Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.StringReader;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Node;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;
import org.xml.sax.InputSource;

public class Main {

    public static String format(String xml) throws Exception {
        InputSource src = new InputSource(new StringReader(xml));
        Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
        Boolean keepDeclaration = Boolean.valueOf(xml.startsWith("<?xml"));

        System.setProperty(DOMImplementationRegistry.PROPERTY,
                "com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");

        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();

        writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
        writer.getDomConfig().setParameter("xml-declaration", keepDeclaration);
        return writer.writeToString(document);
    }

    public static void main(String[] args) throws Exception {
        String unformattedXml = "<?xml version='1.0' encoding='UTF-8'?><QueryMessage\n"
                + "        xmlns='http://www.SDMX.org/'\n" + "        xmlns:query='http://www.SDMX.org/query'>\n"
                + "    <Query>\n" + "        <query:CategorySchemeWhere>\n"
                + "           <query:AgencyID>ECB\n\n\n\n</query:AgencyID>\n"
                + "        </query:CategorySchemeWhere>\n" + "    </Query>\n\n\n\n\n" + "</QueryMessage>";

        System.out.println(format(unformattedXml));
    }
}