elements To String - Java XML

Java examples for XML:XML Element Value

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Description

elements To String

Demo Code

/*******************************************************************************
     * Copyright (c) 2015-2016 Oak Ridge National Laboratory.
     * All rights reserved. This program and the accompanying materials
     * are made available under the terms of the Eclipse Public License v1.0
     * which accompanies this distribution, and is available at
     * http://www.eclipse.org/legal/epl-v10.html
     *******************************************************************************/
//package com.java2s;

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

public class Main {
    public static String elementsToString(NodeList nls, boolean add_newlines) {

        String ret = "";
        for (int i = 0; i < nls.getLength(); i++) {
            final String nextstr = elementToString(nls.item(i),
                    add_newlines).trim();
            if (nextstr.length() > 0) {
                if (ret.length() > 0)
                    ret += (add_newlines) ? "\n" : " ";
                ret += nextstr;/*from ww w  .  ja v a  2s .  com*/
            }
        }
        return ret;
    }

    /** Transform xml element and children into a string
     *
     * @param nd Node root of elements to transform
     * @return String representation of xml
     */
    public static String elementToString(Node nd, boolean add_newlines) {
        //short type = n.getNodeType();

        if (Node.CDATA_SECTION_NODE == nd.getNodeType()) {
            return "<![CDATA[" + nd.getNodeValue() + "]]&gt;";
        }

        // return if simple element type
        final String name = nd.getNodeName();
        if (name.startsWith("#")) {
            if (name.equals("#text"))
                return nd.getNodeValue();
            return "";
        }

        // output name
        String ret = "<" + name;

        // output attributes
        NamedNodeMap attrs = nd.getAttributes();
        if (attrs != null) {
            for (int idx = 0; idx < attrs.getLength(); idx++) {
                Node attr = attrs.item(idx);
                ret += " " + attr.getNodeName() + "=\""
                        + attr.getNodeValue() + "\"";
            }
        }

        final String text = nd.getTextContent();
        final NodeList child_ndls = nd.getChildNodes();
        String all_child_str = "";

        for (int idx = 0; idx < child_ndls.getLength(); idx++) {
            final String child_str = elementToString(child_ndls.item(idx),
                    add_newlines);
            if ((child_str != null) && (child_str.length() > 0)) {
                all_child_str += child_str;
            }
        }
        if (all_child_str.length() > 0) {
            // output children
            ret += ">" + (add_newlines ? "\n" : " ");
            ret += all_child_str;
            ret += "</" + name + ">";
        } else if ((text != null) && (text.length() > 0)) {
            // output text
            ret += text;
            ret += "</" + name + ">";
        } else {
            // output nothing
            ret += "/>" + (add_newlines ? "\n" : " ");
        }

        return ret;
    }
}

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