Prior to this commit, there was no explicit support for arrays,
collections, and maps in nullSafeConciseToString(). This lead to string
representations such as the following, regardless of whether the array,
collection, or map was empty.
- char[]@1623b78d
- java.util.ImmutableCollections$List12@74fe5c40
- java.util.ImmutableCollections$MapN@10e31a9a
This commit introduces explicit support for arrays, collections, and
maps in nullSafeConciseToString(), which results in the following
empty/non-empty string representations.
- array: {} / {...}
- collection: [] / [...]
- map: {} / {...}
The reason a string representation of an array uses "{}" instead of
"[]" (like in Arrays.toString(...)) is that
ObjectUtils.nullSafeToString(<array>) already follows that convention,
and the implementation of nullSafeConciseToString() aligns with that
for the sake of consistency.
Closes gh-30810
As a consequence, the spring-messaging HandlerMethod detects interface parameter annotations as well, and the same is available for other HandlerMethod variants.
Closes gh-30801
This commit extends the list of explicitly supported types in
ObjectUtils.nullSafeConciseToString() with the following.
- Optional
- File
- Path
- InetAddress
- Charset
- Currency
- TimeZone
- ZoneId
- Pattern
Closes gh-30805
This commit adds support for WildcardType bounds resolution,
commonly seen in Kotlin due to declaration-site variance,
but also possible in Java even if less common.
Closes gh-22313
This commit adds support for Kotlin parameter default values
in handler methods. It allows to write:
@RequestParam value: String = "default"
as an alternative to:
@RequestParam(defaultValue = "default") value: String
Both Spring MVC and WebFlux are supported, including on
suspending functions.
Closes gh-21139
This commit changes the Java system property used to
control PreComputeFieldFeature verbose logging from
spring.aot.precompute to spring.native.precompute.log
in order to clarify its purpose and avoid confusion
with AOT processing of JVM bytecode or Java sources.
See gh-30571
Juergen Hoeller