need a snippet ( probably with XPAth ) to traverse all XML nodes and produce an output file

Posted on 2009-05-10
Last Modified: 2013-11-11
containing all full node names ( combining all levels, i.e. level1name.level2name. etc. .. ) and
their values for example, <abc>
                                                 <val1tag> value 1 <val1tag\>

would produce abc.val1tag = value 1
Question by:AlexF777
  • 2
LVL 23

Expert Comment

ID: 24348122
Using XSL may be a better way.

Could you provide a bit more detail on what you need. A more extensive and complete example of the input and output would help.

Expert Comment

ID: 24349809
Attached is a sample java code to get the result. Not sure if this is what you are looking for -

Accepted Solution

sundar62 earned 500 total points
ID: 24349866



import javax.xml.transform.Transformer;

import javax.xml.transform.dom.DOMSource;


import org.w3c.dom.Document;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import java.util.ArrayList;

import java.util.*;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.Source;

import javax.xml.transform.dom.DOMSource;

public class XmlWalker {


    public static void main(String[] args) throws Exception {

        new XmlWalker().walk("persons.xml");



    private void walk(String filename) throws Exception {

        Document dom = parseXmlFile(filename);

        printXpath("", dom);



    private Document parseXmlFile(String filename) throws Exception {

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

        DocumentBuilder db = dbf.newDocumentBuilder();

        return db.parse(filename);



    private void printXpath(String xpath, Node node) {

        short type = node.getNodeType();

        if (type == Node.DOCUMENT_NODE || type == Node.ELEMENT_NODE) {

            if (type == Node.ELEMENT_NODE) {

                xpath += nodePath(node);

                System.out.println(xpath + "-->" + node.getTextContent());


            NodeList children = node.getChildNodes();

            for (int index = 0; index < children.getLength(); ++index) {

                printXpath(xpath, children.item(index));





    private String nodePath(Node node) {

        Node parent = node.getParentNode();

        StringBuilder buf = new StringBuilder(256);


        if (parent == null || parent.getNodeType() == Node.DOCUMENT_NODE) {


        } else if (getNodeId(node) != null) {

            buf.append(".").append(node.getNodeName()).append("[@id='").append(getNodeId(node) + "']");

        } else {


            List<Node> siblings = getChildrenByName(parent, node.getNodeName());

            if (siblings.size() > 1) {

                buf.append("[").append((siblings.indexOf(node) + 1)).append("]");



        return buf.toString().toString();



    private String getNodeId(Node node) {

        Node id = getNamedItem(node.getAttributes(), "id");

        return (id != null) ? id.getNodeValue() : null;



    private Node getNamedItem(NamedNodeMap attributes, String name) {

        return (attributes != null) ? attributes.getNamedItem(name) : null;



    private List<Node> getChildrenByName(Node parent, String name) {

        NodeList children = parent.getChildNodes();

        List<Node> results = new ArrayList<Node>();

        for (int i = 0; i < children.getLength(); ++i) {

            if (nameEquals(children.item(i), name))



        return results;



    private boolean nameEquals(Node child, String name) {

        return (child != null && name.equals(child.getNodeName()));



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