Previously, the auto-configuration for both Jersey and WebMvc would auto-configure
a RequestContextFilter bean. In 2.1.0, this led to a startup failure due to the latter
attempting to override the bean defined by the former. In addition to the override there
were also problems with the order of the filter as Jersey uses -1 and MVC uses -105.
To avoid the above-described problems, the auto-configuration of the RequestContextFilter
was removed from JerseyAutoConfiguration in 2.1.1. Unfortunately, the broke
request-scoped beans for those using only Jersey.
This commit attempts to strike a better balance by reintroducing the auto-configuration
of RequestContextFilter in JerseyAutoConfiguration. It will back off if the user defines
their own filter or filter registration. WebMvcAutoConfiguration has been updated to
back off in the same manner. This leaves the potential for ordering problems, but they
are no worse than they were before. Furthermore, the user has the means to correct any
problems by using the various filter ordering properties that are provided for Jersey,
Spring Session, Spring Security, etc.
Closes gh-15376
This commit also ensures that Jersey-based actuator endpoints are
available before the user has configured a `ResourceConfig` bean
Fixes gh-15625
Fixes gh-15877
Prior to this commit, errors unhandled by custom `WebExceptionHandler`
and resulting in an HTTP 500 status would not be logged at ERROR level,
giving no information to developers about the actual exception.
This commit ensures that such exceptions are logged at the ERROR level
with their exception. By the time the exception hits the
`DefaultErrorWebExceptionHandler`, if the response is already committed
or if the exception is due to a client disconnecting, the error is
delegated to Framework support as Spring Boot won't be able to render an
error page as expected.
Fixes gh-15769
Spring Boot provides two separate auto-configurations that can
potentially expose an `AsyncTaskExecutor` implementation so relying on
the presence of a single instance is too weak.
This commit fixes the detection of the AsyncTaskExecutor that can be
used to bootstrap JPA so that a single instance is used and, in the case
more than one exists, the one named `applicationTaskExecutor`.
Closes gh-15447
