layout: post title: Apache Wicket 8.0.0-M8 released

The Apache Wicket PMC is proud to announce Apache Wicket 8.0.0-M8!

Apache Wicket is an open source Java component oriented web application framework that powers thousands of web applications and web sites for governments, stores, universities, cities, banks, email providers, and more. You can find more about Apache Wicket at https://wicket.apache.org

This release marks another minor release of Wicket 8. We use semantic versioning for the development of Wicket, and as such no API breaks are present breaks are present in this release compared to 8.0.0.

New and noteworthy

  • Issues WICKET-6457 and WICKET-6465 which caused the page store not to be cleared when session ends are now fixed.

  • This release has dropped Joda Time dependency (WICKET-6105). As consequence module wicket-datetime has been removed from Wicket distribution. Users are invited to migrate to new components based on Java 8 Date and Time APIs which have been added to module wicket-extensions. For those who needs to use old wicket-datetime classes we have migrated the code to WicketStuff project. They can be used adding the following dependency:

    {% highlight xml%} org.wicketstuff wicket-datetime 8.0.0-M8 {% endhighlight%}

  • The experimental module http2-wicket now supports the final servlet 4.0 API specification.

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):

{% highlight xml%} org.apache.wicket wicket-core 8.0.0-M8 {% endhighlight%}

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

Upgrading from earlier versions

If you upgrade from 8.y.z this release is a drop in replacement. If you come from a version prior to 8.0.0, please read our Wicket 8 migration guide found at

Have fun!

— The Wicket team

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The signatures for the source release artefacts:

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This Release

CHANGELOG for 8.0.0-M8:

Bug
  • [WICKET-6455] - AjaxFormSubmitBehavior doesn't submit inner forms
  • [WICKET-6457] - PageStore not cleared at session end
  • [WICKET-6459] - Ajax re-renders of enclosures do not render their children's header contributions
  • [WICKET-6461] - Default constructor is incorrectly called if optional param is not provided in parameter placeholder URL with additional required parameter
  • [WICKET-6462] - When an Ajax Button is submitted, AjaxFormSubmitBehavior # onSubmit is called twice
  • [WICKET-6465] - PageStore not cleared at session end
  • [WICKET-6471] - FileSystemResource file descriptor leak
  • [WICKET-6476] - It is impossible to use multiple WebSocketTester with the same WebApplication
  • [WICKET-6479] - AjaxNewWindowNotifyingBehavior erroneously reports new window
  • [WICKET-6481] - NullPointerException in MountedMapper
  • [WICKET-6485] - IllegalArgumentException: Argument ‘pageClass’ may not be null
Improvement
  • [WICKET-6396] - Model should provide other Optional's methods
  • [WICKET-6451] - Components with collection models do not support unmodifiable or empty sets
  • [WICKET-6460] - Rename AjaxDownload to AjaxDownloadBehavior
  • [WICKET-6463] - Please add additional constructor to Roles
  • [WICKET-6482] - CompoundValidator should implement all Behavior methods
Task
  • [WICKET-6105] - Decommission wicket-datetime