Allows regular expressions to be used in action names. The regular expressions can be in the form {FIELD_NAME} or {FIELD_NAME:REGULAR_EXPRESSION}. For example:
<action name="/{bio:.+}/test/{name}" class="org.apache.struts2.showcase.UITagExample"> <result>/tags/ui/example.jsp</result> </action>
For this to work it is important to set the following:
<constant name="struts.enable.SlashesInActionNames" value="true"/> <constant name="struts.mapper.alwaysSelectFullNamespace" value="false"/> <constant name="struts.patternMatcher" value="regex" />