org.w3c.dom.html.HTMLLinkElement#org.apache.html.dom.HTMLDocumentImpl源码实例Demo

private HTMLDocumentImpl parseDocument(String htmlData) throws DiscoveryException
{
    OpenID4JavaDOMParser parser = new OpenID4JavaDOMParser();
    try
    {
        parser.parse(OpenID4JavaDOMParser.createInputSource(htmlData));
    }
    catch (Exception e)
    {
        throw new DiscoveryException("Error parsing HTML message",
        		OpenIDException.DISCOVERY_HTML_PARSE_ERROR, e);
    }

    if (parser.isIgnoredHeadStartElement())
    {
        throw new DiscoveryException(
                "HTML response must have exactly one HEAD element.",
                OpenIDException.DISCOVERY_HTML_PARSE_ERROR);
    }

    return (HTMLDocumentImpl) parser.getDocument();
}
 

private HTMLDocumentImpl parseDocument(String htmlData) throws YadisException
{
    OpenID4JavaDOMParser parser = new OpenID4JavaDOMParser();
    try
    {
        parser.parse(OpenID4JavaDOMParser.createInputSource(htmlData));
    }
    catch (Exception e)
    {
        throw new YadisException("Error parsing HTML message",
                OpenIDException.YADIS_HTMLMETA_INVALID_RESPONSE, e);
    }

    if (parser.isIgnoredHeadStartElement())
    {
            throw new YadisException("HTML response must have exactly one HEAD element.",
                            OpenIDException.YADIS_HTMLMETA_INVALID_RESPONSE);
    }

    return (HTMLDocumentImpl) parser.getDocument();
}
 

@Test
public void testFirstElement() {
    final HTMLDocumentImpl owner = new HTMLDocumentImpl();
    final HTMLBodyElement n = new HTMLBodyElementImpl(owner, "body");
    final HTMLDivElement d = new HTMLDivElementImpl(owner, "div");
    n.appendChild(d);
    Assert.assertNull(OdfToolkitUtil.getFirstElement(n, "ddd"));
    Assert.assertEquals(d, OdfToolkitUtil.getFirstElement(n, "div"));
}
 

public void parseHtml(String htmlData, HtmlResult result)
        throws DiscoveryException
{
    if (DEBUG)
        _log.debug("Parsing HTML data:\n" + htmlData);

    HTMLDocumentImpl doc = this.parseDocument(htmlData);

    NodeList heads = doc.getElementsByTagName("head");
    if (heads.getLength() != 1)
        throw new DiscoveryException(
                "HTML response must have exactly one HEAD element, "
                        + "found " + heads.getLength() + " : "
                        + heads.toString(),
                OpenIDException.DISCOVERY_HTML_PARSE_ERROR);

    HTMLHeadElement head = (HTMLHeadElement) doc.getHead();
    NodeList linkElements = head.getElementsByTagName("LINK");
    for (int i = 0, len = linkElements.getLength(); i < len; i++)
    {
        HTMLLinkElement linkElement = (HTMLLinkElement) linkElements.item(i);
        setResult(linkElement.getRel(), linkElement.getHref(), result);
    }

    if (DEBUG)
        _log.debug("HTML discovery result:\n" + result);
}
 

private DocumentFragment parseTagSoup(InputSource input) throws Exception {
	HTMLDocumentImpl doc = new HTMLDocumentImpl();
	DocumentFragment frag = doc.createDocumentFragment();
	DOMBuilder builder = new DOMBuilder(doc, frag);
	org.ccil.cowan.tagsoup.Parser reader = new org.ccil.cowan.tagsoup.Parser();
	reader.setContentHandler(builder);
	reader.setFeature(org.ccil.cowan.tagsoup.Parser.ignoreBogonsFeature, true);
	reader.setFeature(org.ccil.cowan.tagsoup.Parser.bogonsEmptyFeature, false);
	reader.setProperty("http://xml.org/sax/properties/lexical-handler", builder);
	reader.parse(input);
	return frag;
}
 

public static DocumentFragment fromJsoup(
        org.jsoup.nodes.Document jsoupDocument) {
    HTMLDocumentImpl htmlDoc = new HTMLDocumentImpl();
    htmlDoc.setErrorChecking(false);
    DocumentFragment fragment = htmlDoc.createDocumentFragment();
    org.jsoup.nodes.Element rootEl = jsoupDocument.child(0); // skip the
                                                             // #root node
    NodeTraversor.traverse(new W3CBuilder(htmlDoc, fragment), rootEl);
    return fragment;
}
 

public static Node parse( String content ) throws SAXException, IOException {
  DOMFragmentParser parser = new DOMFragmentParser();
  HTMLDocument document = new HTMLDocumentImpl();
  DocumentFragment fragment = document.createDocumentFragment();

  InputSource is = new InputSource( new StringReader( content ) );
  parser.parse( is, fragment );
  return fragment;
}
 

@Test(expected = NullPointerException.class)
public void testAttributeNull() {
    final Node n = new HTMLBodyElementImpl(new HTMLDocumentImpl(), "name");
    OdfToolkitUtil.getAttribute(n, "attr");
}
 

@Test
public void testAttribute() {
    final HTMLBodyElement n = new HTMLBodyElementImpl(new HTMLDocumentImpl(), "body");
    n.setBgColor("color");
    Assert.assertEquals("color", OdfToolkitUtil.getAttribute(n, "bgcolor"));
}
 

public String getHtmlMeta(String input) throws YadisException
{
    String xrdsLocation = null;

    HTMLDocumentImpl doc = this.parseDocument(input);
    if (DEBUG)
    {
        try
        {
            _log.debug("document:\n" + OpenID4JavaDOMParser.toXmlString(doc));
        } catch (TransformerException e)
        {
            _log.debug("An exception occurs while transforming the document to string in debugging.", e);
        }
    }

    NodeList heads = doc.getElementsByTagName("head");
    if (heads.getLength() != 1)
        throw new YadisException(
                "HTML response must have exactly one HEAD element, "
                        + "found " + heads.getLength() + " : "
                        + heads.toString(),
                OpenIDException.YADIS_HTMLMETA_INVALID_RESPONSE);

    HTMLHeadElement head = (HTMLHeadElement) doc.getHead();
    NodeList metaElements = head.getElementsByTagName("META");
    if (metaElements == null || metaElements.getLength() == 0)
    {
        if (DEBUG)
            _log.debug("No <meta> element found under <html><head>. " +
            "See Yadis specification, section 6.2.5/1.");
    }
    else
    {
        for (int i = 0, len = metaElements.getLength(); i < len; i++)
        {
            HTMLMetaElement metaElement = (HTMLMetaElement) metaElements.item(i);

            String httpEquiv = metaElement.getHttpEquiv();
            if (YadisResolver.YADIS_XRDS_LOCATION.equalsIgnoreCase(httpEquiv))
            {
                if (xrdsLocation != null)
                    throw new YadisException(
                        "More than one "
                            + YadisResolver.YADIS_XRDS_LOCATION
                            + "META tags found in HEAD: "
                            + head.toString(),
                        OpenIDException.YADIS_HTMLMETA_INVALID_RESPONSE);

                xrdsLocation = metaElement.getContent();
                if (DEBUG)
                    _log.debug("Found " + YadisResolver.YADIS_XRDS_LOCATION
                        + " META tags.");
            }
        }
    }
    return xrdsLocation;
}
 

public W3CBuilder(HTMLDocumentImpl doc, DocumentFragment fragment) {
    this.fragment = fragment;
    this.doc = doc;
}