Page History

...

The com.opensymphony.xwork2  package has been renamed/migrated to org.apache.struts2 . A simple search/replace should be all that is necessary. Please see below for more detailed package names changes.

...

Templates

...

parameters

...

The FreeMarker template variable parameters has been replaced with attributes to to avoid mixing access to HTTP request parameters. For custom templates or Themes created using with FreeMarker, you will need to search & replace "parameters" with "attributes". See more details in WW-5465.

This change also affects custom components created with <s:component/>  tag, when defining a JSP or Fremarker FreeMarker template to be used with the component tag, please use %{attributes.paramName}  syntax instead of %{parameters.paramName} - please see the docs as well for more.

Stronger security

A number of breaking changes have been made so that the default behaviour of the Struts framework is more predictable and/or more secure. Many of these measures were developed in direct response to real exploits and common critical developer errors.

...