xmlunit 2.1.0 is the latest release for xmlunit.
Most of the xmlunit functionality used within spring-framework
was done through the xmlunit 1.x helper class
`org.custommonkey.xmlunit.XMLAssert`.
As of xmlunit 2.0.0 most of the XML comparison methods are done
through hamcrest matchers exposed by the xmlunit-matchers
library. In some cases during the migration, the matchers
had to be customized with custom `NodeMatcher` or
`DifferenceEvaluator` instances in order to keep the assertions
correct (they were performed with xmlunit 1.x previously).
Issue: SPR-14043
This commit changes the reactive flushing mechanism to use a newly
introduced writeAndFlushWith(Publisher<Publisher<DataBuffer>>) on
ReactiveHttpOutputMessage instead of using the FlushingDataBuffer.
Issue: https://github.com/spring-projects/spring-reactive/issues/125
The `WebClient` has a new exception hierarchy:
* `WebClientException` is the root of all exceptions thrown by the
`WebClient`
* `WebClientResponseException` are all exceptions associated with
specific HTTP response status codes
* `WebClientErrorException` and `WebServerErrorException` are
respectively for 4xx and 5xx HTTP status codes
`ResponseExtractor` implementations are adapted to optionally throw
exceptions if it's impossible to extract the relevant parts of the
response (e.g. extracting the response body if the response is a 404).
This commit also introduces `ResponseErrorHandler`s that take care of
the whole exception mapping infrastructure. Since
`WebClientResponseException`s provide the status, headers and response
body, we also need a dedicated mechanism to extract information from the
response body at that level.
The `BodyExtractors` are responsible for extracting that information
from the exception, given they are provided with all the information
they need; in that case, message decoders are required.
To convey all this new information downstream, the `WebClient` now wraps
the message converters and response error handler instances into a
dedicated `WebClientConfig` object.
This commit also removes the corresponding deprecated Servlet MVC variant and updates DispatcherServlet.properties to point to RequestMappingHandlerMapping/Adapter by default.
Issue: SPR-14129
This commit adds a `ClientHttpRequestInterceptor` that applies a BASIC
authorization header for each request.
It can be used as follows:
```
BasicAuthorizationInterceptor basicAuthorization =
new BasicAuthorizationInterceptor("user", "secret");
restTemplate.getInterceptors().add(basicAuthorization);
```
Issue: SPR-14412
Prior to this commit, setting the `forceEncoding` option would force
encoding on both requests and responses.
This commit adds two new setters and a new constructor to differentiate
both options: forcing the encoding on the request and/or on the
response.
You can now define this filter programmatically using those options or
update your servlet XML configuration like:
```
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>o.sf.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>false</param-value>
</init-param>
</filter>
```
Issue: SPR-14240
Prior to this commit, the `ResourceHttpMessageConverter` would support
all HTTP Range requests and `MethodProcessors` would "wrap" controller
handler return values with a `HttpRangeResource` to support that use
case in Controllers.
This commit refactors that support in several ways:
* a new ResourceRegion class has been introduced
* a new, separate, ResourceRegionHttpMessageConverter handles the HTTP
range use cases when serving static resources with the
ResourceHttpRequestHandler
* the support of HTTP range requests on Controller handlers has been
removed until a better solution is found
Issue: SPR-14221, SPR-13834
This commit makes sure that HTTP request headers containing ETag values
are properly parsed and not simply tokenized using a "," separator.
Indeed, ETags can legally contain separator characters such as " " and
",".
Issue: SPR-14216
Prior to this change, getting header values with `HttpHeaders` when
headers are multi-valued would cause issues.
For example, for a given HTTP message with headers:
Cache-Control: public, s-maxage=50
Cache-Control: max-age=42
Getting a `List` of all values would return <"public", "s-maxage=50">
and getting the header value would return "public, s-maxage=50".
This commit takes now into account multi-valued HTTP headers and adds
new getters/setters for "If-Match" and "If-Unmodified-Since" headers.
Note that for ETag-related headers such as "If-Match" and
"If-None-Match", a special parser has been implemented since ETag values
can contain separator characters.
Issue: SPR-14223, SPR-14228
Prior to this change, setting both "If-None-Match" and
"If-Unmodified-Since" conditional request headers would check for both
conditions to be met.
This commit fixes this behavior to follow the RFC7232 Section 6:
> entity tags are presumed to be more accurate than date validators
So in case both conditions are present, the "If-None-Match" condition
takes precedence.
Issue: SPR-14224
OkHttp3 introduces a new package and API that is incompatible with
previous versions. This commit adds a new
OkHttp3ClientHttpRequestFactory and supporting classes.
