I'm thinking there's a disconnect between the version of the
Struts tutorial you're following and the version of Struts you're using.
perform() was deprecated and is no longer part of Action, use execute.
logic:redirect doesn't have an action attribute, use one of forward, href, or page (in your case, one of forward='welcome' or href='\Welcome')
Unless you have a reason to be using an older version of Struts (ie: your company is still running
Java 1.3 or something similarly awful) grab the latest version and bookmark the following:
Struts home