g
    public static Document getNewDoc(String xmlStr)
    {
        Document doc = null;
        try
        {
            StringReader sr = new StringReader(xmlStr);
            InputSource iSrc = new InputSource(sr);
            DocumentBuilder builder=getBuilder();
            doc = builder.parse(iSrc);
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }
        return doc;
    }

    //save a document as a file at the given file path
    public static void save(Document doc, String filePath)
    {
        try
        {
            OutputFormat format = new OutputFormat(doc);   //Serialize DOM
            format.setEncoding("GB2312");
            StringWriter stringOut = new StringWriter();        //Writer will be a String
            XMLSerializer serial = new XMLSerializer(stringOut, format);
            serial.asDOMSerializer();                     // As a DOM Serializer
            serial.serialize(doc.getDocumentElement());
            String STRXML = stringOut.toString(); //Spit out DOM as a String
            String path = filePath;
            writeXml(STRXML, path);

        }
        catch (Exception e)
        {
         &nb

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