How to transform XMLStreamReader to XMLStreamWriter

Question

Should be easy and obvious but I cant find a way - the XMLOutputFactory accepts anly OutputStream, Result or another Writer to generate a new XMLStreamWriter.

What I have at hand is an XMLStreamReader which has no methods for extracting a Result or an OutputStream.

If the solution would be easier using the Event API, that would be OK too.

Thank you

Answer 1

You could use a javax.xml.transform.Transformer to convert a StAXSource wrapping the reader to a StAXResult wrapping the writer.

TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
StAXSource source = new StAXSource(xmlStreamReader);
StAXResult result = new StAXResult(xmlStreamWriter);
t.transform(source, result);

Using the Event API you could also use the folloiwng:

• http://download.oracle.com/javase/6/docs/api/javax/xml/stream/XMLEventWriter.html#add(javax.xml.stream.XMLEventReader)