Java XML Node Value getNodeValue(Node aNode)

Description

------------------------------------------------------------ Gets the String value of a node.

License

Open Source License

Parameter

Parameter	Description
aNode	Parent to search (should be the document root)

Return

Returns the value of the node --------------------------------------------------------------

Declaration

public static String getNodeValue(Node aNode)

Method Source Code

//package com.java2s;
/*/*w  w w  .j  ava 2 s . c om*/
 * Copyright (c) 2010 The Regents of the University of California.
 * All rights reserved.
 *
 * '$Author: welker $'
 * '$Date: 2010-05-05 22:21:26 -0700 (Wed, 05 May 2010) $' 
 * '$Revision: 24234 $'
 * 
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and its documentation for any purpose, provided that the above
 * copyright notice and the following two paragraphs appear in all copies
 * of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
 * ENHANCEMENTS, OR MODIFICATIONS.
 *
 */

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * ------------------------------------------------------------ Gets the
     * String value of a node. First checks it's value and if that is null then
     * it checks to see if it has a child node and gets the value of the first
     * child. Assumption: That the first child is a #text node, delibertly NOT
     * checking the first node's type
     * 
     * @param aNode
     *            Parent to search (should be the document root)
     * @return Returns the value of the node
     *         --------------------------------------------------------------
     */
    public static String getNodeValue(Node aNode) {
        String value = null;
        if (aNode.getNodeValue() != null) {
            value = aNode.getNodeValue() != null ? aNode.getNodeValue()
                    .trim() : null;
        } else {
            NodeList list = aNode.getChildNodes();
            if (list.getLength() == 1) {
                Node child = list.item(0);
                if (child != null) {
                    value = child.getNodeValue() != null ? child
                            .getNodeValue().trim() : null;
                }
            }
        }
        return value;
    }
}