layout: post title: Apache Wicket 8.1.0 released

The Apache Wicket PMC is proud to announce Apache Wicket 8.1.0!

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.

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 8.1.0 {% 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:

Signature for apache-wicket-8.1.0.zip:

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Signature for apache-wicket-8.1.0.tar.gz:

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This Release

CHANGELOG for 8.1.0:

Bug
  • [WICKET-6551] - LazyInitProxyFactory doesn't work correctly at Weblogic
  • [WICKET-6552] - Spring proxy creation fails with IAE inside ASM ClassReader on JDK10
  • [WICKET-6553] - SelectOptions doesn't html-encode option values
  • [WICKET-6564] - PageStoreManager#clear() does not completely clear
  • [WICKET-6568] - Wicket fails / does not encode request header values in AjaxCalls
  • [WICKET-6571] - BaseWebSocketBehavior should check sessionId cookie name dynamically
  • [WICKET-6573] - WicketTesterHelper ignores invalid Ajax-Event names starting with “on”
  • [WICKET-6574] - JQueryResourceReference#get() (still) return V1
  • [WICKET-6584] - Import Junit Package as optional
New Feature
  • [WICKET-6577] - Introduce class GenericWebMarkupContainer
Improvement
  • [WICKET-6560] - Improve serialization warnings in ChainingModel
  • [WICKET-6565] - ResponseIOException logged as an error in DefaultExceptionMapper
  • [WICKET-6575] - Ajax requests are still firing even when placeholder tag is written only
  • [WICKET-6576] - Support multiple dateFormats for LocalDateTextfield
  • [WICKET-6580] - org.apache.wicket.util.lang.Bytes - toString()