@JacksonXmlRootElement(localName = "book-info")
public class BookInfo {

    @JacksonXmlElementWrapper
    private String title;

    @JacksonXmlElementWrapper
    private String author;

    @JacksonXmlCData
    private String content;

@Test
    void test() throws JAXBException, IOException {

        JacksonXmlModule module = new JacksonXmlModule();
        // and then configure, for example:
        module.setDefaultUseWrapper(false);
        XmlMapper xmlMapper = new XmlMapper(module);
        xmlMapper.enable(SerializationFeature.INDENT_OUTPUT);


        /*JAXBContext jaxbContext = JAXBContext.newInstance(BookInfo.class);
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);*/

        BookInfo bookInfo = new BookInfo();
        bookInfo.setTitle("Лелия");
        bookInfo.setAuthor("Жорж Санд.");
        bookInfo.setContent("Когда, поддавшись легковерной надежде");

        StringWriter sw = new StringWriter();

        xmlMapper.writeValue(sw, bookInfo);

        /*marshaller.marshal(bookInfo, sw);
        sw.flush();*/

        assertEquals("",
                sw.toString());
    }