing in Cloud Foundry and Kubernetes. The Skipper server has the ability to receive upload package requests. However, due to improper sanitization for upload path, a malicious user who has access to skipper server api...

This Week in Spring - May 21st, 2024

Welcome to another installment of This Week in Spring! It's been yet another amazing and exciting week and with it a bevy of new releases. And of course, in about a week's time, we will find ourselves at Spring IO, ready to show a lot of these new things. Will you be there? I will! Anyway, let's...

Deploy and Scale Spring Batch in the Cloud – with Adaptive Cost Control

May 21, 2024, at 9 AM PST You can now use Azure Spring Apps to effectively run Spring Batch applications with adaptive cost control. You only pay when batch jobs are running, and you can simply lift and shift your Spring Batch jobs with no code change. Spring Batch is a framework for processing...

A Bootiful Podcast: Oleg Šelajev, Docker and Testcontainers legend

Hi, Spring and Testcontainers fans! In this interview, I talk to Oleg Šelajev...

This Week in Spring - May 14th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! This week's highlights in the Spring ecosystem emphasize the ongoing advancements and applications of Spring AI. The discussions range from exploring the impressive VectorStore abstraction and enhanced structured output suppo...

A Bootiful Podcast: Spring Boot cofounders Phil Webb and Dr. David Syer on the occasion of the 10th Anniversary of Spring Boot 1.0

Hi, Spring fans! In this installment I talk to cofounders Phil Webb and Dr. David Syer, on the occassion of the 10th Anniversary of Spring Boot...

Spring AI - Structured Output

UPDATE: 04.06.2024 Adde snippets for using structured output with the new, fluent ChatClient API . UPDATE: 17.05.2024 Generic Types support for BeanOutputConverter added. Science works with chunks and bits and pieces of things with the continuity presumed, and Art works only with the continuities...

This Week in Spring - May 7th, 2024

Hi, Spring fans! Welcome to another amazing installment of This Week in Spring! I'm in bellisima Rome, Italy, where I've just spent time in some fun meetings, and now I'm off to lovely London, UK, for Devoxx UK 2024. It's going to be amazing. If you're there, don't hesitate to say hi! I've got to...

Spring Tips: Vector Databases with Spring AI

Hi, Spring fans! In this installment, we look at the amazing support for vector databases in Spring AI...

A Bootiful Podcast: Carl Azoury, Zenika founder and CEO

Hi, Spring fans! In this installment I talk to Zenika founder and CEO Carl Azoury, and friend to the community and a part of the Spring story for decades...

Spring Tips: Beans, Beans: What's in a Spring bean?

Hi, Spring fans! In this installment we explore the essential Spring bean. What are they, how are they created, and what do they mean to you?...

Spring Tips: Spring Cloud Gateway for Spring MVC

Hi, Spring fans! In this installment, we revisit Spring Cloud Gateway, this time to look at the fantastic new support for Spring MVC, made all the more amazing by Java 21's virtual threads...

This Week in Spring - April 30th, 2024

Welcome to yet another amazing installment of This Week in Spring! As usual, we've got a ton of stuff to get into, so let's dive right into it! Chris Bono announces the new versions of Spring Functions Catalog and Spring Cloud Streams Applications In last week's installment of A Bootiful Podcast,...

A Bootiful Podcast: Daniel Garnier-Moiroux on Passkeys and Spring Security

Hi, Spring fans! In this installment, I talk to my friend and colleague Daniel Garnier-Moiroux about the amazing awesome implications of passkeys in a Spring Security application...

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...

Spring AI - Multimodality - Orbis Sensualium Pictus

Humans process knowledge, simultaneously across multiple modes of data inputs. The way we learn, our experiences are all multimodal. We don't have just vision, just audio and just text. These foundational principles of learning were articulated by the father of modern education John Amos Comenius...

A Bootiful Podcast: Spring founders Rod Johnson and Juergen Hoeller on the 20th Anniversary of Spring Framework 1.0

Hi, Spring fans! In this episode, more than 20 incredible years in the making, Spring founders Rod Johnson @springrod and Juergen Hoeller @springjuergen discuss Spring since its 1.0 release in 2004...

Spring Tips: GRPC

Hi, Spring fans! In this installment, we look at how to create GRPC-based services with Spring Boot...

This Week in Spring - April 16th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm writing this from beautiful Paris, France, ahead of the amazing Devoxx France event. I've come to almost all of these events over the years. It's hard to believe it's been more than a decade since the show was first...

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 ...

A Bootiful Podcast: Marit van Dijk, Jetbrains Developer Advocate

Jetbrains Developer Advocate Marit van Dijk on reading code, IntelliJ IDEA, and more...

Spring Framework 6.2.0-M1: all the little things

The Spring Framework team has been busy reviewing the issue tracker in anger and reducing the number of opened issues. This was long overdue, with a number of issues being invalid or superseded in the meantime. This helped the team focusing on a more manageable amount of issues and we used the...

Spring Framework URL Parsing with Host Validation (3rd report)

Applications that use UriComponentsBuilder to parse an externally provided URL e.g. through a query parameter AND perform validation checks on the host of the parsed URL may be vulnerable to a open redirect attack or to a SSRF attack if the URL is used after passing validation checks. This is the...

