This interceptor creates the HttpSession if it doesn't exist, also SessionMap is recreated and put in ServletActionContext.
This is particular useful when using the <@s.token> tag in freemarker templates. The tag
do require that a HttpSession is already created since freemarker commits the response to the client immediately.
Interceptor parameters: Example: <action name="someAction" class="com.examples.SomeAction"> <interceptor-ref name="createSession"/> <interceptor-ref name="defaultStack"/> <result name="input">input_with_token_tag.ftl</result> </action>
@version $Date$ $Id$