import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.dom4j.Attribute;
import org.dom4j.DocumentException;
import org.dom4j.DocumentFactory;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class XMLTest {

??? public void readXMLByDom(File thefile){
??????? BufferedReader bufferedReader = null;
??????? DocumentBuilder builder = null;
??????? Document doc = null;
??????? try {
??????????? bufferedReader = new BufferedReader(new FileReader(thefile));
??????? } catch ( FileNotFoundException e ) {
??????????? e.printStackTrace();
??????? }
???????
??????? InputSource inputsource = new InputSource(bufferedReader);
???????
??????? DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
??????? try {
??????????? builder = factory.newDocumentBuilder();
??????? } catch ( ParserConfigurationException e ) {
??????????? e.printStackTrace();
??????? }
???????
??????? try {
??????????? doc = builder.parse(inputsource);
//??????????? doc = builder.parse(thefile);
??????? } catch ( SAXException e ) {
??????????? e.printStackTrace();
??????? } catch ( IOException e ) {
??????????? e.printStackTrace();
??????? } finally{
??????????? try {
??????????????? bufferedReader.close();
??????????? } catch ( IOException e ) {
??????????????? e.printStackTrace();
??????????? }
??????? }
???????
??????? NodeList nList_01 = doc.getChildNodes();
??????? Node node = null;
??????? System.out.println("****************** First Level Node*******************");
??????? for ( int i = 0; i < nList_01.getLength(); i++ ) {
??????????? node = nList_01.item(i);
??????????? String temp1 = node.getNodeName();
??????????? System.out.println("Node " + (i+1) + " is :" + temp1);
???????????
??????????? if(node.hasChildNodes()){
??????????????? //attributes
??????????????? if ( node.hasAttributes() ) {
??????????????????? NamedNodeMap namedNodeMap = node.getAttributes();
??????????????????? System.out.println("############## Begin Attributes of " + temp1.toUpperCase() + " : ##############");
??????????????????? for ( int j = 0; j < namedNodeMap.getLength(); j++ ) {
??????????????????????? Node attrNode = namedNodeMap.item(j);
??????????????????????? System.out.println("~~~~~~attrNode "+ (j+1) + " is: " + attrNode.getNodeName() + "? Value is: " + attrNode.getNodeValue());
??????????????????? }
??????????????????? System.out.println("############## End Attributes of " + temp1.toUpperCase() + " : ##############");
??????????????? }
???????????????
??????????????? //child nodes
??????????????? System.out.println("================Begin Second Level Childern Under " + node.getNodeName().toUpperCase() + "=================");
??????????????? NodeList nList_02 = node.getChildNodes();
??????????????? for ( int j = 0; j < nList_02.getLength(); j++ ) {
??????????????????? node = nList_02.item(j);
??????????????????? String temp01 = node.getNodeName();
??????????????????? System.out.println("Node 0" + (j+1) + " is :" + temp01);
???????????????????
??????????????????? if ( node.hasChildNodes() ) {
??????????????????????? System.out.println("----------------Begin Third Level Childern Under " + node.getNodeName().toUpperCase() + "------------------");
??????????????????????? NodeList nList_03 = node.getChildNodes();
??????????????????????? for ( int k = 0; k < nList_03.getLength(); k++ ) {
??????????????????????????? node = nList_03.item(k);
??????????????????????????? System.out.println("Node 00" + (k+1) + " is :" + node.getNodeName() );
??????????????????????????? if ( !node.getNodeName().equals("#text") ) {
??????????????????????????????? System.out.println("Text within this node is: " + node.getTextContent());
??????????????????????????? }
??????????????????????? }
??????????????????????? System.out.println("----------------End Third Level Childern Under " + temp01.toUpperCase() + "------------------");
??????????????????? }
??????????????? }
??????????????? System.out.println("=================End Second Level Childern Under " + temp1.toUpperCase() + "================");
??????????? }
??????? }
??? }
???
??? public void readXMLByDom4j(File thefile){
//??????? DocumentFactory factory = DocumentFactory.getInstance();
//??????? SAXReader saxreader = new SAXReader(factory);
??????? BufferedReader bufferedreader = null;
??????? SAXReader saxreader = new SAXReader();
??????? org.dom4j.Document doc = null;
??????? try {
??????????? bufferedreader = new BufferedReader(new FileReader(thefile));
??????? } catch ( FileNotFoundException e ) {
??????????? e.printStackTrace();
??????? }

??????? try {
??????????? doc = ( org.dom4j.Document ) saxreader.read(bufferedreader);
??????? } catch ( DocumentException e ) {
??????????? e.printStackTrace();
??????? } finally{
??????????? try {
??????????????? bufferedreader.close();
??????????? } catch ( IOException e ) {
??????????????? e.printStackTrace();
??????????? }
??????? }
???????
??????? //iterate Nodes
??????? org.dom4j.Node node = null;
??????? int n = 1;
??????? Iterator it = doc.nodeIterator();
??????? System.out.println("========== iterate Nodes =========");
??????? while ( it.hasNext() ) {
??????????? node = ( org.dom4j.Node ) it.next();
??????????? System.out.println("Name of Node" +n++ + " is :" + node.getName());
??????????? System.out.println("Node type name is : " + node.getNodeTypeName()+"\n");
??????? }
???????
??????? //iterate Elements
??????? Element root = doc.getRootElement();
??????? System.out.println("Root Element : " + root.getName());
???????
??????? //iterate Elements underneath Root Element
??????? Element eleOfRoot = null;
??????? int l = 1;
??????? Iterator eleIt = root.elementIterator();
??????? System.out.println("========== iterate Elements underneath Root Element =========");
??????? while ( eleIt.hasNext() ) {
??????????? eleOfRoot = ( Element ) eleIt.next();
??????????? System.out.println("Element " + l++ + " underneath Root is :" + eleOfRoot.getName());
???????????
??????????? //grandchildren of Root Element
??????????? if ( eleOfRoot.hasMixedContent() ) {
??????????????? Element grandchild = null;
??????????????? int p = 1;
??????????????? Iterator grandIt = eleOfRoot.elementIterator();
??????????????? System.out.println("@@@@@@@@@@@@@@@@@ iterate Elements underneath " + eleOfRoot.getName() + " @@@@@@@@@@@@@@");
??????????????? while ( grandIt.hasNext() ) {
??????????????????? grandchild = ( Element ) grandIt.next();
??????????????????? System.out.println("Element " + 0+ p++ + " underneath " + eleOfRoot.getName() + " is :" + grandchild.getName());
??????????????? }
??????????????? System.out.println("");
??????????? }
??????? }
???????
??????? //iterate Attribute of Root Element
??????? Attribute attr = null;
??????? int m=1;
??????? Iterator attrIt = root.attributeIterator();
??????? System.out.println("========== iterate Attributes of Root Element =========");
??????? while ( attrIt.hasNext() ) {
??????????? attr = ( Attribute ) attrIt.next();
??????????? System.out.println("Attribute " + m++ + " is : " + attr.getName() + " ~~~ Value = " + attr.getValue());
???????????
??????? }
???????
??? }
???
??? public static void main( String[] args ) {
??????? XMLTest test= new XMLTest();
??????? File thefile = new File("F:\\build.xml");
??????? test.readXMLByDom(thefile);
??????? System.out.println("\n>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Below is with Dom4j<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
??????? test.readXMLByDom4j(thefile);
??? }
}