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Spring Boot 4.0.0 RC1 Release Notes
To help with upgrading, a migration guide is available.
The classic uber-jar loader has been removed from this release. You should remove any loader implementation configuration from your build file.
For maven this means removing the following:
<loaderImplementation>CLASSIC</loaderImplementation>For Gradle, it will be lines similar to:
loaderImplementation = org.springframework.boot.loader.tools.LoaderImplementation.CLASSICOptional dependencies are no longer included in uber jars.
If you need them, you can use the configuration setting <includeOptional>true</includeOptional>
The JSON-specific spring.jackson.read.* and spring.jackson.write.* properties have moved beneath spring.jackson.json.read and spring.jackson.json.write respectively.
The properties for Spring Session Data Redis and Spring Session Data MongoDB have been renamed to reflect the dependencies on Spring Data Redis and Spring Data MongoDB respectively.
Properties that previously began with spring.session.redis now begin with spring.session.data.redis. Similarly, properties that previously began with spring.session.mongodb now begin with spring.session.data.mongodb.
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Tip
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Check the configuration changelog for a complete overview of the changes in configuration. |
Spring Boot 4.0.0-RC1 moves to new versions of several Spring projects:
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Numerous third-party dependencies have also been updated, some of the more noteworthy of which are the following:
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