Example usage for org.w3c.dom Document getElementsByTagName

Introduction

In this page you can find the example usage for org.w3c.dom Document getElementsByTagName.

Prototype

public NodeList getElementsByTagName(String tagname);

Source Link

Document

Returns a NodeList of all the Elements in document order with a given tag name and are contained in the document.

Usage

From source file:Main.java

/**
 * This method returns the first element from the document.
 * @param document The document.//from   w w  w  .  java  2  s .  c  o  m
 * @param tagName The element name.
 * @return The element object.
 */
public static Element getFirstElement(Document document, String tagName) {
    NodeList nodes = document.getElementsByTagName(tagName);
    if (nodes != null && nodes.getLength() != 0) {
        return (Element) nodes.item(0);
    } else {
        return null;
    }
}

From source file:Main.java

public static Object getBean() {
    try {//from  w w w . j  a  v  a2  s.co m
        DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = dFactory.newDocumentBuilder();
        Document document;
        document = builder.parse(new File("config.xml"));

        NodeList nl = document.getElementsByTagName("TemplateClassName");

        Node classNode = nl.item(0).getFirstChild();
        String cName = classNode.getNodeValue();

        System.out.println(cName);
        Class c = Class.forName("com.seven.templatemethod.one." + cName);
        Object object = c.newInstance();
        return object;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static NodeList getDomNodes(String file, String xmlTag) {
    NodeList nodes = null;/*from   w  ww  . j  av  a2  s. com*/

    try {
        File xml = new File(file);
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(xml);
        doc.getDocumentElement().normalize();

        nodes = doc.getElementsByTagName(xmlTag);
    } catch (Exception e) {
        e.printStackTrace();
        nodes = null;
    }

    logger.trace("Returning {} nodes", nodes.getLength());
    return nodes;
}

From source file:Main.java

/**
 * Determines if the specified Document (DOM Tree) contains the specified Element
 * /*from   w w w . j av  a2 s . c o  m*/
 * @param document
 * @param elementName
 * @return true: if the Document(DOM Tree) contains the Element, false: otherwise
 */
public static boolean contains(Document document, String elementName) {
    boolean contains = false;

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

    return contains;
}

From source file:Main.java

/**
 * Check to see if a node exists in the document with the node name passed in.
 * //w w w  . j av a  2s .c om
 * @param doc
 * @param nodeName
 * @return true if it exists
 */
public static boolean getNodeExists(Document doc, String nodeName) {
    if (doc == null || nodeName == null)
        return false;
    NodeList nodes = doc.getElementsByTagName(nodeName);
    if (nodes == null)
        return false;
    return nodes.getLength() > 0;
}

From source file:Main.java

public static NodeList getXMLNodes(final String xmlFileName, final String tagName) {
    NodeList nList = null;/*w w  w  . j a  v a2 s.c  o  m*/
    try {
        File xmlFile = new File(xmlFileName);
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(xmlFile);
        doc.getDocumentElement().normalize();
        nList = doc.getElementsByTagName(tagName);
    } catch (Exception e) {
        e.printStackTrace();
    }

    return nList;
}

From source file:Main.java

/**
 * Return all values associated with attributeName inside element specified by tag
 * @param document doc we work with/*from   w  ww. ja  v  a 2s.c  o m*/
 * @param elementTag element containing desired attribute
 * @param attributeName name of attribute
 * @return List of values specified in XML array
 */
public static List<String> getListOfTagAttributeValues(Document document, String elementTag,
        String attributeName) {
    NodeList usesPermissionList = document.getElementsByTagName(elementTag);

    List<String> result = new ArrayList<String>();
    for (int i = 0; i < usesPermissionList.getLength(); i++) {
        Node nNode = usesPermissionList.item(i);
        if (nNode.getNodeType() == Node.ELEMENT_NODE) {
            Element eElement = (Element) nNode;
            String value = eElement.getAttribute(attributeName);
            if (value != null && !value.isEmpty()) {
                result.add(value);
            }
        }
    }
    return result;
}

From source file:Main.java

/**
 * Creates an empty node list. Creates an empty document then selects nodes
 * using a random UUID to ensure an empty result.
 *
 * @return an empty Node list//  www .  ja v  a2  s  .  c o  m
 */
public static NodeList createEmptyNodeList() {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder;
    try {
        builder = dbf.newDocumentBuilder();
    } catch (ParserConfigurationException e) {
        throw new IllegalStateException("Problem creating document", e);
    }
    Document document = builder.newDocument();
    assert document != null;

    final NodeList emptyNodesList = document.getElementsByTagName(UUID.randomUUID().toString());
    return emptyNodesList;
}

From source file:Main.java

public static Element getFirstElementByTagName(Document document, String tag) {
    // Get all elements matching the tagname
    NodeList nodeList = document.getElementsByTagName(tag);
    if (nodeList == null) {
        p("no list of elements with tag=" + tag);
        return null;
    }/*from  www. j a  va  2  s  .co m*/

    // Get the first if any.
    Element element = (Element) nodeList.item(0);
    if (element == null) {
        p("no element for tag=" + tag);
        return null;
    }
    return element;
}

From source file:Main.java

/**
 * Method to check difference between actual time and saved time in xml file.
 * /*  w ww.j a v  a2 s . c o  m*/
 * @param target document
 * @return time difference as integer
 * @throws ParseException
 */
public static int checkDateDifference(Document target) throws ParseException {
    int diff = 0;
    NodeList parents = target.getElementsByTagName("g:options");
    Element parent = (Element) parents.item(0); //g:options - only 1 element
    DateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.ENGLISH);
    //date xml
    String time = parent.getAttribute("time");
    Date oldT = format.parse(time);
    //date now
    Date newT = new Date();
    //compare
    diff = (int) ((newT.getTime() - oldT.getTime()) / 1000);
    return diff;
}