Question

I’m new to xml parsing, I am trying to parse the following xml file using java.

<a>
<e class="object">
    <amenities class="array">
        <e class="object">
            <id type="number">31</id>
            <name type="string">Internet access available</name>
        </e>
        <e class="object">
            <id type="number">9</id>
            <name type="string">Business center</name>
        </e>

</amenities>
<brands class="array">
        <e class="object">
            <code type="number">291</code>
            <name type="string">Utell</name>
        </e>
        <e class="object">
            <code type="number">72</code>
            <name type="string">Best Western International</name>
        </e>


</brands>
<hotels class="array">
        <e class="object">
            <addressLine1 type="string">4 Rue du Mont-Thabor</addressLine1>             
            <city type="string">Paris</city>                
            <name type="string">Renaissance Paris Vendome Hotel</name>
            <starRating type="string">5</starRating>                
        </e>
        <e class="object">
            <addressLine1 type="string">35 Rue de Berri</addressLine1>              
            <city type="string">Paris</city>                
            <name type="string">Crowne Plaza Hotel PARIS-CHAMPS ELYSÉES</name>
            <starRating type="string">5</starRating>                
        </e>
</hotels>    

</e>
</a>

I only need to list the name tag info(which will be the Hotel name) for that I used following code but it resulted me not only the hotel info but also everything, can anyone please help me parsing this???

Thanks a lot!!!

Here is the java code I used

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import java.io.File;


public class ReadXMLFile {

public static void main(String argv[]) { 

 try {

    File fXmlFile = new File("c:\\file.xml");
    DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
    Document doc = dBuilder.parse(fXmlFile);
    doc.getDocumentElement().normalize();

    System.out.println("Root element :" + doc.getDocumentElement().getNodeName());
    NodeList nList = doc.getElementsByTagName("e");
    System.out.println("-----------------------");

    for (int temp = 0; temp < nList.getLength(); temp++) {

       Node nNode = nList.item(temp);       
       if (nNode.getNodeType() == Node.ELEMENT_NODE) {

          Element eElement = (Element) nNode;

          System.out.println("Hotel Name : "  + getTagValue("name",eElement));


        }
    }
  } catch (Exception e) {
    e.printStackTrace();
  }
 }

 private static String getTagValue(String sTag, Element eElement){
    NodeList nlList= eElement.getElementsByTagName(sTag).item(0).getChildNodes();
    Node nValue = (Node) nlList.item(0); 

    return nValue.getNodeValue();    
 }

}

Answer 1

Pavithira you can use xpath to get only the hotels, below is the main method which you can simple copy/paste at your code.

public static void main(String argv[]) {
        try {

               File fXmlFile = new File("c:\\file.xml");

        DocumentBuilderFactory dbFactory = DocumentBuilderFactory
                .newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(fXmlFile);
        doc.getDocumentElement().normalize();

        System.out.println("Root element :"
                + doc.getDocumentElement().getNodeName());
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr = xpath.compile("//hotels/e");
        NodeList nList = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
        System.out.println("-----------------------");
        for (int temp = 0; temp < nList.getLength(); temp++) {
            Node nNode = nList.item(temp);
            if (nNode.getNodeType() == Node.ELEMENT_NODE) {
                Element eElement = (Element) nNode;
                System.out.println("Hotel Name : "
                        + getTagValue("name", eElement));
            }
        }
    } catch (Exception e) {
        e.printStackTrace();

    }