Previously, BasicErrorController would return the response status
set in the javax.servlet.error.status_code request attribute when
serving JSON but would also return a 200 OK response when serving
HTML. This didn’t cause much trouble when a person was browsing, but
proved problematic for machine clients that request text/html and care
about the response status. For example, the success handler would be
driven for an XHR request even though the response was really an error.
This commit updates BasicErrorController to set the response status for
text/html responses to match the status that it would use in an
application/json response.
Closes gh-4694
Given that Spring Boot uses java config accross the board, a new `value`
attribute is now aliased to the existing `classes` attribute such that
one could write the following:
@SpringApplicationConfiguration(MyConfig.class)
public class MyTest {}
Closes gh-3635
Rename `VanillaHealthIndicator` to `ApplicationHealthIndicator` and
changed the exposed bean name from `statusHealthIndicator` to
`applicationHealthIndicator`.
This provides less confusing JSON output:
{"status":"UP","application":{"status":"UP"}}
vs:
{"status":"UP","status":{"status":"UP"}}
Fixes gh-1291
With this commit the state of a component or subsystem becomes a first-class citizen in Boot's application health support. HealthIndicators now return a Health instance with status and some contextual details.
An aggregation strategy has been introduced to aggregate several Health instances into one final application Health instance. Out of the box OrderedHealthAggregator can be configured to allow different ordering or a custom HealthAggregator bean can be registered.
