harvest是一个下载html网页得机器人

												        Document Type Definition for the HyperText Markup Language					with strict validation (HTML Strict DTD).									$Id: html-s.dtd,v 1.3 1995/06/02 18:55:46 connolly Exp $									Author: Daniel W. Connolly 					See Also: http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html				-->													"-//IETF//DTD HTML 2.0 Strict//EN"								        -- Typical usage:								            						"-//IETF//DTD HTML Strict//EN">					    					    ...					    					--					>																								%html;