spring-projects/spring-boot v2.3.4.RELEASE on GitHub

🪲 Bug Fixes

@ManagementContextConfiguration is meta-annotated with @Configuration(proxyBeanMethods=false) which does not disable proxying #23305
Signed jar dependency performance problem when repackaged in a single jar #23264
ValidationHandler no longer works with certain map keys #23260
MVC error model unnecessarily requires timestamp entry to be a java.util.Date #23258
Missing sanitization in lists of URIs properties on actuator endpoints #23252
Cassandra's pool duration mapping uses a wrong duration unit #23249
When using HSQLDB, Hikari logs a warning message about the driver class name when the first connection is retrieved from the pool #23203
ErrorPageFilter is no longer ordered at HIGHEST_PRECEDENCE + 1 #23200
spring-boot-dependencies should not define a spring-boot.version property #23174
PropertiesLauncher fails to load PBKDF-OpenSSL of bcprov-jdk15on-1.64.jar #23165
Configurable SSL Logback extensions can't be supported due to URL checks #23135
Image building support does not zero-pad digest hashes to 64 characters #23132
Image builder fails silently when there's an error loading the ephemeral image #23130
Large files can throw YAMLException due to node limits #23096
RSocketPortInfoApplicationContextInitializer can throw NPE #23087
UndertowWebServerFactoryCustomizer requires commons lang via an unintended import on ClassUtils #23063
JarFile can cause memory issues when running on Java 11+ #22998
Dependency convergence error for nimbus-jose-jwt when depending on spring-boot-starter-oauth2-client #22996
LayoutFactory can be presented with empty source file #22995
Metrics auto-configurations are not ordered correctly #22989
The @TypeExcludeFilters annotation is not @Inherited #22966
Exception inclusion cannot be disabled when sub-classing DefaultErrorAttributes and using its deprecated constructor #22750
Too much logging when building an OCI image with Maven #22674

📔 Documentation

Document that @ConfigurationProperties beans are not scanned in sliced tests #23243
Fix documentation on Elasticsearch client configuration #23074
Provide examples of Actuator custom endpoints in the reference documentation #23060
Mention correct JUnit 5 annotations in Kotlin testing section #23004
Document that extracting layers with layertools doesn't work with executable JAR files #22993
Javadoc inaccuracy in SpringApplicationBuilder.properties(Properties) #22964
Fix typo Assert4J -> AssertJ #22960
Document that graceful shutdown may not work from IDEs #22959
Fix typos in docs #22945
Fix Gradle Plugin custom image name example and documentation #22918
Document how to use spring.factories to add auto-configuration to a test slice #22531
Update Maven Plugin's documentation to note the importance of configuring start and stop goals with the same JMX port #22401
Document how to perform tasks after application startup #22100
Document setting buildpack Java version from compiler plugin version #21796
Document that buildpacks use non-root users for building container images and running containers #21122

🔨 Dependency Upgrades

Upgrade to Micrometer 1.5.5 #23393
Upgrade to Spring REST Docs 2.0.5.RELEASE #23376
Upgrade to Spring AMQP 2.2.11 #23373
Upgrade to Spring WS 3.0.10.RELEASE #23339
Upgrade to Spring HATEOAS 1.1.2.RELEASE #23338
Upgrade to Lettuce 5.3.4.RELEASE #23337
Upgrade to Undertow 2.1.4.Final #23318
Upgrade to Tomcat 9.0.38 #23317
Upgrade to R2DBC Bom Arabba-SR7 #23316
Upgrade to Postgresql 42.2.16 #23315
Upgrade to Netty tcNative 2.0.34.Final #23314
Upgrade to Netty 4.1.52.Final #23313
Upgrade to Neo4j OGM 3.2.16 #23312
Upgrade to Hibernate 5.4.21.Final #23311
Upgrade to Hazelcast 3.12.9 #23310
Upgrade to Flatten Maven Plugin 1.2.5 #23309
Upgrade to Couchbase Client 3.0.8 #23308
Upgrade to AppEngine SDK 1.9.82 #23307
Upgrade to Spring Kafka 2.5.6 #23199
Upgrade to Spring Data Neumann-SR4 #23196
Upgrade to Reactor Dysprosium-SR12 #23192
Upgrade to Spring Session Dragonfruit-SR1 #23187
Upgrade to Spring Framework 5.2.9 #23183

❤️ Contributors

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