Prior to this commit, no `ResourceUrlProvider` was configured
in WebFlux (no bean was contributed by the WebFlux infrastructure).
Also, several `ResourceTransformer` instances that extend the
`ResourceTransformerSupport` base class need a `ResourceUrlProvider`
to resolve absolute URLs when rewriting resource URLs. At this point,
no `ResourceUrlProvider` was configured and they could only resolve
relative URLs.
This commit contributes a new `ResourceUrlProvider` to the WebFlux
configuration; this bean can be reused by the WebFlux infrastructure and
application code.
This also automatically configure this shared `ResourceUrlProvider`
instance on the resource chain where needed.
Issue: SPR-17433
(Cherry-picked from fc957e95bb)
Prior to this commit, `ResourceTransformerSupport.toAbsolutePath`
would call `StringUtils.applyRelativePath` in all cases. But this
implementation is prepending the given path even if the relative path
starts with `"/"`.
This commit skips the entire operation if the given path is absolute,
i.e. it starts with `"/"`.
Issue: SPR-17432
(Cherry-picked from 2146e13787)
Review and update Servlet and Undertow adapters to release any data
buffers they be holding on to at the time of error or cancellation.
Also remove onDiscard hooks from Reactor and Undertow request body.
For Reactor we expect it to be handled. For Undertow there isn't
any Reactor Core upstream for the callback to be useful.
Issue: SPR-17410
Empty Maps are preferably initialized without capacity (not initializing them at all or lazily initializing with default capacity when needed).
Issue: SPR-17105
(cherry picked from commit 4a147d26fc)
Prior to this commit, controller handlers (regular and exception
handlers as well) would not overwrite existing HTTP response headers on
the exchange. This would lead to situations where Content-Type values
set during the initial handling phase would not be overwritten when
handling an error later on.
This commit aligns the implementation of that result handler on the
Spring MVC one in that regard.
Issue: SPR-17082
(Cherry-picked from 195f3f07e7)
Prior to this commit, resolving an argument for a WebFlux controller
that's missing from the request and not required by the handler would
throw a NullPointerException in some cases.
This involves the conversion of the parameter (a `String` parameter type
might not trigger this behavior) and sending a `null` within a reactive
stream, which is illegal per the RS spec.
We now rely on a `Mono.justOrEmpty()` to handle those specific cases.
Issue: SPR-17050
(Cherry-picked from a7f97a1669)
In SPR-16892, the `EncoderHttpMessageWriter` has been improved to write
`"Content-Length"` HTTP response headers if the response body is of type
`Mono` (i.e. the actual content length is easily accessible without
buffering a possibly large response body). That change was relying on
the fact that the server side is using a `ChannelSendOperator` to delay
the writing of the body until the first signal is received.
This strategy is not effective on the client side, since no such channel
operator is used for `WebClient`. This commit improves
`EncoderHttpMessageWriter` and delays, for `Mono` HTTP message bodies
only, the writing of the body so that we can write the
`"Content-Length"` header information once we've got the body resolved.
Issue: SPR-16949
(Cherry-picked from 4a26f93a0d)
This commit fix an issue where path variables in a nested parent
RouterFunction were not committed to the request attributes.
Issue: SPR-16868
(cherry picked from commit 8c30b8e)
Juergen Hoeller
Rossen Stoyanchev
Brian Clozel
dmrachkovskyi
Napster
Arjen Poutsma