The Apache Wicket PMC is proud to announce Apache Wicket 6.17.0!

This release marks another minor release of Wicket 6. Starting
with Wicket 6 we use semantic versioning for the future development
of Wicket, and as such no API breaks are present in this release
compared to 6.0.0.

New and noteworthy

This release fixes 31 bugs and adds 29 improvements.

- Make Wicket-Atmosphere testable - AtmosphereTester (WICKET-5452)

- Introduce a marker interface for exception which are recommended to
  be handler by the framework (WICKET-5628)

- Lots of work on the serialization/object checkers (WICKET-5634,
  WICKET-5642, WICKET-5667)

See the changelog added below for more detailed information concerning
this release.

Using this release

With Apache Maven update your dependency to (and don't forget to
update any other dependencies on Wicket projects to the same version):


Or download and build the distribution yourself, or use our
convenience binary package

 * Source:
 * Binary:

Upgrading from earlier versions

If you upgrade from 6.y.z this release is a drop in replacement. If
you come from a version prior to 6.0.0, please read our Wicket 6
migration guide found at


Have fun!

— The Wicket team


The signatures for the source release artefacts:

Signature for

Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools -


Signature for apache-wicket-6.17.0.tar.gz:

Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools -



CHANGELOG for 6.17.0:

** Sub-task

    * [WICKET-5633] - Make JavaScriptFilteredIntoFooterHeaderResponse
non-final to be able to create custom filters

** Bug

    * [WICKET-5371] - IllegalArgumentException: Argument 'page' may
not be null. - when sending event from asynchronous process
    * [WICKET-5539] - Allow preserving of the parsed PageParameters
when re-creating an expired page
    * [WICKET-5564] - AjaxRequestTarget.focusComponent() does not work
when two Ajax responses arrive next to each other
    * [WICKET-5603] - OnChangeAjaxBehavior attached to DropDownChoice
produces two Ajax requests in Chrome v35
    * [WICKET-5607] - Wicket Ajax fires calls scheduled by
AbstractAjaxTimerBehavior even after unload of the page
    * [WICKET-5609] - AutoCompleteTextField can only complete text
that is visible on screen browser screen
    * [WICKET-5615] - UploadProgressBar does not show up if no
FileUploadField is given
    * [WICKET-5616] - CLONE - ModalWindow is not visible in Safari
when opened from a link at the bottom of a large page
    * [WICKET-5619] - ConcurrentModificationException may occur when
    * [WICKET-5624] - Do not throw when WebSocket is not supported
    * [WICKET-5626] - ConcatBundleResource#reportError() doesn't print
the resource attributes
    * [WICKET-5630] - Fix last button translation germany of wizard to 'Letzter'
    * [WICKET-5631] - Allow submitting with POST method for PhantomJS
    * [WICKET-5636] - Update StatelessForm's and AbstractRepeater's
javadoc that FormComponents should be repeated only with RepeatingView
    * [WICKET-5637] - Fix the encoding of the Chinese translations for
Wizard component
    * [WICKET-5639] - ResourceResponse does not write headers when
status code is set
    * [WICKET-5643] - WebPageRenderer should bind a Session if
redirect is required and the session is temporary.
    * [WICKET-5647] - missing generic cast causes compile error on OS X / jdk 8
    * [WICKET-5655] - Problem with setting of IComponentInheritedModel
    * [WICKET-5656] - PropertyResolver does not scan for NotNull in
annotation tree
    * [WICKET-5657] - wicket-autocomplete may fail after preceeding Ajax request
    * [WICKET-5662] - @SpringBean(name="something", required=false)
still throws org.springframework.beans.factory.NoSuchBeanDefinitionException:
No bean named 'something' is defined
    * [WICKET-5670] -
should be Serializable (IClusterable)
    * [WICKET-5679] - RenderStrategy REDIRECT_TO_RENDER lets fail test
with BaseWicketTester#startComponentInPage
    * [WICKET-5680] - AjaxEditableLabel keeps raw input after cancel
following a validation failure
    * [WICKET-5682] - AbstractAjaxTimerBehavior fails to trigger
    * [WICKET-5684] - Autocomplete example renders the search term
    * [WICKET-5685] - jquery.wicketatmosphere.js is not packed in
wicket-atmosphere.jar and thus leads to 404
    * [WICKET-5686] - @Inject should require the bean dependency
instead of setting null
    * [WICKET-5687] - content type in header is being lost when using
a AbstractTransformerBehavior
    * [WICKET-5688] - Restore the functionality an IPageManager to be
able to clean all data/pages for the current session

