XmlUtils

XmlUtils.java

package com.ricardogeek.soap.security;


import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.io.StringReader;
import java.io.Writer;

public final class XmlUtils {
    private static DocumentBuilder documentBuilder;

    public static Document parseXml(String xmlString) throws IOException {
        return parse(new InputSource(new StringReader(xmlString)));
    }

    static synchronized public Document parse(InputSource inputSource) throws IOException {
        try {
            return ensureDocumentBuilder().parse(inputSource);
        } catch (SAXException e) {
            throw new IOException(e.toString());
        }
    }

    private static DocumentBuilder ensureDocumentBuilder() {
        if (documentBuilder == null) {
            try {
                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                dbf.setNamespaceAware(true);
                documentBuilder = dbf.newDocumentBuilder();
            } catch (ParserConfigurationException e) {
                System.out.println("Error creating DocumentBuilder; " + e.getMessage());
            }
        }

        return documentBuilder;
    }

    public static void serialize(Element elm, Writer writer) throws IOException {
        try {
            XmlObject xmlObject = XmlObject.Factory.parse(elm);
            xmlObject.save(writer);
        } catch (XmlException e) {
            throw new IOException(e.toString());
        }
    }
}