Prior to this commit, Spring MVC and Spring WebFlux would not support
conditional requests with `If-Match` preconditions. As underlined in the
RFC9110 Section 13.1, those are related to the `If-None-Match`
conditions, but this time only performing requests if the resource
matches the given ETag.
This feature, and in general the `"*"` request Etag, are generally
useful to prevent "lost updates" when performing a POST/PUT request: we
want to ensure that we're updating a version with a known version or
create a new resource only if it doesn't exist already.
This commit adds `If-Match` conditional requests support and ensures
that both `If-Match` and `If-None-Match` work well with `"*"` request
ETags.
We can't rely on `checkNotModified(null)`, as the compiler can't decide
between method variants accepting an ETag `String` or a Last Modified
`long`. Instead, developers should use empty ETags `""` to signal that
no resource is known on the server side.
Closes gh-24881
Includes deprecation of NestedServletException, whereas NestedCheckedException and NestedRuntimeException remain as base classes with several convenience methods.
Closes gh-25162
Support reflection-based serialization of parameters annotated
with @RequestBody and return values annotated with @ResponseBody.
It leverages a new BindingReflectionHintsRegistrar class that
is designed to register transitively the types usually needed
for binding and reflection-based serialization on fields,
constructors and properties. Generics are taken in account
as well.
Closes gh-28518
Prior to this commit, getPort() in HierarchicalUriComponents threw a
NumberFormatException for an invalid port supplied as a String, which
was inconsistent with exception handling elsewhere in the class as well
as within the same method.
This commit introduces a try-catch block in getPort() to consistently
throw IllegalStateExceptions for ports that cannot be parsed.
Closes gh-28521
Prior to this commit, a ClassCastException was thrown for an Optional
return type for an @HttpExchange method. This is because the check for
an Optional return type was based on the type contained in the Optional
instead of the Optional itself.
Closes gh-28493
This commit polishes the contribution for support of multiple
base64 segments, and adds supports for multiple quoted printable
segments in Content-Disposition.
Closes gh-28236
This commit removes the dependency that the spring-web module has on
Jakarta Mail.
In FormHttpMessageConverter, a dependency on
jakarta.mail.internet.MimeUtility was replaced by existing encoding
logic in ContentDisposition.
In StandardMultipartHttpServletRequest, a dependency on the same
MimeUtility was replaced by new quoted-printable decoding logic in
ContentDisposition.
Closes gh-28392
This commit introduces the PartEvent API. PartEvents are either
- FormPartEvents, representing a form field, or
- FilePartEvents, representing a file upload.
The PartEventHttpMessageReader is a HttpMessageReader that splits
multipart data into a stream of PartEvents. Form fields generate one
FormPartEvent; file uploads produce at least one FilePartEvent. The last
element that makes up a particular part will have isLast set to true.
The PartEventHttpMessageWriter is a HttpMessageWriter that writes a
Publisher<PartEvent> to a outgoing HTTP message. This writer is
particularly useful for relaying a multipart request on the server.
Closes gh-28006