** Improvement

    * [WICKET-4344] - Implement onValidateModelObjects() and
beforeUpdateFormComponentModels() for nested forms
    * [WICKET-4660] - Make it possible to notify about Atmosphere
internal events
    * [WICKET-5452] - Make Wicket-Atmosphere testable - AtmosphereTester
    * [WICKET-5602] - DynamicImageResource should set the mime type
after reading the image data
    * [WICKET-5605] - Store browser capabilities in local variables in
    * [WICKET-5611] - Add AjaxChannel.DEFAULT constant = "0" and type "Queue"
    * [WICKET-5627] - broadcastMessage(): hook to set more
thread-local context before rendering components
    * [WICKET-5628] - Introduce a marker interface for exception which
are recommended to be handler by the framework
    * [WICKET-5629] - Add an HeaderItem for meta data tags such as
<meta> or canonical <link>
    * [WICKET-5634] - Add IObjectCheckers that fails the serialization
when the Session or another Page are serialized
    * [WICKET-5635] - Provide a way to modify
ResourceReferenceRegistry.DefaultResourceReferenceFactory externally
to be used by wicket-bootstrap-less
    * [WICKET-5642] - CheckingOutputObjectStream should filter
duplicates by identity, not by equality
    * [WICKET-5645] - Markup String of IMarkupResourceStreamProvider
throws NPE for inherited markup
    * [WICKET-5646] - Allow subclasses of
ComponentStringResourceLoader to stop at specific components
    * [WICKET-5648] - CookieUtils - multivalue related methods are
broken due to the usage of ";" as a separator for the values
    * [WICKET-5650] - Make is possible to position the choice label
before/after/around the choice
    * [WICKET-5651] - Add TagTester#getChild(String tagName) method
    * [WICKET-5652] - Improve Javadoc of Ajax behaviors concerning
their onXyz() methods
    * [WICKET-5653] - Add a setter for IViolationTranslator to
    * [WICKET-5654] - DefaultViolationTranslator should maybe use getMessage()
    * [WICKET-5658] - AjaxFormComponentUpdatingBehavior should not
clear the rawInput when updateModel is false
    * [WICKET-5659] - Add a setting to MultiFileUploadField to not
close the file uploads' streams
    * [WICKET-5660] - Throw more specific exception when a component
cannot be found by ListenerInterfaceRequestHandler
    * [WICKET-5667] - Preserve the NotSerializableException if an
error occur while using the IObjectCheckers
    * [WICKET-5668] - StringResourceModel with custom locale
    * [WICKET-5671] - Rename in the quickstart when
creating a project for WildFly
    * [WICKET-5673] - Improve BookmarkableMapper and
BasicResourceReferenceMapper to not match when the last segment is
    * [WICKET-5674] - Use jquery.atmosphere.js as a Webjar
    * [WICKET-5683] - PreviousButton isEnabled() should bo logical
conjunction of getWizardModel().isPreviousAvailable() and

** Task

    * [WICKET-5604] - Add a page to the site that lists other Apache
projects that use Wicket
    * [WICKET-5632] - Use frontend-maven-plugin to run the JavaScript tests
    * [WICKET-5665] - WicketTester#assertComponentOnAjaxResponse()
cannot test invisible components

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