Convert String to XML Document without changing end tag

Question

I use Axis to get some response through a remote Web Service. After receiving the response, I would convert the response string to XML Document in order for the subsequent process. Finally, my program would convert the processed Document to String as return.

Sometime I would receive some tag like <bla></bla>, a pair of tag with nothing. After converting the String to Document and getting through the process, the result would be converted to String finally.

But the <bla></bla> would become <bla/> automatically.

How do I keep the <bla></bla> the same without any change?

The following code is what I used to do the conversion.

public class TagMove {
   public static void main(String[] args)  throws Exception {
       String strA = "<STUDENT><NAME>Arthur</NAME><AGE></AGE></STUDENT>";
       Document docA = convertStringToDocument(strA, "UTF8");
       docA.setXmlStandalone(true);
       System.out.println(convertDocument2String(docA));
   }

   public static String convertDocument2String(Document doc) throws Exception {
       TransformerFactory tf = TransformerFactory.newInstance();
       Transformer transformer = tf.newTransformer();
       transformer.setOutputProperty(OutputKeys.INDENT, "yes");
       StreamResult result = new StreamResult(new StringWriter());
       DOMSource source = new DOMSource(doc);
       transformer.transform(source, result);
       String xmlString = result.getWriter().toString();
       return xmlString;
   }
   public static Document convertStringToDocument(String xmlString, String encoding) {
       try {
           DocumentBuilderFactory FACTORY =    DocumentBuilderFactory.newInstance();
           DocumentBuilder builder = FACTORY.newDocumentBuilder();
           Document doc = builder.parse(new InputSource(new ByteArrayInputStream(xmlString.getBytes(encoding))));
           return doc;
       } catch (Exception e) {
           e.printStackTrace();
       }
       return null;
   }
}

Just in case you didn't know, <bla></bla> and <bla/> are semantically equivalent. If the XML is only meant to be read by computers, you could leave it like that without risk — Aaron
– Aaron, Commented Dec 11, 2015 at 16:19
I know. But I can not guarantee that the caller of my program would treat it as XML. Because my program's role is like a EAI hub, there would be lots of clients. — Arthur
– Arthur, Commented Dec 11, 2015 at 16:34

AdamSkywalker · Accepted Answer · 2015-12-11 16:34:41Z

2

You can try to play with output format method

transformer.setOutputProperty(OutputKeys.METHOD, "html");

answered Dec 11, 2015 at 16:34

AdamSkywalker

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