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<String> getGrandSonListValueByTagName(Element element, String parentName, String eleName) {

    NodeList nl = element.getElementsByTagName(parentName);
    if (null == nl) {
        return null;
    }//from  w w w  . j a  v a 2s.  c o  m
    Node item = nl.item(0);
    if (null == item) {
        return null;
    }
    NodeList subNodeList = item.getChildNodes();
    List<String> childEles = new ArrayList<String>();
    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(getTextValue((Element) node));
            }
        }
    }

    return childEles;
}

From source file:Main.java

/**
 * Determines if the specified Parent contains the specified Element
 * //from w  ww.  ja  v a  2s .co m
 * @param parent
 * @param elementName
 * @return true: if the Parent contains the Element, false: otherwise
 */
public static boolean contains(Element parent, String elementName) {
    boolean contains = false;

    NodeList nodes = parent.getElementsByTagName(elementName);
    if (nodes != null && nodes.getLength() > 0) {
        contains = true;
    }

    return contains;
}

From source file:Main.java

public static Element getChildElement(Element parent, String tagName, boolean required) {
    NodeList nodes = parent.getElementsByTagName(tagName);
    if (nodes == null || nodes.getLength() == 0) {
        if (required) {
            throw new IllegalStateException(String.format("Missing tag %s in element %s.", tagName, parent));
        } else {/*from   w  w  w. ja  v  a 2  s .  c o  m*/
            return null;
        }
    }
    return (Element) nodes.item(0);
}

From source file:Main.java

/**
 * Retrieve the value of an XML tag. For internal use only during parsing the accounts
 * configuration file./*from ww  w.  j a v  a  2 s . c  o m*/
 *
 * @param element The elemement containing the tag
 * @param tagName The string name of the tag
 * @return Tag value
 */
public static String getTagValue(Element element, String tagName) throws Exception {
    try {
        NodeList tagList = element.getElementsByTagName(tagName);
        Element tagElement = (Element) tagList.item(0);
        NodeList textTagList = tagElement.getChildNodes();

        return (textTagList.item(0)).getNodeValue().trim();
    } catch (Exception e) {
        throw new Exception(
                "Error in parsing the element \"" + element.toString() + "\" with the tag \"" + tagName + "\"");
    }
}

From source file:Main.java

public static String getTagValue(String sTag, Element eElement) {
    if (eElement == null) {
        return null;
    }// w ww  . j av a  2s .  co  m
    NodeList aNodeList = eElement.getElementsByTagName(sTag);
    if (aNodeList == null) {
        return null;
    }
    Node aNode = aNodeList.item(0);
    if (aNode == null) {
        return null;
    }
    NodeList nlList = aNode.getChildNodes();
    Node nValue = (Node) nlList.item(0);
    if (nValue == null) {
        return null;
    }
    return nValue.getNodeValue();
}

From source file:Utils.java

public static Element findElementElseCreateAndSet(Document document, Element parent, String child,
        String value) {//from   w  ww .j a  v  a2  s  .  co  m
    Element ret = null;
    NodeList nl = parent.getElementsByTagName(child);
    if (nl.getLength() == 0) {
        parent.appendChild(document.createElement(child));
        ret = (Element) parent.getElementsByTagName(child).item(0);
        ret.appendChild(document.createTextNode(value));
    }
    return ret;
}

From source file:Main.java

public static String getNamedElemValue(Element parent, String elementName) {
    String val = null;
    NodeList list = parent.getElementsByTagName(elementName);
    if (list.getLength() > 0) {
        val = ((Element) list.item(0)).getFirstChild().getNodeValue();
    }/*from   w ww  .jav  a  2  s .  c o m*/
    return val;
}

From source file:Main.java

static String getChildNodeValue(Element root, String childNodeName, String defaultValue) throws SAXException {
    NodeList nl = root.getElementsByTagName(childNodeName);
    if (nl.getLength() == 1) {
        return getTextValue(nl.item(0)).trim();
    } else if (defaultValue == null) {
        throw new SAXException("Node <" + root.getNodeName() + "> has no child named <" + childNodeName + ">");
    } else {//from   ww w . ja  va  2  s .com
        return defaultValue;
    }
}

From source file:Main.java

public static String[] getNodesValue(Element node, String nodeName) {
    List<String> ret = new ArrayList<String>();

    NodeList ndLs = node.getElementsByTagName(nodeName);
    for (int s = 0; s < ndLs.getLength(); s++) {
        Node fstNode = ndLs.item(s);
        if (fstNode.getNodeType() == Node.ELEMENT_NODE) {
            ret.add(fstNode.getTextContent());
        }//from ww  w .  java  2 s.  com
    }

    return ret.toArray(new String[0]);
}

From source file:Main.java

/**
 * Return an iterator for the subelements.
 * //from   w  w w .j a v a2 s .  c  o m
 * @return java.util.Iterator
 * @param element
 *            org.w3c.dom.Element
 * @param name
 *            java.lang.String
 */
public static Iterator<Node> getNodeIterator(Element element, String name) {
    List<Node> list = new ArrayList<Node>();
    NodeList nodeList = element.getElementsByTagName(name);

    int length = nodeList.getLength();
    for (int i = 0; i < length; i++)
        list.add(nodeList.item(i));

    return list.iterator();
}