Get String from Element and Node - Java XML

Java examples for XML:DOM Node Value

  1. HOME
  2. Java
  3. XML
  4. DOM Node Value

Description

Get String from Element and Node

Demo Code


import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class XMLHelper {

    private static XMLHelper instance = null;

    private XMLHelper() {
    }/*from   ww  w .  j a  v a  2s  . c  o m*/

    public static synchronized XMLHelper getInstance() {
        if (instance == null) {
            instance = new XMLHelper();
        }
        return instance;
    }

    public int getAttributeIntValue(Element element, String attributeKey) {
        String rawData = getAttributeValue(element, attributeKey);
        try {
            return Integer.parseInt(rawData);
        } catch (Exception e) {
            // TODO: handle exception
        }
        return 0;
    }

    public String getAttributeValue(Element element, String attributeKey) {
        NamedNodeMap attributeMap = element.getAttributes();
        return attributeMap.getNamedItem(attributeKey).getNodeValue();
    }

    public String getElementValue(Element element, String tag) {
        Node aNode = element.getElementsByTagName(tag).item(0);
        if (aNode == null)
            return "";
        NodeList nodes = aNode.getChildNodes();
        Node node = (Node) nodes.item(0);
        if (node == null)
            return "";
        return node.getNodeValue();
    }

    public void addAttribute(Document doc, Element element, String key,
            String value) {
        Attr attr = doc.createAttribute(key);
        attr.setValue(value);
        element.setAttributeNode(attr);
    }

    public void addSubElement(Document doc, Element parent, String key,
            String value) {
        Element element = doc.createElement(key);
        element.setTextContent(value);
        parent.appendChild(element);
    }

}

Related Tutorials