Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.Attr;

import org.w3c.dom.Element;
import org.w3c.dom.Node;

public class Main {
    public static String getValueOfChildElementByLocalName(Element parentElem, String localName) {
        Element childElem = getChildElementByLocalName(parentElem, localName);
        return (childElem != null) ? getTextFromNode(childElem) : null;
    }

    public static Element getChildElementByLocalName(Element parentElem, String localName) {
        Node child = parentElem.getFirstChild();
        while (child != null) {
            if ((child.getNodeType() == Node.ELEMENT_NODE) && getLocalName(child).equals(localName)) {
                return (Element) child;
            }
            child = child.getNextSibling();
        }
        return null;
    }

    protected static void getTextFromNode(Node node, StringBuffer buffer, boolean addSpace) {
        switch (node.getNodeType()) {
        case Node.CDATA_SECTION_NODE:
        case Node.TEXT_NODE:
            buffer.append(node.getNodeValue());
            if (addSpace)
                buffer.append(" ");
        }
        Node child = node.getFirstChild();
        while (child != null) {
            getTextFromNode(child, buffer, addSpace);
            child = child.getNextSibling();
        }
    }

    public static String getTextFromNode(Node node, String defaultValue) {
        if (node == null) {
            return defaultValue;
        }
        if (node.getNodeType() == Node.ATTRIBUTE_NODE) {
            return ((Attr) node).getValue();
        } else if (node.getNodeType() == Node.TEXT_NODE) {
            return node.getNodeValue();
        } else {
            StringBuffer text = new StringBuffer();
            getTextFromNode(node, text, true);
            return text.toString().trim();
        }
    }

    public static String getTextFromNode(Node node) {
        return getTextFromNode(node, null);
    }

    public static String getLocalName(Node node) {
        if (node.getPrefix() == null)
            return node.getNodeName();
        else
            return node.getLocalName();
    }
}