Prior to this commit, `WebMvcTags' would always mark as "NOT_FOUND" or
"REDIRECTION" *any* exchange with responses of 404 and 3xx status, even
if those responses are actually returned by Controller handlers.
This commit checks inverts those checks and first considers if the
"BEST_MATCHING_PATTERN_ATTRIBUTE" request attribute is present and uses
it - then falls back to "NOT_FOUND" and "REDIRECTION" to avoid
cardinality explosion.
Fixes gh-12577
Create a new `ApplicationConversionService` similar in design to the
DefaultFormattingConversionService from Spring Framework. The new
conversion service provides a central place for custom conversion logic
supported by Spring Boot.
Also replace the `BindingConversionService` with an internal
`BindConverter` class that now invokes the `SimpleTypeConverter`
directly. Binding for `@ConfigurationProperties` has been updated so
that any custom property editors registered with the BeanFactory can
be used.
Fixes gh-12095
Move leading slash logic from `MetricsClientHttpRequestInterceptor` to
`RestTemplateExchangeTags` so that URI based calls are also managed.
Closes gh-12126
Previously, if a controll endpoint included a mapping with no path,
it would be mapped to the root of the application rather than the
root of the endpoint's path.
This commit updates the handler mappings for both reactive and Servlet
web applications to treat a mapping with no paths as being a mapping
with a single empty path. This ensures that a path with the endpoint's
path prepended is used for the mapping.
Closes gh-12104