Re: How do you get a class attribute from a span tag
On 02-02-2011 13:12, Daryn wrote:
I am using org.w3c.dom to extract values from some HTML.
Some html with a span tag like this:<SPAN class='item c123'>-</SPAN>
My code is like this:
StringReader reader = new StringReader(html());
InputSource inputSource = new InputSource(reader);
SAX2DOM sax2dom = new SAX2DOM();
Parser tagSoupParser = new Parser();
tagSoupParser.setContentHandler(sax2dom);
tagSoupParser.setFeature(Parser.namespacesFeature, false);
tagSoupParser.parse(inputSource);
Document document = (Document) sax2dom.getDOM();
NodeList trElements = document.getElementsByTagName("span");
Node node = trElements.item(0);
I would like to do something like this:
((Element)node).getAttributes().getNamedItem("class")
But that throws an "com.sun.org.apache.xerces.internal.dom.TextImpl
cannot be cast to org.w3c.dom.Element" exception.
How can I get the value of the class attribute in that span tag?
This:
String xml = "<SPAN class='item c123'>bla bla</SPAN>";
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(new StringReader(xml )));
Element elm = (Element)doc.getElementsByTagName("SPAN").item(0);
System.out.println("content = " +
elm.getFirstChild().getNodeValue());
System.out.println("class = " + elm.getAttribute("class"));
works here.
Arne
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