This commit restructures the Cache auto-configuration to avoid an early
init on CacheManager (and potentially all its infrastructure). Rather
than adding a dependency on the validator bean, this commit relies on
the fact CacheAspectSupport checks if a CacheManager is available in the
afterSingletonsInstantiated callback. In this case, a simple bean with
a postconstruct callback is enough.
Closes gh-13038
Previously, the error page filter used sendError to set the response
status when handling an exception and before forwarding the request
to the error controller. Following the fix for gh-11814, this meant
that the error controller was unable to write its response and the
containers default error page was returned instead.
This commit updates the error page filter to use setStatus rather than
sendError. This ensures that the response has the correct status code
while allowing the error controller to write its body. Tests have
been added to the Tomcat deployment test suite to verify that the
error page filter behaves as intended when dealing with a sent error
and an exception for requests accepting HTML, JSON, or anything.
Closes gh-12787
Previously, ErrorPageFilter's ErrorResponseWrapper would delaying
sending an error back to the client. In cases where the response's
Writer or OutputStream was accessed and flushed or closed, this could
lead to the wrong response status being sent.
This commit updates ErrorResponseWrapper so that it will send any
capture error to the client before returning the response's Writer or
OutputStream. This ensures that closing the Writer or OutputStream
does not cause the response to be committed with the default response
status rather than the previously captured error status.
Such responses will now include the correct status, but will not be
forwarded to the error controller. Such forwarding is not possible
due to the response already having been committed.
Closes gh-11814
Stephane Nicoll
Andy Wilkinson
Phillip Webb
Spring Buildmaster