spring-projects/spring-framework v6.0.0-M1 on GitHub

⭐ New Features

Deprecate CachingConfigurerSupport and AsyncConfigurerSupport #27813
Deprecate StringUtils::trimWhitespace #27769
Enforce Future or void return declaration for each asynchronously executed method (e.g. with class-level @Async) #27734
Avoid unescape when CONNECT and CONNECTED frames #27722
Support SQUARE brackets [] around NAMED parameter #27716
Change StringUtils trimWhitespace to String.strip() #27703
Retrieve MethodMetadata for all user-declared methods in the order of declaration #27701
Refactor HttpMethod from enum to class #27697
Use parseInt without substring method #27680
Consistently replace String encoding names with StandardCharset arguments #27664
Use 'toString(Charset)' instead of 'toString(String)' for encodings #27646
Add method to ClientResponse that returns Mono terminating with createException #27637
Create immutable MultiValueMap wrapper #27608
Revisit MediaType ordering #27580
Optimize header removal in ForwardedHeaderFilter #27466
Change default driver in XStreamMarshaller from XppDriver to DomDriver #27464
Retain support for legacy JSR-250 javax.annotation.PostConstruct/PreDestroy and JSR-330 javax.inject.Inject in addition to Jakarta EE 9 annotations #27444
change string http header to enum #27356
Allow BeanUtils#instantiateClass inlining with native #27072
Remove support for deprecated Java SecurityManager #26901
CommonAnnotationBeanPostProcessor jakarta.annotation-api:2.0.0 support (@PostConstruct/Predestroy) #26185
@Transactional does not work on package protected methods of CGLib proxies #25582
Add support for explicit generic type in PayloadApplicationEvent #24599
Add Kotlin extensions for Cache and CacheManager #23927
JDK 11 HttpClient integration with WebClient #23432
@RequestMapping without @Controller registered as handler [SPR-17622] #22154
Upgrade Spring Context Support to Jakarta EE's com.sun.mail:jakarta.mail and com.sun.activation:jakarta.activation [SPR-17561] #22093
Enable support for custom vnd types in messaging MappingJackson2MessageConverter [SPR-15712] #20269
Add support for instant in @DateTimeFormat #19846
Support YearMonth and MonthDay with the @DateTimeFormat annotation #1215

📔 Documentation

Update javadoc and reference docs for consistent version and package references to the Jakarta EE 9 APIs #27689
Use default stylesheet for generated Javadoc HTML #27496

🔨 Dependency Upgrades

Support for Jakarta EE 9 (annotations and interfaces in jakarta.* namespace) #25354
Support for Jetty 11 #27424
Upgrade to AspectJ 1.9.8 for official Java 17 support #27537
Upgrade to Kotlin 1.6.10 #27413

❤️ Contributors

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