[Source] XPatharserDemo

 

출처 : http://www.tutorialspoint.com/java_xml/java_jdom_parse_document.htm

 

   
      dinkar
      kad
      dinkar
      85
   
   
      Vaneet
      Gupta
      vinni
      95
   
   
      jasvir
      singh
      jazz
      90
   

 

package com.file .utils;

import java. io.File ;
import java. io.IOException ;

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 .Element;
import org. w3c.dom .Node;
import org. w3c.dom .NodeList;
import org. xml.sax .SAXException;

public class XPathParserDemo {
    public static void main( String[] args ) {
        try {
            File inputFile = new File ("d:/xPathTest.xml");
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory. newInstance();
            DocumentBuilder dBuilder ;
           
            dBuilder = dbFactory. newDocumentBuilder();
           
            Document doc = dBuilder.parse (inputFile) ;
            doc.getDocumentElement ().normalize ();
           
            // Build XPath
            XPath xPath = XPathFactory.newInstance() .newXPath() ;
           
            String expression = "/class/student" ;
            NodeList nodeList = (NodeList) xPath.compile (expression) .evaluate( doc, XPathConstants. NODESET);
            for ( int i = 0; i < nodeList. getLength(); i++ ) {
                Node nNode = nodeList.item (i) ;
                System.out. println("\nCurrent Element :" + nNode.getNodeName ());
                if ( nNode.getNodeType () == Node.ELEMENT_NODE ) {
                    Element eElement = (Element) nNode;
                    System.out. println("Student roll no : " + eElement.getAttribute ("rollno")) ;
                    System.out. println("First Name : " + eElement.getElementsByTagName ("firstname") .item( 0). getTextContent());
                    System.out. println("Last Name : " + eElement.getElementsByTagName ("lastname") .item( 0). getTextContent());
                    System.out. println("Nick Name : " + eElement.getElementsByTagName ("nickname") .item( 0). getTextContent());
                    System.out. println("Marks : " + eElement.getElementsByTagName ("marks") .item( 0). getTextContent());
                }
            }
        } catch (ParserConfigurationException e) {
            e.printStackTrace ();
        } catch (SAXException e) {
            e.printStackTrace ();
        } catch (IOException e) {
            e.printStackTrace ();
        } catch (XPathExpressionException e) {
            e.printStackTrace ();
        }
    }
}

 

Current Element :student Student roll no : 393 First Name : dinkar Last Name : kad Nick Name : dinkar Marks : 85   Current Element :student Student roll no : 493 First Name : Vaneet Last Name : Gupta Nick Name : vinni Marks : 95   Current Element :student Student roll no : 593 First Name : jasvir Last Name : singh Nick Name : jazz Marks : 90