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 String getSubTagValue(Element root, String tagName, String subTagName) {
    String returnString = "";
    NodeList list = root.getElementsByTagName(tagName);
    for (int loop = 0; loop < list.getLength(); loop++) {
        Node node = list.item(loop);
        if (node != null) {
            NodeList children = node.getChildNodes();
            for (int innerLoop = 0; innerLoop < children.getLength(); innerLoop++) {
                Node child = children.item(innerLoop);
                if ((child != null) && (child.getNodeName() != null)
                        && child.getNodeName().equals(subTagName)) {
                    Node grandChild = child.getFirstChild();
                    if (grandChild.getNodeValue() != null)
                        return grandChild.getNodeValue();
                }//from   ww w . java  2  s. co m
            } // end inner loop
        }
    }
    return returnString;
}

From source file:Main.java

public static String getValue(Element e, String tagName) {
    try {/*from  w  w w.  j  a v  a 2 s . c  om*/
        // get node lists of a tag name from a Element
        NodeList elements = e.getElementsByTagName(tagName);

        if (elements.getLength() == 0) {
            return null;
        }
        Node node = elements.item(0);
        return node.getTextContent();

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static String getSubTagAttribute(Element root, String tagName, String subTagName, String attribute) {
    String returnString = "";
    NodeList list = root.getElementsByTagName(tagName);
    for (int loop = 0; loop < list.getLength(); loop++) {
        Node node = list.item(loop);
        if (node != null) {
            NodeList children = node.getChildNodes();
            for (int innerLoop = 0; innerLoop < children.getLength(); innerLoop++) {
                Node child = children.item(innerLoop);
                if ((child != null) && (child.getNodeName() != null)
                        && child.getNodeName().equals(subTagName)) {
                    if (child instanceof Element) {
                        return ((Element) child).getAttribute(attribute);
                    }//w w w  .java  2  s  .com
                }
            } // end inner loop
        }
    }
    return returnString;
}

From source file:Main.java

public static String getSubTagValue(Element root, String tagName, String subTagName) {
    String returnString = "";
    NodeList list = root.getElementsByTagName(tagName);
    for (int loop = 0; loop < list.getLength(); loop++) {
        Node node = list.item(loop);
        if (node != null) {
            NodeList children = node.getChildNodes();
            for (int innerLoop = 0; innerLoop < children.getLength(); innerLoop++) {
                Node child = children.item(innerLoop);
                if ((child != null) && (child.getNodeName() != null)
                        && (child.getNodeName().equals(subTagName))) {
                    Node grandChild = child.getFirstChild();
                    if (grandChild.getNodeValue() != null) {
                        return grandChild.getNodeValue();
                    }// w  w  w  .ja va2  s. c om
                }
            }
        }
    }
    return returnString;
}

From source file:Utils.java

public static Element findElementElseCreateAndAttribute(Document document, Element parent, String element,
        String attributeName, String attributeValue) {
    NodeList nl = parent.getElementsByTagName(element);
    Element e = null;// w w w  . java 2 s  . c  o  m

    if (nl.getLength() == 0) {
        parent.appendChild(document.createElement(element));
        e = (Element) parent.getElementsByTagName(element).item(0);
        e.setAttribute(attributeName, attributeValue);
    }

    return e;
}

From source file:Main.java

public static List getChildElements(Element p_rootElement, String p_elementName) {
    List result = new ArrayList();
    NodeList nodeList = p_rootElement.getElementsByTagName(p_elementName);
    for (int i = 0; i < nodeList.getLength(); i++) {
        Element elem = (Element) nodeList.item(i);
        result.add(elem);/*from  w w  w . jav a 2 s .c o  m*/
    }
    return result;
}

From source file:Main.java

/**
 * Returns an array of strings representing filtered values for provided
 * attribute prefixed by 2 levels of parents, based on a parent node (e.g.:
 * parenetNodeAtrValue.childNodeAtrValue.childNodeAtrValue)
 * @param parent//from  www .  j  av a  2s  .  co m
 * @param atrName
 * @return
 */
protected static ArrayList<String> getFilteredValuesWithParentForAttribute(Element parent, String atrName) {
    try {
        NodeList childNodes = parent.getElementsByTagName("*");
        return getValuesWithParentForAttribute(atrName, childNodes);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

/**
 * find element with tagName whose id tag is 'idTagName' and id value is 'id_value'
 *
 * @param root/* w  ww .j a v a2 s  . c  o m*/
 */
public static Element findElement(final String idValue, final String idTagName, final String tagName,
        final Element root) {
    String textVal = null;
    final NodeList nl = root.getElementsByTagName(tagName);
    if (nl != null && nl.getLength() > 0) {
        // iterate over these
        for (int i = 0; i < nl.getLength(); i++) {
            final Element ei = (Element) nl.item(i);
            final NodeList n2 = ei.getElementsByTagName(idTagName);
            if (n2 != null && n2.getLength() > 0) {
                for (int j = 0; j < n2.getLength(); j++) {
                    textVal = getElementValue((Element) n2.item(j));
                    if (textVal.equals(idValue)) {
                        return ei;
                    }
                }
            }
        }
    }
    return null;
}

From source file:net.ftb.data.news.RSSReader.java

private static String getTextValue(Element doc, String tag) {
    String value = "";
    NodeList nl;//from w  w w . ja  v  a2  s  .  c o m
    nl = doc.getElementsByTagName(tag);
    if (nl.getLength() > 0 && nl.item(0).hasChildNodes()) {
        value = nl.item(0).getFirstChild().getNodeValue();
    }
    return value;
}

From source file:Main.java

/**
 * Returns a child element with a given name from an XML element
 * //from w w  w.j a  v  a2  s . co m
 * @param element
 *            A Element
 * @param tagName
 *            The name of the child element
 * @return The child element or <code>null</code> if no such child exists
 */
public static Element getChildElement(Element element, String tagName) {
    if (element == null)
        return null;
    NodeList list = element.getElementsByTagName(tagName);
    if (list != null && list.getLength() > 0) {
        return (Element) list.item(0);
    }
    return null;
}