Adding XML Style-Sheet at specific line of XML Document in JAVA

Last days I was searching for adding XML style sheet at specific line of XML document using JAVA and I found the solution. Therefore want to share here for audience convenience.

Here are the steps how do it.

• Converting XML document to String
• Adding Style-Sheet at second line
• Converting String back to XML file

Here is the main method which is the calling entry point of my main business logic:

public static void main(String[] args) throws TransformerConfigurationException 
{

             

  final String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"

                       +"<Emp id=\"1\"><name>naeemgik.blogspot.com</name><age>25</age>\n"

                       + "<role>Developer</role><gen>Male</gen></Emp>";

  Document beforeAddingStyleSheetDocument = convertStringToDocument(xmlStr);

             

  Document afterAddingStyleSheetDocument = null;

              
 try {

      afterAddingStyleSheetDocument = addingStylesheet(beforeAddingStyleSheetDocument);

 } catch (ParserConfigurationException e) {

     e.printStackTrace();

 }

             

 String stringAfterAddingStylesheet = convertDocumentToString(afterAddingStyleSheetDocument);

 System.out.println(stringAfterAddingStylesheet);

}



Code snippet for converting XML String to Document

private static Document convertStringToDocument(String xmlStr)

{

       DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

       DocumentBuilder builder;

       Document doc = null;

       try {

              builder = factory.newDocumentBuilder();

              doc = builder.parse(new InputSource(new StringReader(xmlStr)));

       } catch (Exception e) {

              e.printStackTrace();

       }

       return doc;

}  


Now adding style-sheet at corresponding line (e.g. here at second line) of XML document

private static <ProcessingInstructionImpl> Document addingStylesheet(

                     Document doc) throws TransformerConfigurationException,

                     ParserConfigurationException

{

       ProcessingInstructionImpl pi = (ProcessingInstructionImpl) doc

                           .createProcessingInstruction("xml-stylesheet",

                                         "type=\"text/xsl\" href=\"CDA.xsl\"");

       Element root = doc.getDocumentElement();

       doc.insertBefore((Node) pi, root);

       return doc;

}

Converting String text back to XML document

private static String convertDocumentToString(Document doc)

 {

        TransformerFactory tf = TransformerFactory.newInstance();

        Transformer transformer;

        try {

            transformer = tf.newTransformer();

            // below code to remove XML declaration

        // transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION,

        // "yes");

        StringWriter writer = new StringWriter();

        transformer.setOutputProperty(OutputKeys.INDENT, "yes");

        transformer.setOutputProperty(OutputKeys.STANDALONE, "yes");

            transformer.transform(new DOMSource(doc), new StreamResult(writer));

            String output = writer.getBuffer().toString();

            return output;

        } catch (TransformerException e) {

            e.printStackTrace();

        }

 }


               ~~~~~~~~~~~~~ So enjoy thats all ~~~~~~~~~~~~~~~~~~~~