Spring Framework 5.3.3 releases

Spring Framework 5.3.3 releases

The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications – on any kind of deployment platform.

A key element of Spring is infrastructural support at the application level: Spring focuses on the “plumbing” of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.Spring Framework



  • Core technologies: dependency injection, events, resources, i18n, validation, data binding, type conversion, SpEL, AOP.
  • Testing: mock objects, TestContext framework, Spring MVC Test, WebTestClient.
  • Data Access: transactions, DAO support, JDBC, ORM, Marshalling XML.
  • Spring MVC and Spring WebFlux web frameworks.
  • Integration: remoting, JMS, JCA, JMX, email, tasks, scheduling, cache.
  • Languages: Kotlin, Groovy, dynamic languages.



⭐ New Features

  • Add null check for ExceptionHandlerMethodResolvers #26339
  • ClassNotFoundException: ExchangeFunction when using WebTestClient with Spring MVC #26308
  • Early support for JDK 17 #26307
  • Assertion error details lost in rethrow in assertWithDiagnostics #26303
  • Update ReactiveAdapterRegistry to do classpath checks at class initialization #26295
  • Problem with @Schedule with Quartz features in CronExpression #26289
  • Make use of abortOnRequest in Jetty Reactive HttpClient #26287
  • Update OncePerRequestFilter.isAsyncDispatch to use HttpServletRequest.getDispatcherType() #26282
  • Introduce computeAttribute() in AttributeAccessor #26281
  • Translate PostgreSQL code 21000 (cardinality_violation) #26276
  • Consistent type resolution handling for NullBean #26271
  • Defensively handle loadClass null result in BeanUtils.findEditorByConvention (against misbehaving ClassLoader impl such as in the GWT JettyLauncher) #26252
  • Subscriber context not propagated to WebSocketHandler for Tomcat websockets #26210
  • Introduce ApplicationEvents abstraction to capture application events published during a test #25616
  • Spring AOP should not apply UndeclaredThrowableException to checked exceptions from Kotlin methods #23844

🐞 Bug Fixes

  • Cannot remove headers from httpHeaders.keySet() in WebFlux #26361
  • ClassCastException handling at SimpleApplicationEventMulticaster of payload items #26349
  • DefaultPartHttpMessageReader creates live resources that won’t be shut down #26347
  • Sending empty Flux to RSocket channel causes DecodingException: JSON decoding error: No content to map due to end-of-input #26344
  • Fix implementation of isOpen() in ReactorNettyWebSocketSession #26341
  • Remove obsolete commandName attribute in spring-form.tld #26337
  • The response has a duplicate “Content-Length” header when get by range header #26330
  • @ExceptionHandler methods not invokable if matched on exception’s cause level > 1 #26317
  • Switch to PathPatternParser for Spring MVC breaks welcome page auto configuration #26318
  • CronExpression cannot parse combination of step values #26313
  • Fix JdbcOperations.queryForObject/queryForList extensions #26312
  • ClassCastException during websocket upgrade for mutated request #26304
  • kotlinx.serialization should not be used for Java interfaces implemented by Java classes #26298
  • NettyHeadersAdapter.add() accepts @Nullable value but throws NullPointerException #26274
  • Lots of boundedElastic-evictor TIMED_WAITING threads related to form data requests #26263
  • No originalFilename in MockMultipartFile now leads to add it just as part #26261
  • UriComponentsBuilder fromUriString cannot parse File URI #26258

📔 Documentation

  • Slow prototype bean creation when migrating spring-boot 2.3.5 -> 2.4.1 #26369
  • Application built against Spring Framework 5.3 breaks deployment to Wildfly 9 #26355
  • Improve MockMvc samples in reference to show where static imports come from #26311
  • MultipartFile.getOriginalFilename() documentation should warn user not to use it as destination file name #26299
  • Spring data DomainClassConverter broken with Spring 5.3 in case of missing entity #26296
  • Document initialization and shutdown logging semantics for the TestContext framework #25385

🔨 Dependency Upgrades

  • Upgrade to Reactor 2020.0.3 #26367
  • Upgrade to Hibernate Validator 6.2 #26255