create json from dom document

I have a org.w3c.dom.Document. To generate the xml is no problem. But how can I generate json out of the document ?

this is the code to get the xml string

        TransformerFactory transfac = TransformerFactory.newInstance();
        Transformer trans = transfac.newTransformer();
        trans.setOutputProperty(Output开发者_运维技巧Keys.OMIT_XML_DECLARATION, "yes");
        trans.setOutputProperty(OutputKeys.INDENT, "yes");

        // create string from xml tree
        StringWriter sw = new StringWriter();
        StreamResult result = new StreamResult(sw);
        DOMSource source = new DOMSource(document);
        trans.transform(source, result);
        String xmlString = sw.toString();

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The data models for JSON and XML are different, therefore there is no canonical transformation from XML to JSON.

If you could present your data, maybe we can propose something.

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Just to solve this question. At the end I used a different approach. I saved the data in a Tree.

Then for Rendering the JSONView I used the JacksonJsonView Mapper. And for Rendering the XML I used an XML Marshaller.

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XmlMapper xmlMapper = new XmlMapper();

String xml= FileUtils.readFileToString(new File("test_4.xsd.xml"),Charset.defaultCharset());

JsonNode node = xmlMapper.readTree(xml.getBytes());

ObjectMapper jsonMapper = new ObjectMapper();

String json = jsonMapper.writeValueAsString(node);

System.out.println(json);

Reference