spring-projects/spring-boot v2.4.0-RC1 on GitHub

⭐ New Features

Provide dependency management for jOOQ's new jooq-kotlin module #23964
Provide a configuration property for the driverClassName of the Liquibase DataSource #23958
Move spring.resources.* properties to spring.web.resources.* #23917
Provide configuration properties for setting the logging charsets #23827
Add auto-trimming support to configtree property sources #23826
Add configuration properties for RabbitMQ's batch listener config #23766
Expose BootBuildImage's cleanCache property as a command-line option #23753
Allow a SAML2 relying party registration's assertion consumer service binding and location to be configured via application properties #23746
Rename spring.security.saml2.relyingparty.*.relying-party-entity-id to spring.security.saml2.relyingparty.*.entityId #23745
Add a command line option for image.cleanCache when building with Maven #23719
Allow a SAML2 relying party registration's decryption X509 credentials to be configured via application properties #23705
Add support for CNB platform API 0.4 #23692
Allow TestPropertyValues.of to take a Map source #23685
Rationalize Logback logging properties #23609
When building with Maven, include project dependencies in the application layer by default #23463
Provide properties to configure WebFlux's locale and how it's resolved #23449
Remove skipping of spring-boot-* projects when determining what is eligible for DevTools restart #23158
Make @PropertyMapping support nested annotations #23146
Change favicon default StaticResourceLocation #23126
Update TextResourceOrigin to show the source jar of a ClasspathResource #23019
Use stricter multi-document properties separator logic #22963
Support wildcard configtree imports #22958
Support Gradle's configuration cache with Gradle 6.7 and later #22922
Provide a property for configuring the base path of the Actuator's endpoints when using WebFlux #22906
Allow proxied @SpyBeans to be used with Mockito's inline mock maker #22416
Fail with exception if management.server.address is set but actuator is on the same port #22187
Don't adapt RandomPropertySource to ConfigurationPropertySource #21659
Auto-configuration of MethodValidationPostProcessor prevents the use of @Validated on final @ConfigurationProperties classes #21454
Allow @WebListener ServletContextListeners to programmatically add servlets and filters #18303

🪲 Bug Fixes

Configuration property annotation processor does not notice overriding getter methods #23970
Incremental compilation does not keep metadata for inner classes #23960
Maven plugin build-image creator step fails in Bitbucket pipelines #23957
Datasource initialisation with JPA schema configured in deferred mode happens asynchronously #23933
ConfigurationMetadataAnnotationProcessor can add duplicate entries #23916
Jar entries are duplicated in BOOT-INF/lib with layered jars and Maven #23819
HttpEncodingAutoConfiguration is not added to the WebMvcTest slice #23817
Wildcard locations for configs causes files to be parsed multiple times on k8s #23815
Exception thrown from /actuator/env endpoint when spring.config.import=configtree:xxxx is used #23805
Exceptions when initializing logging system are not shown #23802
excludeProjectDependencies() does not work when customising a jar's layers with Gradle #23763
A reactive web application using Spring Session uses server.servlet.session.timeout to configure its session timeout #23752
server.servlet.session.timeout not in effect when using Jetty starter without jakarta.annotation and javax.annotation #23751
If the JVM is killed while refresh is in progress, the shutdown hook does not close the context #23744
Hang on AbstractEntityManagerFactoryBean.getNativeEntityManagerFactory() #23735
BootJar.getConfigurations() should not be public API #23732
Renaming of CompositeMeterRegistryAutoConfiguration breaks code that was excluding it or referring to it from @AutoConfigureBefore/After #23724
Databases that support embedded and non-embedded modes are always detected as embedded #23693
@MockBean fields are not reset for JUnit 5 @Nested tests #12470

📔 Documentation

Remove version elements from Maven plugin documentation #23931
Polish HTTP/2 Cleartext documentation #23820
Document how to enable h2c via programmatic configuration #23816
Note that using LiveReload requires Devtools restart to be enabled #23765
Fix links to Spring Framework documentation #23737
Maven layers documentation is incomplete #23731
Add reference to JobRunr Spring Boot starter #23725
Polish titles on configblocks #23722
Document how to override attributes already specified in Maven plugin configuration #23718
Block selection in docs only works in single page HTML #23709

🔨 Dependency Upgrades

Upgrade to AssertJ 3.18.0 #23888
Upgrade to Commons Pool2 2.9.0 #23889
Upgrade to Dropwizard Metrics 4.1.14 #23890
Upgrade to Elasticsearch 7.9.3 #23891
Upgrade to Flyway 7.1.1 #23932
Upgrade to Jetty 9.4.33.v20201020 #23893
Upgrade to jOOQ 3.14.0 #23894
Upgrade to Kotlin Coroutines 1.4.0 #23913
Upgrade to Lettuce 6.0.1.RELEASE #23923
Upgrade to Lombok 1.18.16 #23895
Upgrade to Micrometer 1.6.0 #23525
Upgrade to Mockito 3.6.0 #23924
Upgrade to MongoDB 4.1.1 #23897
Upgrade to MSSQL JDBC 8.4.1.jre8 #23742
Upgrade to MySQL 8.0.22 #23898
Upgrade to Netty 4.1.53.Final #23899
Upgrade to Nimbus JOSE JWT 9.1.1 #23901
Upgrade to OAuth2 OIDC SDK 8.23.1 #23900
Upgrade to Oracle Database 19.8.0.0 #23902
Upgrade to Postgresql 42.2.18 #23903
Upgrade to R2DBC Bom Arabba-SR8 #23904
Upgrade to Rabbit AMQP Client 5.10.0 #23905
Upgrade to Reactor 2020.0.0 #23771
Upgrade to RSocket 1.1.0 #23912
Upgrade to SendGrid 4.6.7 #23906
Upgrade to Spring AMQP 2.3.0 #23785
Upgrade to Spring Batch 4.3.0 #23963
Upgrade to Spring Data 2020.0.0 #23778
Upgrade to Spring Framework 5.3.0 #23774
Upgrade to Spring HATEOAS 1.2.0 #23779
Upgrade to Spring Integration 5.4.0 #23781
Upgrade to Spring Session 2020.0.0 #23788

❤️ Contributors

We'd like to thank all the contributors who worked on this release!