Example usage for org.w3c.dom Element getElementsByTagName

Introduction

In this page you can find the example usage for org.w3c.dom Element getElementsByTagName.

Prototype

public NodeList getElementsByTagName(String name);

Source Link

Document

Returns a NodeList of all descendant Elements with a given tag name, in document order.

Usage

From source file:Main.java

/**
 * Gets the first child Element with a given name
 * /*from  ww w  .j a  va2s  .  c o  m*/
 * @param n
 *            the node get the children from
 * @param elementName
 *            the name of the child elements
 * @return the first child Element with a given name
 */
public static Element getElementByTagName(Element n, String elementName) {
    NodeList subNodes = n.getElementsByTagName(elementName);
    int sz = subNodes.getLength();
    if (sz > 0)
        return (Element) subNodes.item(0);
    return null;
}

From source file:Main.java

/**
 * Gets the value of a named child element.
 *
 * @param element The parent element./*from w  w w.ja  v  a  2  s  . c  o  m*/
 * @param name The name of the child element to retrieve the value from.
 * @return The text value of the child element.
 */
public static String getElementValue(Element element, String name) {
    return ((Element) element.getElementsByTagName(name).item(0)).getFirstChild().getNodeValue();
}

From source file:Main.java

static boolean hasChildNode(Element root, String childNodeName) {
    NodeList nl = root.getElementsByTagName(childNodeName);
    return (nl.getLength() > 0);
}

From source file:Main.java

/**
 * Gets the first child Element with a given name
 *
 * @param n the node get the children from
 * @param elementName the name of the child elements
 * @return the first child Element with a given name
 *//*from   w  w  w  .  ja v a 2 s. co m*/
public static Element getElementByTagName(Element n, String elementName) {
    NodeList subNodes = n.getElementsByTagName(elementName);
    int sz = subNodes.getLength();
    if (sz > 0) {
        return (Element) subNodes.item(0);
    }
    return null;
}

From source file:Main.java

public static Element getElement(Element root, String name) throws Exception {
    NodeList elements = root.getElementsByTagName(name);
    if (elements.getLength() > 0) {
        return (Element) elements.item(0);
    }//from ww w . j  a v  a2  s. c o m
    throw new Exception("Child element '" + name + "' to parent " + root.getNodeName() + " not found.");
}

From source file:Main.java

/**
 * This method is used to search all the <code>Element</code> objects with
 * given key in the passed <code>Element</code> object.
 * /*from w ww . j  a v  a  2  s . c  om*/
 * @param tagName
 *            Name of the tag as String.
 * @param input
 *            Element object.
 * @return <code>Element[]</code> Returns the array of elements, or an empty
 *         array in case here is no match.
 */
public static List<Element> getElements(String tagName, Element input) {
    NodeList nodes = input.getElementsByTagName(tagName);

    int len = nodes.getLength();
    List<Element> elt = new ArrayList<Element>(len);
    Node node;
    for (int i = 0; i < len; i++) {
        node = nodes.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            elt.add((Element) node);
        }
    }

    return elt;
}

From source file:Main.java

public static NodeList readXML(File xmlfile, String tag) throws Exception {
    NodeList list = null;/*from w  w w .ja v a2s.c o m*/
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(xmlfile);
    Element rootElement = doc.getDocumentElement();
    list = rootElement.getElementsByTagName(tag);

    return list;
}

From source file:TestDOM.java

public static Element getFirstElement(Element element, String name) {
    NodeList nl = element.getElementsByTagName(name);
    if (nl.getLength() < 1)
        throw new RuntimeException("Element: " + element + " does not contain: " + name);
    return (Element) nl.item(0);
}

From source file:Main.java

public static String getElementValue(Element parent, String label) {
    Element e = (Element) parent.getElementsByTagName(label).item(0);

    try {//from w  ww.ja v  a  2  s.c om
        Node child = e.getFirstChild();
        if (child instanceof CharacterData) {
            CharacterData cd = (CharacterData) child;
            return cd.getData();
        }
    } catch (Exception ex) {
    }
    return "";
}

From source file:Main.java

public static Node getNode(Node node, String nodeName) {
    if (node.getNodeType() == Node.ELEMENT_NODE) {

        Element el = (Element) node;
        NodeList nodeList = el.getElementsByTagName(nodeName);
        if (nodeList.getLength() > 0) {
            return nodeList.item(0);
        }//ww w.  j a  v  a 2 s.  c  o m

    }

    return null;
}