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  1. #1
    Join Date
    Mar 2008

    translate this Javascript function to Java?

    I need the following Javascript function translated to Java (org.w3c.dom). Is it possible? If someone can write it, I will be really happy.

    function eval_xpath(xpath)
    {if (document.evaluate) //firefox
    {return document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    else //ie
    {//can not use xmldocument.selectSingleNode(xpath);
    var tags=xpath.slice(1).split('/');
    var ele=document;
    for (var i=0; i<tags.length; ++i)
    {var idx=1;
    if (tags[i].indexOf('[')!=-1)
    var ele=ele.getElementsByTagName(tags[i])[idx-1];
    return ele;
    Last edited by jjk2; 03-16-2011 at 11:44 PM.

  2. #2
    Join Date
    Aug 2002
    Superior, CO, USA
    Taken from my config code. This assumes Java 6.

    package com.xigole.utilities;
    import javax.xml.parsers.DocumentBuilder;
    import javax.xml.parsers.DocumentBuilderFactory;
    import javax.xml.parsers.ParserConfigurationException;
    import javax.xml.xpath.XPath;
    import javax.xml.xpath.XPathConstants;
    import javax.xml.xpath.XPathExpressionException;
    import javax.xml.xpath.XPathFactory;
    import org.w3c.dom.Document;
    import org.w3c.dom.Node;
    import org.w3c.dom.NodeList;
    import org.xml.sax.SAXException;
    public class SysConfig {
    public NodeList getConfigurationParameters( String path ) throws Exception {   
        Document configDocument = null;
        XPath xpath;
        InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream( "systemConfig.xml" );
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = null;
        try {
            db = dbf.newDocumentBuilder();
            configDocument = db.parse(inputStream);
        catch (ParserConfigurationException pce) {
            throw new SAXException("Can't get new DocumentBuilder", pce);
        catch (IOException ioe) {
            throw new SAXException( "Can't get parse document", ioe);
        xpath = XPathFactory.newInstance().newXPath();
        Node parentNode = configDocument.getDocumentElement();
        NodeList nodeList = null;
        try {
            nodeList = (NodeList)xpath.evaluate( path, parentNode, XPathConstants.NODESET);
        catch (XPathExpressionException xpe) {
            throw new SAXException("Cannot evaluate xpath path", xpe);
        if( (nodeList == null) || (nodeList.getLength() == 0) )
            return null;
        return nodeList;
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