Remove the XML header from an XML in Java

Question

StringWriter  writer = new StringWriter(); XmlSerializer serializer = new KXmlSerializer(); serializer.setOutput(writer); serializer.startDocument(null, null); serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); // Creating XML  serializer.endDocument(); String xmlString = writer.toString(); 

In the above environment, whether there are any standard API's available to remove the XML header <?xml version='1.0' ?> or do you suggest to go via string manipulation:

if (s.startsWith("<?xml ")) {     s = s.substring(s.indexOf("?>") + 2); } 

Wanted the output in the xmlString without XML header info <?xml version='1.0' ?>.

Answer 1

Ideally you can make an API call to exclude the XML header if desired. It doesn't appear that KXmlSerializer supports this though (skimming through the code here). If you had a org.w3c.dom.Document (or actually any other implementation of javax.xml.transform.Source) you could accomplish what you want this way:

TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer = tf.newTransformer(); transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); StringWriter writer = new StringWriter(); transformer.transform(new DOMSource(doc), new StreamResult(writer)); 

Otherwise if you have to use KXmlSerializer it looks like you'll have to manipulate the output.