How do I read the media-type attribute from xsl output using Java EE?

Question

I using XSLT to transform XML to other content, in this case JSON. I set the MIME using the <xsl:output method="text" media-type="application/json" encoding="UTF-8"/> tag.

I transform XML into JSON using saxon9.

Transformer transformer = tFactory.newTransformer(new StreamSource(xslUrl));
ByteArrayInputStream xmlStream = new ByteArrayInputStream(xml.getBytes());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dataOut = new DataOutputStream(baos);
transformer.transform(new StreamSource(xmlStream), new StreamResult(new OutputStreamWriter(dataOut)));
String output = baos.toString();

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How can I also read the MIME as "application/json"?

Answer 1

This is the method to call to grab the MIME from the xsl:output media_type.

String mime = transformer.getOutputProperty(OutputKeys.MEDIA_TYPE);

You can then act accordingly, which in my case is to setContentType for the HttpServletResponse.