Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.ByteArrayOutputStream;

import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.CDATASection;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public class Main {
    private static ErrorHandler fErrorHandler = new ErrorHandler() {

        public void error(SAXParseException arg0) throws SAXException {
            throw arg0;
        }

        public void fatalError(SAXParseException arg0) throws SAXException {
            throw arg0;
        }

        public void warning(SAXParseException arg0) throws SAXException {
        }
    };

    public static String map2Xml(Map<String, String> content, String root_elem_id, String item_elem_id)
            throws Exception {
        DocumentBuilder b = documentBuilder();
        Document doc = b.newDocument();
        String str = null;
        SAXTransformerFactory tf = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        ByteArrayOutputStream out = new ByteArrayOutputStream();

        Element root = doc.createElement(root_elem_id);
        doc.appendChild(root);

        // Now, add all the children
        for (Entry<String, String> e : content.entrySet()) {
            Element item = doc.createElement(item_elem_id);
            item.setAttribute("id", e.getKey());
            CDATASection data = doc.createCDATASection(e.getValue());
            item.appendChild(data);
            root.appendChild(item);
        }

        try {
            DOMSource ds = new DOMSource(doc);
            StreamResult sr = new StreamResult(out);
            TransformerHandler th = tf.newTransformerHandler();
            th.getTransformer().setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

            Properties format = new Properties();
            format.put(OutputKeys.METHOD, "xml");
            //         format.put("{http://xml. customer .org/xslt}indent-amount", "4");
            //         format.put("indent-amount", "4");
            //         format.put(OutputKeys.DOCTYPE_SYSTEM, "myfile.dtd");
            format.put(OutputKeys.ENCODING, "UTF-8");
            format.put(OutputKeys.INDENT, "yes");

            th.getTransformer().setOutputProperties(format);
            th.setResult(sr);
            th.getTransformer().transform(ds, sr);

            str = out.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return str;
    }

    private static DocumentBuilder documentBuilder() throws Exception {
        DocumentBuilder b = null;

        try {
            DocumentBuilderFactory f = DocumentBuilderFactory.newInstance();
            b = f.newDocumentBuilder();

            b.setErrorHandler(fErrorHandler);
        } catch (ParserConfigurationException e) {
            throw e;
        }

        return b;
    }
}