This commit adds integration tests and reference documentation
for multipart support in `RestClient` and `RestTestClient`.
Closes gh-35569
Closes gh-33263
Prior to this commit, gh-36255 introduced the new
`MultipartHttpMessageConverter`, focusing on multipart message
conversion in a separate converter. The `FormHttpMessageConverter` did
conflate URL encoded forms and multipart messages in the same converter.
With the introduction of the new converter and related types in the same
package (with `Part`, `FormFieldPart` and `FilePart`), we can now
revisit this arrangement.
This commit restricts the `FormHttpMessageConverter` to URL encoded
forms only and as a result, changes its implementation to only consider
`MultiValueMap<String, String>` types for reading and writing HTTP
messages. Because type erasure, this converter is now a
`SmartHttpMessageConverter` to get better type information with
`ResolvableType`.
As a result, the `AllEncompassingFormHttpMessageConverter` is formally
deprecated and replaced by the `MultipartHttpMessageConverter`, by
setting part converters explicitly in its constructor.
Closes gh-36256
This commit improve the reference documentation in order to:
* highlight the deprecation status of `RestTemplate`
* improve the migration guide for `RestClient`, better explaining
possible behavior differences and a migration strategy.
Closes gh-35620
As of Spring Framework 6.2, the `RestClient.retrieve()` method is a
no-op and developers must invoke a terminal operation on the returned
`ResponseSpec` to have any side effect.
This has been documented in the Javadoc and the wiki release notes, but
this commit highlights this as well in the reference documentation.
Closes gh-34334
This commit adds a reference documentation section explaining how
applications can use custom `HttpServiceArgumentResolver`
implementations to support complex application types as method
parameters in HTTP interfaces.
Closes gh-34227
Since we now use asciidoctor-tabs instead of spring-asciidoctor-backends,
we no longer need the `role="primary"` and `role="secondary"` attributes
for tab groups.
Closes gh-33506
On the client side, supports `name=value` pairs. Placeholders in values
are resolved by the `embeddedValueResolver`.
On the server side, additionally supports `name` and `!name` syntax.
Closes gh-33309
For consistency with other examples, this commit omits `method` parameter
names in the "Migrating from RestTemplate to RestClient" section of the
reference docs.
Closes gh-32335
This commit extract spring-related links and recurring external links
into asciidoctor attributes to be used by the Antora toolchain.
It notably homogenizes links to:
- IETF RFCs
- Java Community Process JSRs
- the Java API Documentation (on the Java 17 version)
- Kotlin documentations (on the Kotlinlang.org version)
- the Spring Boot reference guide (on the `html` version)
This commit also reworks most link attributes to follow a
Project-Category-Misc syntax. For example, `spring-boot-docs` rather
than `docs-spring-boot`.
Finally, it makes an effort to clean up remainders from the previous
documentation toolchain, namely the `docs/asciidoc` folder and
`modules/ROOT/pages/attributes.adoc` file.
Closes gh-26864
Closes gh-31619