Sending XML to a mobile phone

[Raymond Ong]

Hi,

I have made a servlet that sends an XML data via an HttpServletResponse object. With this approach I can send the XML data to a browser or an HttpClient object which uses the getResponseBody() method. Problem is, it does not work with the MIDP2 HttpConnection object using the openInputStream(). Has anyone tried sending XML data to a mobile phone?

Please see code below for doPost().

Thanks a lot.

  
                        try {
                            response.setContentType("text/xml");                           
                            PrintWriter out = response.getWriter();
 
                            StreamResult streamResult = new StreamResult(out);
                            SAXTransformerFactory tf = (SAXTransformerFactory) SAXTransformerFactory
                                    .newInstance();
 
                            //SAX2.0 ContentHandler
                            TransformerHandler hd = tf.newTransformerHandler();
                            Transformer serializer = hd.getTransformer();
 
                            serializer.setOutputProperty(OutputKeys.ENCODING,
                                    "ISO-8859-1");
                            serializer.setOutputProperty(
                                    OutputKeys.DOCTYPE_SYSTEM,
                                    "authentication.dtd");
                            serializer.setOutputProperty(OutputKeys.INDENT,
                                    "yes");
 
                            hd.setResult(streamResult);
                            hd.startDocument();
 
                            AttributesImpl atts = new AttributesImpl();
 
                            //newsboy tag
                            hd.startElement("", "", "article", atts);
                            atts.clear();
                            atts.addAttribute("", "", "version", "CDATA",
                                    "1.0.0");
                            atts.addAttribute("", "", "timestamp", "CDATA",
                                    "2005.10.23.1550");
 
                            //status tag
                            hd.startElement("", "", "status", atts);
                            atts.clear();
                            atts.addAttribute("", "", "statusID", "CDATA",
                                    "DENIED");
                            hd.endElement("", "", "status");
 
                            hd.endElement("", "", "article");
                            hd.endDocument();                                                                                   
                        } catch (TransformerConfigurationException e) {
                            e.printStackTrace();
                        } catch (SAXException e) {
                            e.printStackTrace();
                        }

code based on : http://www.javazoom.net/services/newsletter/xmlgeneration.html
[ November 08, 2005: Message edited by: Raymond Ong ]

[Mark Spritzler]

Well for J2ME calling a Servlet, the out.write() would be the straight XML String. Meaning you don't add the XML Object to the HTTPResponse Object, but it is the response itself. I have done this many times with URLConnection and J2ME.

Personally when it comes to this, I just send straight text and forget about the XML. It all depends on the size of the data being sent back. Most of the time I try to keep it really small so there is less time.

Mark

[Raymond Ong]

Since I really can't get my previous code to work, looks like i'm gonna stick to sending plain text xml.

Thanks a lot.