Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import org.w3c.dom.CharacterData;
import org.w3c.dom.Comment;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.EntityReference;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {

    public static String getElementValueByTagName(Document doc, String parentName, String eleName) {

        NodeList nl = doc.getElementsByTagName(parentName);
        if (null == nl) {
            return null;
        }
        Node item = nl.item(0);
        return getChildElementValueByTagName((Element) item, eleName);
    }

    public static String getChildElementValueByTagName(Element ele, String childEleName) {

        Element child = getChildElementByTagName(ele, childEleName);
        return (child != null ? getTextValue(child) : null);
    }

    public static Element getChildElementByTagName(Element ele, String childEleName) {

        NodeList nl = ele.getChildNodes();
        for (int i = 0; i < nl.getLength(); i++) {
            Node node = nl.item(i);
            if (node instanceof Element && childEleName.equals(node.getNodeName())
                    || childEleName.equals(node.getLocalName())) {
                return (Element) node;
            }
        }
        return null;
    }

    public static String getTextValue(Element valueEle) {

        StringBuffer value = new StringBuffer();
        NodeList nl = valueEle.getChildNodes();
        for (int i = 0; i < nl.getLength(); i++) {
            Node item = nl.item(i);
            if ((item instanceof CharacterData && !(item instanceof Comment)) || item instanceof EntityReference) {
                value.append(item.getNodeValue());
            }
        }
        return value.toString().trim();
    }
}