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

private static String getTextValue(String def, Element doc, String tag) {
    String value = def;//from  www .j a  v a  2  s  .c om
    NodeList noteList = doc.getElementsByTagName(tag);
    if (noteList.getLength() > 0) {
        for (int i = 0; i < noteList.getLength(); i++) {
            Node note = noteList.item(i);

            Element noteElement = (Element) note;
            if (noteElement.getNodeType() == Node.ELEMENT_NODE) {
                if (noteElement.getElementsByTagName("pitch").getLength() > 0) {
                    Element pitchElement = (Element) noteElement.getElementsByTagName("pitch").item(0);
                    System.out.println("Staff idX : "
                            + pitchElement.getElementsByTagName("step").item(0).getTextContent());
                } else {
                    System.out.println("yoktir");
                }
            } else {
                System.out.println("not element");
            }
        }

        //          value = nl.item(0).getFirstChild().getNodeValue();
    }
    return value;
}

From source file:Main.java

/**
 * This methods extracts the text for a named element under the
 * <code>root</code>. For the moment it uses only the first text node,
 * and only the first element of that type.
 *
 * @param root    The element is contained within this root.
 * @param tagname The elemet name to search for
 * @return The text under the tag, or <code>null</code> if it is not found
 *         or an error occured./*from   ww w.  ja  va 2  s . com*/
 */
public static String getElementText(Element root, String tagname) {
    NodeList nameList = root.getElementsByTagName(tagname);

    if (nameList.getLength() > 0) {
        Node text = nameList.item(0).getFirstChild();

        // Find the first text node
        while ((text != null) && !(text instanceof Text)) {
            text = text.getNextSibling();
        }

        if (text == null) {
            return null;
        } else {
            try {
                return text.getNodeValue();
            } catch (DOMException de) {
                return null;
            }
        }
    } else {
        return null;
    }
}

From source file:Main.java

/**
 * Return list of content Strings of all child elements with given tag name.
 * @param elem//ww w.  java  2 s. c om
 * @param childTagName
 * @return List 
 */
public static List getChildTextList(Element elem, String childTagName) {
    NodeList nodeList = elem.getElementsByTagName(childTagName);
    int len = nodeList.getLength();
    if (len == 0) {
        return Collections.EMPTY_LIST;
    } else {
        List list = new ArrayList(len);
        for (int i = 0; i < len; i++) {
            list.add(getElementText((Element) nodeList.item(i)));
        }
        return list;
    }
}

From source file:Main.java

public static String getElementValue(String elementName, Element element) throws Exception {
    String value = null;//from   w  w  w . j a v  a  2 s .  co m
    NodeList childNodes = element.getElementsByTagName(elementName);
    Element cn = (Element) childNodes.item(0);
    value = cn.getFirstChild().getNodeValue().trim();
    //value = childNodes.item(0).getNodeValue().trim();
    if (value == null) {
        throw new Exception("No element found with given name:" + elementName);
    }
    return value;
}

From source file:Main.java

/**
 * @deprecated use getXPath instead!/*from   w w  w. ja  v a2s.c o  m*/
 */
@Deprecated
public static Element getElementByAttribute(Element root, String tagname, String attribute, String att_value) {
    NodeList nl = root.getElementsByTagName(tagname);
    for (int i = 0; i < nl.getLength(); i++) {
        Element elem = (Element) nl.item(i);
        if (elem.getAttribute(attribute).equals(att_value)) {
            return elem;
        }
    }
    return null;
}

From source file:Main.java

/**
 * Gets the text value of the specified element.
 * //from w ww . j ava2s .c o  m
 * @param root
 *            the root of the element whose text is to be retrieved; assumed
 *            not to be <code>null</code>.
 * @param elementName
 *            the name of the element whose text is to be retrieved.
 * 
 * @return the retrieved text value of the specified element or null if root
 *         has no given element.
 */
public static String getElementData(final Element root, final String elementName) {
    NodeList nodes = root.getElementsByTagName(elementName);
    if (nodes.getLength() < 1) {
        return null;
    }

    return getElementData(nodes.item(0));
}

From source file:Main.java

/** Helper method - gets a named element's values as an array of <I>String</I>
objects.//from   w  w  w .  ja  v a 2 s. c o  m
   @param pElement The parent <I>Element</I>.
   @param strName Name of the element.
   @return Array of <I>String</I> objects representing the values
  of the child elements.
 */
public static String[] getElementStrings(Element pElement, String strName) {
    NodeList pNodeList = pElement.getElementsByTagName(strName);

    if (null == pNodeList)
        return null;

    int nLength = pNodeList.getLength();

    if (0 == nLength)
        return null;

    String[] strReturn = new String[nLength];

    for (int i = 0; i < nLength; i++)
        strReturn[i] = getNodeText(pNodeList.item(i));

    return strReturn;
}

From source file:Main.java

public static String getValue(Element item, String tag) {
    String textValue = null;//from ww  w .j a  v a 2 s .  c  o  m

    NodeList nodes = item.getElementsByTagName(tag);
    if (nodes != null && nodes.getLength() > 0) {
        Element element = (Element) nodes.item(0);

        Node node = element.getFirstChild();

        if (node != null) {
            textValue = node.getNodeValue();
        }
    }

    return textValue;
}

From source file:Main.java

/** Returns all 'subElement' of 'node'. */
public static List<Element> findAll(Element node, String subElement) {
    if (node != null) {
        NodeList nl = node.getElementsByTagName(subElement);
        if (nl != null && nl.getLength() > 0) {
            int n = nl.getLength();
            ArrayList<Element> ans = new ArrayList<Element>(n);
            for (int i = 0; i < n; ++i)
                ans.add((Element) nl.item(i));
            return ans;
        }/*w  w w .  j  av  a 2s .c  o  m*/
    }
    return java.util.Collections.<Element>emptyList();
}

From source file:Main.java

/**
 * Helper function for quickly retrieving a String value of a given
 * XML element./*from   w w w  . j  a  va  2 s .c om*/
 * @param ele The document element from which to pull the String value.
 * @param tagName The name of the node.
 * @return The String value of the given node in the element passed in.
 */
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);
        if (el.getFirstChild() != null) {
            textVal = el.getFirstChild().getNodeValue();
        } else {
            textVal = "";
        }
    }
    return decode(textVal);
}