What’s New in Spring Boot 3.1.2? Key Features, Improvements & Fixes

Spring Boot 3.1.2 has been officially released, bringing many new features, improvements, and bug fixes.

<code>plugins {
  id 'org.springframework.boot' version '3.1.2'
}
</code>

Or use Maven:

<code><properties>
    <spring-boot.version>3.1.2</spring-boot.version>
</properties>
</code>

Please note that Spring Boot 3.1.x requires Java 17 or higher.

For more details, see the release notes.

Spring Boot 3.1.2 Changelog (2023-07-20)

New Features

Upgrade to Spring Framework 6.0.6

Support Java 19

Devtools can now monitor additional file extensions such as .proto, .thrift, and .wsdl for automatic restart

Improvements

Micrometer metric collection enhanced, allowing WebFlux‑applied limits to report request rates

Improvements to REST Docs, testing, and dependency management modules

Bug Fixes

Fixed @DataMongodbTest failure when no MongoDB server is present

Fixed Devtools restart failure when using Java 19 preview features

Fixed cases where Actuator /metrics could not display all metrics

Overall, this version adds Java 19 support, enhances several modules, and includes numerous bug fixes, making it an important maintenance release.