Example usage for org.w3c.dom Document getDocumentElement

Introduction

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

Prototype

public Element getDocumentElement();

Source Link

Document

This is a convenience attribute that allows direct access to the child node that is the document element of the document.

Usage

From source file:Main.java

/**
 * Creates W3C DOM Document object from XML file
 * @param filePath path to xml file including file name and extension
 *///from  w  w  w .  ja  va 2s .  co m
public static Document parseXml(String filePath) {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    try {
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(filePath);
        doc.getDocumentElement().normalize();
        return doc;
    } catch (ParserConfigurationException pce) {
        pce.printStackTrace();
        return null;
    } catch (SAXException se) {
        se.printStackTrace();
        return null;
    } catch (IOException ioe) {
        //ioe.printStackTrace();
        String toRemove = File.separator + "WebApp" + File.separator;
        Document doc;
        try {
            DocumentBuilder db = dbf.newDocumentBuilder();
            doc = db.parse(filePath.replace(toRemove, File.separator));
            doc.getDocumentElement().normalize();
            return doc;
        } catch (SAXException saxex) {
            saxex.printStackTrace();
            return null;
        } catch (ParserConfigurationException pcex) {
            pcex.printStackTrace();
            return null;
        } catch (IOException ioex) {
            ioex.printStackTrace();
            return null;
        }
    }
}

From source file:Main.java

@Nullable
public static Element getDocumentElement(@Nullable final Node aNode) {
    final Document aDoc = getOwnerDocument(aNode);
    return aDoc == null ? null : aDoc.getDocumentElement();
}

From source file:Main.java

/**
 * Check that the name of root element of the given {@code document} matches the given {@code expectedRootElementName}
 *
 * @param document/* w w  w .ja  va 2  s. c om*/
 * @param expectedRootElementName
 */
public static void checkRootElement(@Nonnull Document document, @Nullable String expectedRootElementName) {
    if (document.getDocumentElement() == null || expectedRootElementName == null) {
        return;
    } else if (!expectedRootElementName.equals(document.getDocumentElement().getNodeName())) {
        throw new IllegalStateException("Invalid root element '" + document.getDocumentElement().getNodeName()
                + "', expected '" + expectedRootElementName + "'");

    }
}

From source file:Main.java

/**
 * @param doc/*  www. j ava  2  s .c  o m*/
 * @return
 */
public static Element getImplicitElementFromDoc(Document doc) {
    // FIXME: Handle "first topic child of root" rule for non-topic elements.
    return doc.getDocumentElement();
}

From source file:Main.java

/**
 * get first "real" element (ie not the document-rootelement, but the next one
 *//*from   www.j  a  va 2s. c om*/
public static Element getFirstElement(Document document) {
    Element workelement = null;

    if (document.getDocumentElement() != null) {
        org.w3c.dom.Node tmp = document.getDocumentElement().getFirstChild();

        while (tmp != null) {
            tmp = tmp.getNextSibling();

            if (tmp.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE) {
                workelement = (Element) tmp;

                break;
            }
        }
    }

    return workelement;
}

From source file:Main.java

public static String readProjectName(String file) throws Exception {
    DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();
    DocumentBuilder dombuilder = domfac.newDocumentBuilder();
    InputStream is = new FileInputStream(file);
    Document doc = dombuilder.parse(is);
    Element root = doc.getDocumentElement();
    NodeList prjInfo = root.getChildNodes();
    if (prjInfo != null) {
        for (int i = 0; i < prjInfo.getLength(); i++) {
            Node project = prjInfo.item(i);
            if (project.getNodeType() == Node.ELEMENT_NODE) {
                String strProject = project.getNodeName();
                if (strProject.equals("project")) {
                    for (Node node = project.getFirstChild(); node != null; node = node.getNextSibling()) {
                        if (node.getNodeType() == Node.ELEMENT_NODE) {
                            String strNodeName = node.getNodeName();
                            if (strNodeName.equals("name")) {
                                return node.getTextContent();
                            }/*from   w  w w  . ja  va 2 s  .c  om*/
                        }
                    }
                }
            }

        }
    }
    return "";
}

From source file:Main.java

/**
 * Converts a String representing an XML snippet into an {@link org.w3c.dom.Element}.
 *
 * @param xml snippet as a string/*from ww w . jav a  2s . co m*/
 *
 * @return a DOM Element
 *
 * @throws Exception if unable to parse the String or if it doesn't contain valid XML.
 */
public static Element elementFromString(String xml) throws Exception {
    ByteArrayInputStream bais = new ByteArrayInputStream(xml.getBytes("UTF-8"));
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document document = builder.parse(bais);
    bais.close();
    return document.getDocumentElement();
}

From source file:Main.java

public static String getValue(Document doc, String tagName) {
    return getValue(doc.getDocumentElement(), tagName);
}

From source file:Main.java

/**
 * @param target/* w  w w.  j av  a2s.  com*/
 * @param node
 * @return
 * @throws Exception
 */
public static Document copyDocument(Document document) throws Exception {
    Node n = document.getDocumentElement().cloneNode(true);
    Document result = newDocument();
    result.adoptNode(n);
    result.appendChild(n);
    return result;
}

From source file:Main.java

public static String documentToString(Document document) throws TransformerException {
    Node rootNode = (Node) document.getDocumentElement();
    Source source = new DOMSource(rootNode);

    StringWriter stringWriter = new StringWriter();
    Result result = new StreamResult(stringWriter);
    TransformerFactory factory = TransformerFactory.newInstance();
    Transformer transformer = factory.newTransformer();
    transformer.transform(source, result);

    return stringWriter.getBuffer().toString().replace("\n", "");
}