A.public.class.AddAction.implements.Action{... B.mapping.findForward("/ch01/result.jsp") C.form.method="get"action="add.do" D.action.name="addAction"path="/add"type="com.svse.web.action.AddAction"
A.Action B.ActionForm C.ActionServlet D.RequestProessor
A.doPost() B.init() C.validate() D.reset()