依赖

        <dependency>
            <groupId>de.odysseus.staxon</groupId>
            <artifactId>staxon</artifactId>
            <version>1.3</version>
        </dependency>

json格式转xml格式

/**
     * json格式转xml格式
     * @param json
     * @return
     */
    private static String json2xml(String json) {
        StringReader input = new StringReader(json);
        StringWriter output = new StringWriter();
        JsonXMLConfig config = new JsonXMLConfigBuilder().multiplePI(false).repairingNamespaces(false).build();
        try {
            XMLEventReader reader = new JsonXMLInputFactory(config).createXMLEventReader(input);
            XMLEventWriter writer = XMLOutputFactory.newInstance().createXMLEventWriter(output);
            writer = new PrettyXMLEventWriter(writer);
            writer.add(reader);
            reader.close();
            writer.close();
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        } finally {
            try {
                output.close();
                input.close();
            } catch (IOException e) {
                log.error(e.getMessage(), e);
            }
        }
        if (output.toString().length() >= 21) {
            return output.toString().substring(22);
        }
        return output.toString();
    }