Java XML Node Value getNodeValue(Node node)

Description

Gets the text value of a node.

License

Apache License

Parameter

Parameter	Description
node	Node to check

Return

The text value or null if the node has no text value, has no children or it's child has not text value or if the text value is empty.
Any spaces are trimmed from the value.

Declaration

public static String getNodeValue(Node node)

Method Source Code

//package com.java2s;
/*/*w w w  .j  a v  a  2  s.c  o m*/
 *   Copyright 2007 skynamics AG
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

import org.w3c.dom.Node;

public class Main {
    /**
     * Gets the text value of a node.
     * First, the node is checked if has a text value itself.
     * If not, the method tries to retrieve a value from the child node of the node.
     *
     * @param node Node to check
     * @return The text value or null if the node has no text value, has no children or
     * it's child has not text value or if the text value is empty.<br>
     * Any spaces are trimmed from the value.
     */
    public static String getNodeValue(Node node) {
        String value = null;

        if (node != null) {
            value = node.getNodeValue();
            if (value == null) {
                // Not a text node, check the child node
                Node child = node.getFirstChild();
                if (child != null)
                    value = child.getNodeValue();
            }

            if (value != null) {
                value = value.trim();
                if (value.length() == 0)
                    value = null;
            }
        }

        return value;
    }
}