Release v2.4.0 · spring-projects/spring-boot

⭐ New Features

Provide a property or environment variable to enable DevTools' restarter irrespective of how the application was launched #21424

Using last modified for static resources in reproducible archives and images causes unwanted browser caching #24099
BootJar's afterResolve action causes resolution failures with the Versions plugin due to configurations being copied and made resolvable #24072
Configuration metadata annotation processor may use the wrong accessor for boolean properties #24059
When using Tomcat, key and trust store passwords set via javax.net.ssl system properties are overwritten with null when Spring Boot's equivalent properties have not been set #24053
Config files no longer loaded if they contain a hidden path element #24043
@DataJpaTest using H2 with schema.sql and spring.datasource.schema-username fails #24024
"java.lang.IllegalStateException: zip file closed" when call JarFileWrapper.stream() of spring-boot-loader #24017
JdbcStoreTypeConfiguration picks transaction of primary data source when Quartz data source is not the primary data source #24015
TestTypeExcludeFilter does not implement hashCode and equals as required by its super-class #24013
Our auto-configuration should not use @PostConstruct as it's ignored on Java 11+ without a dependency on jakarta-annotation-api #24010
@MockBean fields are not reset for JUnit 5 @Nested tests using @WebMvcTest #23984
ClasspathLoggingApplicationListener logs the classpath as unknown on Java 11 and later #23138

Fix link to Flyway callback docs #24122
Fix deprecation warnings in javadoc comments #24120
Provide more details about overriding SpringPhysicalNamingStrategy's case insensitive flag #24062
Clarify documentation regarding relaxed binding of environment variables #24033
Enhance spring.datasource.initialization-mode property description #24030
Recommend disabling context path redirects when using proxy-terminated SSL with Tomcat #24026
Improve Spring Session back off documentation #24019
Clarify the javadoc of AutoConfigureTestDatabase to make it clearer that it only replaces the main DataSource #24007
Recommend that bean definitions provide as much type information as possible #24005
logging.file.* properties flagged with error level while they are still honoured #23995
Add missing default value for enum-based configuration properties #23992
Configuration property replacement metadata for spring.resources.cache.cachecontrol.stale-while-revalidate is invalid #23980

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