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

public static List<Node> getGrandSonElementsByTagName(Element ele, String parentName, String eleName) {

    NodeList nl = ele.getElementsByTagName(parentName);
    if (null == nl) {
        return null;
    }/* www  . j ava 2 s  . c o m*/
    Node item = nl.item(0);
    if (null == item) {
        return null;
    }
    NodeList subNodeList = item.getChildNodes();
    List<Node> childEles = new ArrayList<Node>();
    Node node = null;
    for (int i = 0; i < subNodeList.getLength(); i++) {
        node = subNodeList.item(i);

        if (node != null) {
            if (node instanceof Element && eleName.equals(node.getNodeName())
                    || eleName.equals(node.getLocalName())) {
                childEles.add(node);
            }
        }
    }

    return childEles;
}

From source file:Main.java

public static String getStringNodeValue(Node node, String nodeName) {
    Element fstElmnt = (Element) node;
    NodeList fstNmElmntLst = fstElmnt.getElementsByTagName(nodeName);

    if (fstNmElmntLst.getLength() == 0)
        return "";

    Element fstNmElmnt = (Element) fstNmElmntLst.item(0);
    NodeList fstNm = fstNmElmnt.getChildNodes();

    if (fstNm.getLength() > 0) {
        String retValue = ((Node) fstNm.item(0)).getNodeValue();
        try {//from   w w  w.  j av a2s  . co m
            return new String(retValue.getBytes("ISO-8859-1"));
        } catch (UnsupportedEncodingException e) {
        }
    }
    return "";
}

From source file:Main.java

/**
 * Gets an element from the XML/*www  .  j  a va 2  s. com*/
 * 
 * @param elementTag
 * @param fromElement
 * @return
 */
public static Element getElement(String elementTag, Element fromElement) {
    Element element = null;
    NodeList nodeList = fromElement.getElementsByTagName(elementTag);
    if (nodeList.getLength() > 0) {
        Node node = nodeList.item(0);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            element = (Element) node;
        }
    }
    return element;
}

From source file:Main.java

/**
 * Return content of child element with given tag name.
 * If more than one children with this name are present, the content of the last
 * element is returned./*  w w w .j a v  a2  s  .c  om*/
 *
 * @param elem
 * @param childTagName
 * @return content of child element or null if no child element with this name was found
 */
public static String getChildText(Element elem, String childTagName) {
    NodeList nodeList = elem.getElementsByTagName(childTagName);
    int len = nodeList.getLength();
    if (len == 0) {
        return null;
    }

    return getElementText((Element) nodeList.item(len - 1));

}

From source file:Main.java

public static String[] getElementsByTagNameArray(String sTag, Element eElement) {
    String[] array = new String[0];
    NodeList nlList = eElement.getElementsByTagName(sTag);
    if (nlList != null && nlList.item(0) != null) {
        NodeList nodes = nlList.item(0).getChildNodes();
        array = new String[nodes.getLength()];
        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);
            array[i] = node.getTextContent();
        }/*from ww  w .  j  av  a  2  s. co m*/
    }
    return array;
}

From source file:Main.java

/**
 * Get the first instance of an element by name.
 * //  www .j a  va2 s .c  o  m
 * @param parent
 *            The parent to get the element from.
 * @param elementName
 *            The name of the element to look for.
 * @return The element or null if it is not found.
 */
public static Element getElement(Element parent, String elementName) {
    Element retval = null;
    final NodeList children = parent.getElementsByTagName(elementName);
    if (children.getLength() > 0) {
        retval = (Element) children.item(0);
    }
    return retval;
}

From source file:Main.java

public static Vector getElementsByAttribValue(org.w3c.dom.Element element, String attrib, String val) {
    NodeList desElements = element.getElementsByTagName("*");
    Vector selElements = new Vector(desElements.getLength() / 10, 10);

    for (int i = 0; i < desElements.getLength(); i++) {
        org.w3c.dom.Node desElement = desElements.item(i);

        if (desElement.getNodeType() == org.w3c.dom.Element.ELEMENT_NODE) {
            NamedNodeMap attributeNodes = desElement.getAttributes();

            org.w3c.dom.Node selAttribNode = attributeNodes.getNamedItem(attrib);

            if (selAttribNode != null && selAttribNode.getNodeValue().equalsIgnoreCase(val)) {
                selElements.add(desElement);
            }//from w ww  . ja va 2 s.com
        }
    }

    return selElements;
}

From source file:Main.java

public static List elements(Element element, String tagName) {
    NodeList nodeList = element.getElementsByTagName(tagName);
    List elements = new ArrayList(nodeList.getLength());
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node child = nodeList.item(i);
        if (child.getParentNode() == element) {
            elements.add(child);/*from w  ww . ja  v  a 2 s.  c  om*/
        }
    }
    return elements;
}

From source file:Main.java

/**
 * Method t o return a single first Element with a specific attribute value. 
 * (maybe you can find a better method))
 * @param tagName string of the name tag xml.
 * @param nameAttribute string of the name attribute xml.
 * @return the element xml with the specific attribute.
 *//* w  w  w.ja v a  2 s  .  c  om*/
public static Element selectFirstElementByAttribute(String tagName, String nameAttribute) {
    Element el = doc.getDocumentElement(); //get root element
    NodeList elementList = el.getElementsByTagName(tagName);
    for (int i = 0; i < elementList.getLength(); i++) {
        if (getAttribute((Element) elementList.item(i), nameAttribute) != null) {
            el = (Element) elementList.item(i);
            break;
        }
    }
    return el;
}

From source file:Main.java

/**
 * I take a xml element and the tag name, look for the tag and get
 * the text content /*  www.ja  va 2s. c  o  m*/
 * i.e for <employee><name>John</name></employee> xml snippet if
 * the Element points to employee node and tagName is name I will return John  
 * @param ele
 * @param tagName
 * @return
 */
public static String getTextValue(Element ele, String tagName) {
    String textVal = null;
    NodeList nl = ele.getElementsByTagName(tagName);
    if (nl != null && nl.getLength() > 0) {
        Element el = (Element) nl.item(0);
        textVal = el.getFirstChild().getNodeValue();
        if (textVal != null) {
            textVal = textVal.trim();
        }
    }

    return textVal;
}