java - Logging XML request in Java-WS invoke method

Question

I'm using the Provider implementation of java-ws and wish to log the XML request prior to attempting to work with it, preferably using log4j.

I've tried using TransformerFactory and stdout to log the incoming raw XML (below), which works, but when I do, the Source object can then no longer be used and generates NULL errors beyond the logging.

I'm assuming this is because it's a stream object and can only be used once.

private void printSource(Source source) {
    try {
        System.out.println("==========RESPONSE============");
        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();

        transformer.transform(source, new StreamResult(System.out));
        System.out.println("\n==============================");
    }
    catch(Exception e) {
        System.out.println(e.getMessage());
    }       
}