Here are some really good books that have plenty of examples:
Struts in Action
By: Ted Husted, Cedric Dumoulin
ISBN 1930110502
Struts: Kick Start
By: James Turner, Kevin Bedell
ISBN 0672324725
Programming Jakarta Struts
By: Chuck Cavaness
ISBN 0596003285
Professional Jakarta Struts
By: Rick Hightower, James Goodwill
ISBN 0764544373
(this last one may be hard to get since WROX was bought out and perhaps may be no longer in print)
You can get a really good discount at:
http://www.bookpool.com HTH !!
CH