利用htmlparser解析网页的标题、keywords和Description
网页中的标题、keywords和Description这三项对于建立网页索引是非常重要的。以下是用htmlparser对网页进行解析来得到这三个值。
try {NodeFilter title_filter = new TagNameFilter("title");NodeFilter meta_filter = new TagNameFilter("meta");OrFilter filters = new OrFilter();filters.setPredicates(new NodeFilter[]{title_filter,meta_filter});Parser parser = new Parser();parser.setURL("D:\\test.html");parser.setEncoding(parser.getEncoding());NodeList list = parser.extractAllNodesThatMatch(filters);for (int i = 0; i < list.size(); i++) {Tag tag=(Tag) list.elementAt(i);if(tag instanceof MetaTag){String name=tag.getAttribute("name");if(name!=null&&name.equalsIgnoreCase("Keywords")){System.out.println("Keywords : "+tag.getAttribute("content"));}if(name!=null&&name.equalsIgnoreCase("Description")){System.out.println("Description"+" : "+tag.getAttribute("content"));}}else if(tag instanceof TitleTag){System.out.println("Title : "+tag.getText());}}} catch (Exception e) {e.printStackTrace();}?