Introducing Java Functions for Spring Cloud Stream Applications - Part 0

We are happy to announce the release of Spring Cloud Stream applications 2020.0.0-M2. This release is a complete overhaul of the legacy Spring Cloud Stream App Starters. Starting with this release, we are moving away from theme-oriented release train names (famous scientists in alphabetical order) to calendar based versioning. The current GA release is called Einstein, and we are pleased to introduce 2020.0.0-M2. We are also moving away from the app starters. Having reorganized, repackaged, and (in some cases) rewritten the underlying code, we now have a new Git repository: spring-cloud/stream-applications: Functions and Spring Cloud Stream Applications for data driven microservices.

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First milestone of Reactor 2020.0 (Codename Europium)

Earlier this month, we released a first milestone of Reactor 2020.0.
This cycle, codename Europium, follows the Dysprosium one (which included reactor-core 3.3.x and reactor-netty 0.9.x).

It includes reactor-core 3.4.0 and reactor-netty 1.0.0.

In this blog post, we’ll cover a few highlights of the reactor-core milestone, and briefly mention what’s in store for M2.

For reactor-netty, we’ll link to a separate blog post here as soon as it is out.

Note also that there is a new versioning scheme in place, which has been adopted accross the Spring portfolio: see the reference guide and this blog post.

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This Week in Spring - July 7th, 2020

Hi, Spring fans! What a crazy week it’s been! How are you? I hope you’re safe, healthy, happy.

I’ll be speaking later today (Tuesday) at the Accento Digital conference and at the Jetbrains Java Day online event on the 10th (Friday). Both of these should be accessible from EMEA and APJ timezones. I look forward to seeing you there!

We’ve got a ton of good stuff to get to this week so let’s get to it!

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Spring Security 5.4.0-M2 Released

On behalf of the community, I’m pleased to announce the release of Spring Security 5.4.0-M2! You can find the complete details in the release notes and the highlights below:

OAuth 2.0

gh-8700 - OAuth2AuthorizedClientArgumentResolver picks up OAuth2AuthorizedClientManager bean
gh-8730 - Add JWTProcessor Configuration Post-Processor
gh-8669 - OAuth2AuthorizedClientArgumentResolver for XML
gh-8587 - Add ServerRequestCache setter in OAuth2AuthorizationCodeGrantWebFilter
gh-8603 - oauth2Client Test Support no longer requires an HttpSessionOAuth2AuthorizedClientRepository
gh-8501 - Add issuerUri to ClientRegistration
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This Week in Spring - June 30th, 2020

Hi, Spring fans! Welcome to another installment of This Week in Spring! What a wonderful week it’s been and it’s only Tuesday! I spoke to folks in Switzerland on Monday, had a few awesome meetings with folks later, then today spoke to folks in Germany in the morning and then folks in APJ (Singapore, mostly) in the evening. And tomorrow, I’m speaking at the JPoint virtual conference about Bootiful Kotlin. I’d love to see you there!

Now then, we’ve got a ton of things to look at this roundup so let’s get to it!

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URL Matching with PathPattern in Spring MVC

The recent Spring Framework 5.3 M1 release announcement mentions “Spring MVC comes with PathPattern parsing for efficient URL matching”. This post expands on that with more context and detail.


In Spring applications AntPathMatcher is used to identify classpath, file system, remote, and other resources in Spring configuration. It has also been used in Spring MVC to match URL paths. Over time the use of patterns in web applications grew in number and syntax with AntPathMatcher evolving to meet those needs but some pain points remain without a solution:

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Spring Boot 2.4.0-M1 is now available

On behalf of the team and everyone that contributed, I am pleased to announce that the first milestone of Spring Boot 2.4 has been released and is available from our milestone repository. This release closes over 120 issues and pull requests.

Please note the slight change in the format of the version. 2.4.0-M1 is the first Spring Boot release to use the new versioning scheme.

With Spring Boot 2.4, we have switched to a 6-month release cadence. All being well, you can expect to see 2.4.0 reach general availability in October or November.

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Spring Integration 5.4 M1 Available

Dear Spring community,

On behalf of the team and everyone who contributed, it is my pleasure to announce the first milestone for Spring Integration 5.4 generation.

It can be downloaded from our milestone repository:

compile 'org.springframework.integration:spring-integration-core:5.4.0-M1'

The Spring Integration 5.4 generation is full based on recently released Spring Framework 5.3 M1 including all the deprecation resolutions, removal some obsolete API and aggressive upgrade the latest versions for dependencies.

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