elem.setAttribute("xmlns:soapenv",constants.getEnvelopeURI());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
xmlSer.setOutputByteStream(baos);
xmlSer.serialize(elem);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(bais);
StAXOMBuilder builder = new StAXOMBuilder(reader);
builder.setCache(true);