While HandlerMethod instances are cached for lookup purposes, a new
ServletInvocableHandlerMethod instance has to be created prior to each
invocation since handlers may have non-singleton scope semantics.
This change reduces the overhead of creating per request instances
by using a logger with a fixed name rather than relying on getClass()
and also by copying introspected method parameters from the cached
HandlerMethod instance.
Issue: SPR-9747, SPR-9748
This change fixes a cyclical package dependency.
The change also improves the implementation of
WebAsyncManager.hasConcurrentResult() following the resolution of
Apache issue id=53632 and the release of Apache Tomcat 7.0.30 that
contains the fix.
This commit avoids eager creation of Environment instances, favoring
delegation of already existing Environment objects where possible. For
example, FrameworkServlet creates an ApplicationContext; both require
a StandardServletEnvironment instance, and prior to this change, two
instances were created where one would suffice - indeed these two
instances may reasonably be expected to be the same. Now, the
FrameworkServlet defers creation of its Environment, allowing users to
supply a custom instance via its #setEnvironment method (e.g. within a
WebApplicationInitializer); the FrameworkServlet then takes care to
delegate that instance to the ApplicationContext created
in #createWebApplicationContext.
This behavior produces more consistent behavior with regard to
delegation of the environment, saves unnecessary cycles by avoiding
needless instantiation and calls to methods like
StandardServletEnvironment#initPropertySources and leads to better
logging output, as the user sees only one Environment created and
initialized when working with the FrameworkServlet/DispatcherServlet.
This commit also mirrors these changes across the corresponding
Portlet* classes.
Issue: SPR-9763
A new @MatrixVariable annotation allows injecting matrix variables
into @RequestMapping methods. The matrix variables may appear in any
path segment and should be wrapped in a URI template for request
mapping purposes to ensure request matching is not affected by the
order or the presence/absence of such variables. The @MatrixVariable
annotation has an optional "pathVar" attribute that can be used to
refer to the URI template where a matrix variable is located.
Previously, ";" (semicolon) delimited content was removed from the
path used for request mapping purposes. To preserve backwards
compatibility that continues to be the case (except for the MVC
namespace and Java config) and may be changed by setting the
"removeSemicolonContent" property of RequestMappingHandlerMapping to
"false". Applications using the MVC namespace and Java config do not
need to do anything further to extract and use matrix variables.
Issue: SPR-5499, SPR-7818
Rename ExceptionHandlerSupport to ResponseEntityExceptionHandler and
emphasize the contrast to DefaultHandlerExceptionResovler -- i.e.
one returns a ResponseEntity and relies on message converters while
the other returns a ModelAndView and relies on view resolution.
Issue: SPR-9290
This change makes it possible to declare an @RequestBody argument with
a generic type (e.g. List<Foo>). If a GenericHttpMessageConverter
implementation supports the method argument, then the request will be
converted to the apropiate target type.
The new GenericHttpMessageConverter is implemented by the
MappingJacksonHttpMessageConverter and also by a new
Jaxb2CollectionHttpMessageConverter that can read read a generic
Collection where the generic type is a JAXB type annotated with
@XmlRootElement or @XmlType.
Issue: SPR-9570
This change makes it possible to use the RestTemplate to read an HTTP
response into a target generic type object. The RestTemplate has three
new exchange(...) methods that accept ParameterizedTypeReference -- a
new class that enables capturing and passing generic type info.
See the Javadoc of the three new methods in RestOperations for a
short example.
To support this feature, the HttpMessageConverter is now extended by
GenericHttpMessageConverter, which adds a method for reading an
HttpInputMessage to a specific generic type. The new interface
is implemented by the MappingJacksonHttpMessageConverter and also by a
new Jaxb2CollectionHttpMessageConverter that can read read a generic
Collection where the generic type is a JAXB type annotated with
@XmlRootElement or @XmlType.
Issue: SPR-7023
An @RequestBody or an @RequestPart argument can now be followed by an
Errors/BindingResult argument making it possible to handle validation
errors (as a result of an @Valid annotation) locally within the
@RequestMapping method.
