Examples with NodeClassFilter org.htmlparser.filters.NodeClassFilter used on opensource projects

Example 1 with NodeClassFilter

use of org.htmlparser.filters.NodeClassFilter in project liferay-docs by liferay.

the class CheckLinks method isLdnUrlValid.

/**
 * Returns <code>true</code> if the LDN URL is valid. This method is used to
 * check legacy URLs hosted on LDN.
 *
 * @param  url the URL to check
 * @param  fileName the article's name
 * @param  lineNumber the line number
 * @return <code>true</code> if the LDN URL is valid; <code>false</code>
 *         otherwise
 * @throws IOException if an IO exception occurred
 */
private static boolean isLdnUrlValid(String url, File article, int lineNumber) throws IOException {
    NodeList list = new NodeList();
    boolean validLDNURL = false;
    try {
        Parser htmlParser = new Parser(url);
        list = htmlParser.extractAllNodesThatMatch(new NodeClassFilter(LinkTag.class));
    } catch (ParserException e) {
        logInvalidUrl(article, lineNumber, ldnArticle, false);
    }
    List<String> results = new LinkedList<String>();
    for (int i = 0; i < list.size(); i++) {
        LinkTag link = (LinkTag) list.elementAt(i);
        String linkString = link.getLink();
        results.add(linkString);
    }
    for (String x : results) {
        if (x.contains("2Fsearch&#x25;2Fsearch&#x26;_3_redirect&#x3d;")) {
            logInvalidUrl(article, lineNumber, ldnArticle, false);
        } else {
            validLDNURL = true;
        }
    }
    return validLDNURL;
}

Example 2 with NodeClassFilter

use of org.htmlparser.filters.NodeClassFilter in project laogewen by wen4034.

the class HtmlParserTool method extracLinks.

public static Set<String> extracLinks(String url, LinkFilter filter, String... validate) {
    Set<String> links = Sets.newHashSet();
    try {
        URL realurl = new URL(url);
        URLConnection connection = realurl.openConnection();
        connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
        connection.setReadTimeout(100000);
        connection.setConnectTimeout(100000);
        Parser parser = new Parser(connection);
        parser.setEncoding("UTF-8");
        // 过滤<frame>标签的filter,用来提取frame标签的src属性
        NodeFilter frameFilter = new NodeFilter() {

            @Override
            public boolean accept(Node node) {
                if (node.getText().startsWith("frame src=")) {
                    return true;
                } else {
                    return false;
                }
            }
        };
        OrFilter linkFilter = new OrFilter(new NodeClassFilter(LinkTag.class), frameFilter);
        NodeList list = parser.extractAllNodesThatMatch(linkFilter);
        for (int i = 0; i < list.size(); i++) {
            Node tag = list.elementAt(i);
            if (tag instanceof LinkTag) {
                LinkTag linkTag = (LinkTag) tag;
                String linkurl = linkTag.getLink();
                if (filter.accept(linkurl, validate)) {
                    links.add(linkurl);
                }
            } else {
                String fram = tag.getText();
                int start = fram.indexOf("src=");
                fram = fram.substring(start);
                int end = fram.indexOf(" ");
                if (end == -1) {
                    end = fram.indexOf(">");
                }
                String frameUrl = fram.substring(5, end - 1);
                if (filter.accept(frameUrl, validate)) {
                    links.add(frameUrl);
                }
            }
        }
    } catch (Exception e) {
        System.out.println(url + "链接失败");
        e.printStackTrace();
    }
    return links;
}