Question

80

How to add an element in this XML file using DOM parser?

rated 0 times [ 82] [ 2] / answers: 1 / hits: 13781 / 11 Years ago, tue, january 7, 2014, 12:00:00

I want to know how can I modify this XML file,

<?xml version=1.0?>

<nombre>

    <id>12345</id>

</nombre>

into a XML file like this using DOM parser in Java,

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

    <heat>2013-09-09</heat>

    <nombre>

      <id>12345</id>

    </nombre>

I have tried this but doesn't work,

public class Test {



public static final String xmlFilePath = src/vnx.xml;

public static final String xml2FilePath = src/input2.xml;



public static void main(String argv[]) {



    try {



        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();

        DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();

        Document document = documentBuilder.parse(xmlFilePath);



        Element version = document.createElement(heat);

        version.appendChild(document.createTextNode(2013-09-09));

        document.appendChild(version);







        TransformerFactory transformerFactory = TransformerFactory.newInstance();



        Transformer transformer = transformerFactory.newTransformer();

        DOMSource domSource = new DOMSource(document);



        StreamResult streamResult = new StreamResult(new File(xml2FilePath));

        transformer.transform(domSource, streamResult);





    } catch (ParserConfigurationException pce) {

        pce.printStackTrace();

    } catch (TransformerException tfe) {

        tfe.printStackTrace();

    } catch (IOException ioe) {

        ioe.printStackTrace();

    } catch (SAXException sae) {

        sae.printStackTrace();

    }

}

}

It returns a parsing error. Any suggestion would be really helpful. Thanks a lot!

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neildrews

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answered 11 Years ago bradford · Accepted Answer

Try This Code,I have used Xpath to navigate XML and created the new Node and Appended to XML.

Or Without XPATH you can Do it.
Following Code is without Xpath.Xpath Code is in Comment

 try {

    File inputFile = new File(src/vnx.xml);

    DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();

    DocumentBuilder builder = factory.newDocumentBuilder();

    // creating input stream

    Document doc = builder.parse(inputFile );



    //Xpath compiler

    //XPathFactory xpf = XPathFactory.newInstance();

    // XPath xpath = xpf.newXPath();



    //XPath Query

   // XPathExpression expr = xpath.compile(/);

    //Node attributeElement = (Node) expr.evaluate(doc, XPathConstants.NODE);



    //New Node          

    Node childnode=doc.createElement(heat);        

    doc .appendChild(childnode);

    childnode.setTextContent(12-34-56);



    // writing xml file

    TransformerFactory transformerFactory = TransformerFactory.newInstance();

    Transformer transformer = transformerFactory.newTransformer();

    DOMSource source = new DOMSource(doc);

     File outputFile = new File(src/input2.xml);

    StreamResult result = new StreamResult(outputFile );

    // creating output stream

    transformer.transform(source, result);

    } catch (Exception e) {

        e.printStackTrace();

    }

In case file not found,please check the path of your XML files
Thank you