How to Load an Org.W3C.Dom.Document from Xml in a String

How do I load an org.w3c.dom.Document from XML in a string?

This works for me in Java 1.5 - I stripped out specific exceptions for readability.

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import java.io.ByteArrayInputStream;

public Document loadXMLFromString(String xml) throws Exception
{
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

    factory.setNamespaceAware(true);
    DocumentBuilder builder = factory.newDocumentBuilder();

    return builder.parse(new ByteArrayInputStream(xml.getBytes()));
}

Parsing String to org.w3c.dom.Document with namespaces

As per documentaion,

NodeList getElementsByTagNameNS(String namespaceURI, String localName)

The below will work,

System.out.println(document.getElementsByTagNameNS("http://schemas.xmlsoap.org/soap/envelope/", "Envelope").getLength());

How do I convert a org.w3c.dom.Document object to a String?

If you are ok to do transformation, you may try this.

DocumentBuilderFactory domFact = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = domFact.newDocumentBuilder();
Document doc = builder.parse(st);
DOMSource domSource = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.transform(domSource, result);
System.out.println("XML IN String format is: \n" + writer.toString());

Converting a org.w3c.dom.Document in Java to String using Transformer

Here is Document converter which works fine for me

public String getStringFromDoc(Document doc) throws TransformerException {

        DOMSource domSource = new DOMSource(doc);
        StringWriter writer = new StringWriter();
        StreamResult result = new StreamResult(writer);
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer transformer = tf.newTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.transform(domSource, result);
        writer.flush();
        return writer.toString();
    }

Trying to parse an org.w3c.dom.Document XML Document in Java

public static void toOrderListFromXML() throws ParserConfigurationException, 
    SAXException, IOException {
        File fXmlFile = new File("test.xml");

        DocumentBuilderFactory dbFactory = 
   DocumentBuilderFactory.newInstance();
    DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
    org.w3c.dom.Document doc = dBuilder.parse(fXmlFile);

    doc.getDocumentElement().normalize();

    System.out.println("Root element :" + 
   doc.getDocumentElement().getNodeName());

    NodeList nList = doc.getElementsByTagName("string");

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

        Node nNode = nList.item(temp);

        System.out.println("\nCurrent Element :" + nNode.getNodeName());

        if (nNode.getNodeType() == Node.ELEMENT_NODE) {
            Element eElement = (Element) nNode;

            System.out.println("Order number: " + 
          eElement.getTextContent());
         }
     }
   }
 }

Then output will be

Root element :ArrayOfstring

Current Element :string
Order number: 6540321

Current Element :string
Order number: 6540322

Current Element :string
Order number: 6540323

Current Element :string
Order number: 6540324

Current Element :string
Order number: 6540325

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