Spring Tips: the Spring Expression Language

Hi, Spring fans! In this installment, I look at the excellent Spring Expression Language, an embedded language for resolving simple expressions that is built right into the Spring Framework...

This Week in Spring - April 9th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Las Vegas, NV, at the moment, preparing for my part in the huuuuuge Google Cloud Next keynote. I'm so excited! And then it's off to the amazing and glorious Devnexus event! If you're at either event, please say Hi!. Fu...

A Bootiful Podcast: Netflix’s Paul Bakker and Kavitha Srinivasan on scaling Spring Boot and Spring GraphQL

Hi, Spring fans! In this installment, I'm thrilled to be joined by Netflix's Paul Bakker and Kavitha Srinivasan, who explain how they're integrating and evolving Spring for GraphQL in their own GraphQL stack and how they're managing, growing, and evolving thousands of services written in Spring B...

This Week in Spring - April 2nd, 2024

Welcome, welcome, welcome, to another installment of This Week in Spring! You know, we've come a long way since you and I last spoke. It's April already! A new month! How bizarre. And, with the dawning of a new month, we're also more than 25% through this year! I sure hope you're paying attention...

Spring Tips: Hello, Java 22!

Hi, Spring fana! In this installment, I look at the amazing, just-released, Java 22!...

A Bootiful Podcast: Joseph Ottinger and Andrew Lombardi on "Beginning Spring 6"

Hi, Spring fans! In this episode I'm joined by Java luminaries and Apress' Beginning Spring 6 authors Joseph Ottinger and Andrew Lombardi...

This Week in Spring - March 26th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! Sam Brannen shares some good news: a null-safe Index operator for the Spring Expression Language SpEL is coming to Spring Framework 6.2! This is interesting, and a nice application of AI do I even need to spell out "artificia...

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...

A Bootiful Podcast: Stuart Marks (aka ”Dr. Deprecator”) on Java, its amazing features, and more

Hi, Spring fans! Happy one-day-belated Java 22 release day to those who celebrate! To ring in the new release, we've got an extra special and incredible discussion with a Java legend - somebody who's been involved in the Java community and work for decades - Stuart Marks, or "Dr. Deprecator," as...

Spring Tips: the Exposed ORM for Kotlin

Hi, Spring fans! In this installment we look at the Exposed Object Relational Mapper framework for Kotlin. Kotlin Java JDBC springboot...

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-...

Hello, Java 22!

update I've since published a Spring Tips video on this very topic! If you'd prefer, you could watch that instead. Hi, Spring fans! Happy Java 22 release day, to those who celebrate! Did you get the bits already? Go, go, go! Java 22 is a significant improvement that I think is a worthy upgrade fo...

PKCE Downgrade in Spring Authorization Server

Spring Authorization Server versions 1.0.0 - 1.0.5, 1.1.0 - 1.1.5, 1.2.0 - 1.2.2 and older unsupported versions are susceptible to a PKCE Downgrade Attack for Confidential Clients. Specifically, an application is vulnerable when a Confidential Client uses PKCE for the Authorization Code Grant. An...

Token Exchange support in Spring Security 6.3.0-M3

I'm excited to share that the there will be support for the OAuth 2.0 Token Exchange Grant RFC 8693 in Spring Security 6.3, which is available for preview now in the latest milestone 6.3.0-M3. This support provides the ability to use Token Exchange with OAuth2 Client. Similarly, server-side suppo...

Possible Broken Access Control in Spring Security With Direct Use of AuthenticatedVoter

In Spring Security, versions 5.7.x prior to 5.7.12, 5.8.x prior to 5.8.11, versions 6.0.x prior to 6.0.9, versions 6.1.x prior to 6.1.8, versions 6.2.x prior to 6.2.3, an application is possible vulnerable to broken access control when it directly uses the AuthenticatedVotervote passing a null...

Spring Boot Testjars founder Rob Winch

Hi, Spring fans! In this week's installment we talk Rob Winch, lead of Spring Security and founder of the exciting new project Spring Boot Testjars...

Hypermedia and Browser Enhancement

Front end development these days is dominated by large JavaScript client side frameworks. There are plenty of good reasons for that, but it can be very inefficient for many use cases, and the framework engineering has become extremely complex. In this article, I want to explore a different...

Spring Framework URL Parsing with Host Validation (2nd report)

Applications that use UriComponentsBuilder to parse an externally provided URL e.g. through a query parameter AND perform validation checks on the host of the parsed URL may be vulnerable to a open redirect attack or to a SSRF attack if the URL is used after passing validation checks. This is the...

This Week in Spring - March 12th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! And what a week it's going to be! Do this first: we need your help! Please answer some questions in our State of Spring survey! Join me for a look at the latest-and-greatest, chronicling how I got started with Spring Boot in...

Spring Tips: Spring Batch Remote Partitioning, your easy button for data scale!

Hi, Spring fans! In this installment, Spring Developer Advocate Josh Long looks at how to use Spring Batch's remote partitioning support to easy-button your data processing scale out strategies. postgresql ai datascience data springboot java java21...

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...