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 Double get_double(Element element, String name) {
    Double d = null;//from www.  ja v a2 s  .  c om
    NodeList list = element.getElementsByTagName(name);
    if (list.getLength() > 0) {
        try {
            d = Double.valueOf(list.item(0).getTextContent());
        } catch (NumberFormatException e) {
            System.err.println(e);
            return null;
        }
    } else {
        System.err.println("No \"" + name + "\" defined");
        return null;
    }

    return d;
}

From source file:Main.java

/**
 * Checks whether given xml element contains a node of given name
 * @param ele xml element/*from w w w .j  a  v a 2  s .  c o m*/
 * @param tagName name of the node to be found
 * @return true if node is found under xml element, false if not
 */
public static boolean containsNode(Element ele, String tagName) {
    try {
        NodeList nl = ele.getElementsByTagName(tagName);
        if (nl != null && nl.getLength() > 0) {
            return true;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return false;
}

From source file:Main.java

public static String getTagValue(String sTag, Element eElement) {
    String ret = null;/*  w  w w.  ja v  a  2s . c o m*/

    try {
        NodeList nlList = eElement.getElementsByTagName(sTag).item(0).getChildNodes();
        Node nValue = (Node) nlList.item(0);
        ret = nValue.getNodeValue();
    } catch (NullPointerException e) {
        // System.t.println("Null pour l'item : " + sTag);
    }
    return ret;
}

From source file:Main.java

/**
 * A helper method for quick property saving/modification. If the property element does not exist, it is automatically created.
 *
 * @param element The parent element.//from   w  ww  .j a va 2  s.  c o m
 * @param name The property name.
 * @param value The property value
 * @return
 */
public static void quickPropertyWrite(Element element, String name, String value) {
    NodeList nodeList = element.getElementsByTagName(name);
    if (nodeList.getLength() == 1) {
        nodeList.item(0).setTextContent(value);
    } else {
        Element newProp = element.getOwnerDocument().createElement(name);
        newProp.setTextContent(value);
        element.appendChild(newProp);
    }
}

From source file:Main.java

/**
 * Gets the immediately child elements list from the parent element.
 *
 * @param parent/*  ww  w  . j  a  va2 s . com*/
 *          the parent element in the element tree
 * @param tagName
 *          the specified tag name
 * @return the NOT NULL immediately child elements list
 */
public static List<Element> getChildElements(Element parent, String tagName) {
    NodeList nodes = parent.getElementsByTagName(tagName);
    List<Element> elements = new ArrayList<>();

    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        if (node instanceof Element && node.getParentNode() == parent) {
            elements.add((Element) node);
        }
    }

    return elements;
}

From source file:Main.java

/**
 * get the value of an Attribute in the Xml Document.
 * finds the first occurance of the parent element and then searches its attributes
 * for the occurance of the attribute and retrieves its value.
 * @param root the root Element.//from w  w  w. j  a  v  a 2 s. co m
 * @param elemName the name of the element to search for.
 * @param att the name of the attribute  to search for.
 * @return String the attribute value or null if not found.
 */
public static String getElementAttribute(Element root, String elemName, String att) {
    NodeList nl = root.getElementsByTagName(elemName);
    if (null == nl) {
        return (null);
    }
    Node n = nl.item(0);
    if (null == n) {
        return (null);
    }
    NamedNodeMap attributes = n.getAttributes();
    if (null == attributes) {
        return (null);
    }
    n = attributes.getNamedItem(att);
    if (null == n) {
        return (null);
    }
    return (n.getNodeValue().trim());

}

From source file:Main.java

static public String getNodeValue(Element parent, String nodeName) {
    NodeList nodes = parent.getElementsByTagName(nodeName);
    if (nodes.getLength() == 0)
        throw new IllegalArgumentException("Cannot find node " + nodeName);
    Node textNode = nodes.item(0).getFirstChild();
    if (textNode != null)
        return (textNode.getNodeValue());
    else//from w  w  w .j a va2 s.  c o  m
        return ("");
}

From source file:Main.java

public static String getTagValue(Element root, String tagName) {
    String returnString = "";
    NodeList list = root.getElementsByTagName(tagName);
    for (int loop = 0; loop < list.getLength(); loop++) {
        Node node = list.item(loop);
        if (node != null) {
            Node child = node.getFirstChild();
            if ((child != null) && (child.getNodeValue() != null)) {
                return child.getNodeValue();
            }//from   w  w w.  j  a  va2 s. c  o m
        }
    }
    return returnString;
}

From source file:Main.java

public static ArrayList<String> getDatesArray(Document allDoc) {
    NodeList nodes = allDoc.getElementsByTagName("day");
    ArrayList<String> datesArray = new ArrayList<String>();

    for (int i = 0; i < nodes.getLength(); i++) {
        Element element = (Element) nodes.item(i);
        NodeList datesNodes = element.getElementsByTagName("date");

        Element line = (Element) datesNodes.item(0);

        datesArray.add(getCharacterDataFromElement(line).trim());//gotta trim...or you can't see shiat
    }//from w w w.j av a2 s  .  com

    return datesArray;
}

From source file:Main.java

public static Element getElement(Element parentElement, String nodeName, String id) {
    NodeList nodeList = parentElement.getElementsByTagName(nodeName);
    int i;/*www.j  a  va  2  s.  c o m*/
    for (i = 0; i < nodeList.getLength(); i++) {
        Node node = nodeList.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            Element element = (Element) node;
            if (id.equals(element.getAttribute(idName))) {
                return element;
            }
        }
    }
    return null;
}