Comment désactiver Prettyprint XStream XML et encore ajouter Stylesheet et Prolog?

Question

Je peux supprimer PrettyPrint dans XML (tous les retours newlines / chariot) en utilisant compactwriter () mais comment garder mon proloc et mes feuilles de style?

Actuellement, j'utilise une classe d'écrivain pour ajouter du prolog et de la feuille de style en utilisant la méthode d'écriture.

Vous trouverez ci-dessous ma fonction pour sérialiser un objet.

private void serializeData(DiagData diagData){  
        fileinfo=new HashMap<String,String>();
        XStream xstream = new XStream();
        xstream.processAnnotations(DiagData.class);

        FileOutputStream fileOutputStream=null;
        Writer writer=null;
        //CompactWriter writer=null;
        xstream.registerConverter(new MapConverter());

        try {
            String path = Constants.XML_PATH+File.separator+Constants.DIRECTORY_NAME;
            File diagnosticDir = new File(path);

            String serialNumber=null;

            IDataCollector dataCollector=new DataCollector();
            serialNumber=dataCollector.getSerialNumber();

            String fileName = new SimpleDateFormat("yyyyMMddhhmmss'.xml'").format(new Date());
            if(serialNumber!=null)fileName=serialNumber+Constants.UNDERSCORE+fileName;
            fileName=Constants.PHONEHOME+Constants.UNDERSCORE+fileName;

            fileOutputStream = new FileOutputStream(path+File.separator+fileName);

            writer = new OutputStreamWriter(fileOutputStream);
            //writer = new CompactWriter(new OutputStreamWriter(fileOutputStream));

            writer.write(Constants.PROLOG);
            writer.write(Constants.STYLESHEET);
            xstream.toXML(diagData, writer);
            //xstream.marshal(diagData, writer);

        } catch (FileNotFoundException e1) {

        } catch (Exception e) {

        } finally {
            try {
                fileOutputStream.close();
                writer.close();             
            } catch (IOException e) {
                // TODO Auto-generated catch block
            }
        }
    }

Answer 1

Si vous regardez le Xstream Documentation, ils déclarent clairement que vous devez ajouter le Prolog XML vous-même:

Why does XStream not write an XML declaration?

XStream is designed to write XML snippets, so you can embed its output into 
an existing stream or string. You can write the XML declaration yourself into 
the Writer before using it to call XStream.toXML(writer).

Le code suivant devrait fonctionner. J'ai supprimé la plupart de votre code, vous devez donc le remettre. Le but est simplement de vous donner un exemple de travail difficile:

private static void serializeData(Object diagData) throws Exception {
    XStream xstream = new XStream();
    xstream.processAnnotations(DiagData.class);

    FileOutputStream fileOutputStream = null;
    Writer writer = new PrintWriter(new File(your file));
    CompactWriter compactWriter = new CompactWriter(writer);

    try {
        writer.write(your xml prolog);
        writer.write(your stylesheet);
        xstream.marshal(diagData, compactWriter);
    } catch (FileNotFoundException e1) {

    } catch (Exception e) {

    } finally {
       release resources
   }
}