Issue: SPR-7114
Methods returning DeferredResult can now specify a timeout value
through constructor arg while methods returning a Callable can wrap it
in an AsyncTask that also accepts a timeout and a specific task
executor.
Issue: SPR-9399
DeferredResult now has a setErrorResult method that can be set to an
Exception or an error object, error view, etc.
The new isSetOrExpired() method can be used to check pro-actively if
the DeferredResult is still usable or not.
The setDeferredResultHandler method is now public so tests may use it.
Issue: SPR-9690, SPR-9689
Classes with this annotation can contain @ExceptionHandler,
@InitBinder, and @ModelAttribute methods that apply to all controllers.
The new annotation is also a component annotation allowing
implementations to be discovered through component scanning.
Issue: SPR-9112
As a result of the refactoring, the AsyncContext dispatch mechanism is
used much more centrally. Effectively every asynchronously processed
request involves one initial (container) thread, a second thread to
produce the handler return value asynchronously, and a third thread
as a result of a dispatch back to the container to resume processing
of the asynchronous resuilt.
Other updates include the addition of a MockAsyncContext and support
of related request method in the test packages of spring-web and
spring-webmvc. Also an upgrade of a Jetty test dependency required
to make tests pass.
Issue: SPR-9433
Currently the getNamedDispatcher(String) method of MockServletContext
always returns null. This poses a problem in certain testing scenarios
since one would always expect at least a default Servlet to be present.
This is specifically important for web application tests that involve
the DefaultServletHttpRequestHandler which attempts to forward to the
default Servlet after retrieving it by name. Furthermore, there is no
way to register a named RequestDispatcher with the MockServletContext.
This commit addresses these issues by introducing the following in
MockServletContext.
- a new defaultServletName property for configuring the name of the
default Servlet, which defaults to "default"
- named RequestDispatchers can be registered and unregistered
- a MockRequestDispatcher is registered for the "default" Servlet
automatically in the constructor
- when the defaultServletName property is set to a new value the
the current default RequestDispatcher is unregistered and replaced
with a MockRequestDispatcher for the new defaultServletName
Issue: SPR-9587
The MVC Java config and the MVC namespace now support options to
configure content negotiation. By default both support checking path
extensions first and the "Accept" header second. For path extensions
.json, .xml, .atom, and .rss are recognized out of the box if the
Jackson, JAXB2, or Rome libraries are available. The ServletContext
and the Java Activation Framework may be used as fallback options
for path extension lookups.
Issue: SPR-8420
After this change each call stack level pushes and pops an async
Callable to ensure the AsyncExecutionChain is in sync with the
call stack. Before this change, a controller returning a "forward:"
prefixed string caused the AsyncExecutionChain to contain a
extra Callables that did not match the actual call stack.
Issue: SPR-9611
The Atom/RSS message converters are now registered ahead of the
Jackson and the JAXB2 message converters by default. Since the Atom
and RSS converters convert to and from very specific object types
Feed and Channel respectively, that shouldn't introduce any regressions
and will work more intuitively when the requested media type is "*/*".
Issue: SPR-9054
Before this change @ExceptionHandler methods could be located in and
apply locally within a controller. The change makes it possible to have
such methods applicable globally regardless of the controller that
raised the exception.
The easiest way to do that is to add them to a class annotated with
`@ExceptionResolver`, a new annotation that is also an `@Component`
annotation (and therefore works with component scanning). It is also
possible to register classes containing `@ExceptionHandler` methods
directly with the ExceptionHandlerExceptionResolver.
When multiple `@ExceptionResolver` classes are detected, or registered
directly, the order in which they're used depends on the the `@Order`
annotation (if present) or on the value of the order field (if the
Ordered interface is implemented).
Issue: SPR-9112
Before this change HandlerMethod used ClassUtils.getUserClass(Class<?>)
to get the real user class, and not one generated by CGlib. However it
failed to that under all circumstances. This change fixes that.
