<?xml version="1.0" encoding="UTF-8"?>

<elements>
  
  
  
  <student sid="001">    
    <sheet_Amount>3456</sheet_Amount>   
    <sheet_Approve>approved</sheet_Approve>    
    <sheet_Name>ruantongdongli</sheet_Name>
    <sheet_ID>1111111111111111</sheet_ID>
    <sheet_Date>20090524</sheet_Date> 
  </student>
</elements>

package com.ibm.filenet.edu;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.xml.parsers.*;


import org.w3c.dom.*;
import org.xml.sax.SAXException;

public class ParseXML {
    /*public static void main(String[] args) {
        List<Object> list = new ArrayList<Object>(); 
        ParseXML instance = new ParseXML();
        String filePath = "C:\\Source\\xml\\workflowElement.xml"; 
        list = instance.parse(filePath, list);
        Iterator iterator = list.iterator();
        System.out.println("**************************");
        while(iterator.hasNext()){
            System.out.println(iterator.next().toString());
        }
        
    }*/
    
    
    
    
    
    public List<Object> parse(String filePath, List<Object> list){
        //List<Object> list = null;
        try {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            //File file = new File("C:\\Source\\xml file\\xml\\XML ppt\\xml day4\\dom_ sax\\sax\\candidate.xml");
            Document dom = db.parse(filePath);
            System.out.println("file path: " + dom.getDocumentURI());
            Element root = dom.getDocumentElement(); //root node
            list = Iterator(root, list);
            //System.out.println("********************");
            //Iterator  iterator = list.iterator();
            //while(iterator.hasNext()){
            //    System.out.println(iterator.next().toString());
            //}
            //return list;
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
        
    }

    
    
    public List<Object> Iterator(Element root, List<Object> list) {
        NodeList nodelist = root.getChildNodes();
        //List<Object> list = new ArrayList<Object>();
        for (int i = 0; i < nodelist.getLength(); i++) {
            Node node = nodelist.item(i);
            
            if (node instanceof Text) {
                String value = node.getNodeValue();
                if (value != null && !value.trim().equals("")) {
                    //System.out.println("content: " + value);
                    list.add(value);
                }
            }
            if (node instanceof Element) {
                //System.out.println("node: " + node.getNodeName());
                list.add( node.getNodeName());
                Iterator( (Element)node, list);
            }
        }
        return list;
    }
    
    
}