XMLConverter.java 文件源码

/**
 * Returns the node in the given document at the specified XPath.
 * 
 * @param node
 *            The document to be checked.
 * @param xpathString
 *            The xpath to look at.
 * @return The node at the given xpath.
 * @throws XPathExpressionException
 */
public static Node getNodeByXPath(Node node, String xpathString)
        throws XPathExpressionException {

    final XPathFactory factory = XPathFactory.newInstance();
    final XPath xpath = factory.newXPath();
    xpath.setNamespaceContext(new XmlNamespaceResolver(
            getOwningDocument(node)));
    final XPathExpression expr = xpath.compile(xpathString);
    return (Node) expr.evaluate(node, XPathConstants.NODE);
}