Issue: SPR-9490
Before this change the StringHttpMessageConverter used a fixed charset
"ISO-8859-1" if the requested content type did not specify one. This
change adds a defaultCharset field and a constructor to configure it in
StringHttpMessageConverter.
Issue: SPR-9487
Ensure that NonClosingOutputStream calls with a byte array call the
corresponding methods of the underlying OutputStream rather than
relying on the default NonClosingOutputStream implementation, which
writes one bte at a time. This significantly improves performance.
Issues: SPR-9530
Following the introduction of ContentNegotiationManager that allows,
among other things, to configure the file extensions to use for content
negotiation, this change adds "smart" suffix pattern match that matches
against the configured file extensions only rather than against any
extension.
Given the request mapping "/jobs/{jobName}" and one configured file
extension ("json"), a request for "/jobs/my.job" will select the
pattern "/jobs/{jobName}" while a request for "/jobs/my.job.json" will
select the pattern "/jobs/{jobName}.json". Previously, both requests
would have resulted in the pattern "/jobs/{jobName}.*".
Issue: SPR-7632, SPR-8474
The HTTP PATCH method is now supported whereever HTTP methods are used.
Annotated controllers can be mapped to RequestMethod.PATCH.
On the client side the RestTemplate execute(..) and exchange(..)
methods can be used with HttpMethod.PATCH. In terms of HTTP client
libraries, Apache HttpComponents HttpClient version 4.2 or later is
required (see HTTPCLIENT-1191). The JDK HttpURLConnection does not
support the HTTP PATCH method.
Issue: SPR-7985
Introduced ContentNeogtiationStrategy for resolving the requested
media types from an incoming request. The available implementations
are based on path extension, request parameter, 'Accept' header,
and a fixed default content type. The logic for these implementations
is based on equivalent options, previously available only in the
ContentNegotiatingViewResolver.
Also in this commit is ContentNegotiationManager, the central class to
use when configuring content negotiation options. It accepts one or
more ContentNeogtiationStrategy instances and delegates to them.
The ContentNeogiationManager can now be used to configure the
following classes:
- RequestMappingHandlerMappingm
- RequestMappingHandlerAdapter
- ExceptionHandlerExceptionResolver
- ContentNegotiatingViewResolver
Issue: SPR-8410, SPR-8417, SPR-8418,SPR-8416, SPR-8419,SPR-7722
Commit aa415d7c0c introduced
JacksonObjectMapperFactoryBean and associated tests, but with Windows
(CRLF) line endings instead of the conventional Unix (LF) line endings.
This commit converts these files to LF endings using the handy
`dos2unix` utility.
Issue: SPR-9125
The BeanFactory makes it easier to configure a customized Jackson
ObjectMapper (for example enable/disable certain features).
This bean factory is usually used with
MappingJacksonHttpMessageConverter or MappingJacksonJsonView.
See JavaDoc for examples.
Issue: SPR-9125
Previously MediaType could only parse double-quoted parameters without
raising an IllegalArgumentException. Now parameters can also be
single-quoted.
Issue: SPR-8917
HttpStatus cannot be created with an unknown status code. If a server
returns a status code that's not in the HttpStatus enum values, an
IllegalArgumentException is raised. Rather than allowing it to
propagate as such, this change ensures the actual exception raised is
a RestClientException.
Issue: SPR-9406
Default HTTP error exceptions thrown from RestTemplate now include
response headers in addition to the response body. In particular, this
enables inspection of the Content-Type header allowing manual
deserialization of the response body without guessing as to the content
type.
- introduce HttpStatusCodeException#getResponseHeaders
- add constructor with headers param for HttpStatusCodeException,
HttpClientErrorException and HttpServerErrorException
- preserve exsisting constructor signatures
- mark HttpHeaders as Serializable
- generate new serialVersionUID where needed
Issue: SPR-7938
Rossen Stoyanchev
Phillip Webb
Chris Beams
Rob Winch
Arjen Poutsma
Sam Brannen
Juergen Hoeller
Dmitry Katsubo
David J. Biesack
Maxim Valyanskiy
Scott Andrews