This commit defers flushing of the response until the first item is
emitted that needs to be written (and flushed) to the response.
This makes Spring MVC consistent with WebFlux in this regard.
Closes gh-21972
This commit deprecates MediaType.APPLICATION_JSON_UTF8 and
MediaType.APPLICATION_PROBLEM_JSON_UTF8 in favor of
MediaType.APPLICATION_JSON and MediaType.APPLICATION_PROBLEM_JSON since
UTF-8 encoding is now handled correctly by most browsers
(related bug has been fixed in Chrome since September 2017).
MediaType.APPLICATION_JSON is now used as the default JSON content type.
Closes gh-22788
An empty path mapping in an @RequestMapping now consistently matches to
empty paths regardless of whether there are both type and method level,
annotations, or method-level only.
Closes gh-22543
Commit c0b52d09f5 introduced support for
throwing an exception if a @RequestMapping handler method in a Spring
MVC controller was mapped to an empty path. This had negative side
effects for applications that intentionally mapped to an empty path,
potentially alongside a mapping to an explicit path for the same
handler method.
This commit addresses this by logging a warning (instead of throwing an
exception) if a @RequestMapping method is mapped only to empty paths.
This commit also introduces the same support for WebFlux-based
@RequestMapping handler methods.
Closes gh-22543
Prior to this commit, handler methods in Spring MVC controllers were
not required to provide explicit path mappings via @RequestMapping (or
any of its specializations such as @GetMapping). Such handler methods
were effectively mapped to all paths. Consequently, developers may have
unwittingly mapped all requests to a single handler method.
This commit addresses this by enforcing that @RequestMapping methods
are mapped to an explicit path. Note, however, that this is enforced
after type-level and method-level @RequestMapping information has been
merged.
Developers wishing to map to all paths should now add an explicit path
mapping to "/**" or "**".
Closes gh-22543
This commit changes the main configuration classes for Spring MVC and
Spring WebFlux to not call other bean methods when setting up the web
infrastructure. This allows configuration classes extending
`DelegatingWebFluxConfiguration` and `DelegatingWebMvcConfiguration`
to opt-in the lite-mode, as introduced in gh-22461.
