Prior to this commit, the resource handling chain and its
`ResourceResolvers` would use specific `Resource` implementations in
order to add resource metadata to the HTTP response. For example,
`VersionedResource` and `EncodedResource` are both adding specific HTTP
response headers.
This commit aims at making this mechanism more stable and reusable,
since the previous implementation would fail in case a resolved resource
would be both a `VersionedResource` wrapping a `EncodedResource` (or the
other way arount). Only one of the specific implementations would
contribute its metadata since the code supporting that in
`ResourceHttpRequestHandler` would only check for `instanceof` tests,
whereas those implementations are acutally delegating calls to
the wrapped resource.
Now both `VersionedResource` and `EncodedResource` have been replaced by
specific implementations of `ResolvedResource`, which directly provides
those HTTP response headers as part of `getResponseHeaders()`.
This commit applies the same changes for the web reactive
implementations and its `ResourceWebHandler`.
Issue: SPR-14264
Since SPR-14522, the web reactive framework supports checkNotModified
features. This commit aligns the existing MVC infrastructure with
web reactive's behavior.
Because of the new Servlet 3.0 baseline, some constraints
aren't relevant anymore and duplicate code has been removed in
`HttpEntityMethodProcessor`.
Issue: SPR-14659
This commit documents the regexp support in `AntPathMatcher` when
matching for URL patterns. This support is also mentioned in places
where developers can register patterns for ViewControllers or resource
handlers.
Issue: SPR-14652
This is a follow-up on commit 3b95e0b relaxing the expectation that a
ServletContext is present. Instead we check defensively and fall back
on PathExtensionContentNegotiationStrategy which can use JAF.
Issue: SPR-14577
This commit adds Smile and CBOR Jackson HttpMessageConverters
and make it possible to create Smile and CBOR ObjectMapper via
Jackson2ObjectMapperBuilder, which now allows to specify any
custom JsonFactory.
Like with JSON and XML Jackson support, the relevant
HttpMessageConverters are automaticially configurered by
Spring MVC WebMvcConfigurationSupport if jackson-dataformat-smile
or jackson-dataformat-cbor dependencies are found in the classpath.
Issue: SPR-14435
HttpEntityMethodProcessor should not throw IllegalArgumentExceptions for
invalid If-None-Match headers.
For those cases, this commit makes sure that both
`HttpEntityMethodProcessor` and `ServletWebRequest` have a consistent
behavior and stop processing the request as conditional and leave the
handler handle it.
Issue: SPR-14559
xmlunit 2.1.0 is the latest release for xmlunit.
Most of the xmlunit functionality used within spring-framework
was done through the xmlunit 1.x helper class
`org.custommonkey.xmlunit.XMLAssert`.
As of xmlunit 2.0.0 most of the XML comparison methods are done
through hamcrest matchers exposed by the xmlunit-matchers
library. In some cases during the migration, the matchers
had to be customized with custom `NodeMatcher` or
`DifferenceEvaluator` instances in order to keep the assertions
correct (they were performed with xmlunit 1.x previously).
Issue: SPR-14043
This commit adds a test runtime dependency on log4j 2 for every project
and migrates all log4j.properties files to log4j2-test.xml files.
Issue: SPR-14431
