我尝试从xml转换为json。它可以很好地处理正常的文本数据内容。当xml标记中的数据是二进制时，我们不能将xml解组为java对象。你能帮忙分享一下我们如何将xml转换成二进制的json吗。
java代码：

public <T> String xmlToJson(Class<T> clazz, String xmlString, boolean includeRoot) {
    StringWriter writer = new StringWriter();
    String jsonString = "{}";

    try {

        XMLInputFactory xif = XMLInputFactory.newInstance();
        xif.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, false);
        xif.setProperty(XMLInputFactory.SUPPORT_DTD, true);
        XMLStreamReader xsr = xif.createXMLStreamReader(new StringReader(xmlString));
        JAXBContext jc = JAXBContext.newInstance(clazz);
        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.setProperty("eclipselink.media-type", "application/json");
        marshaller.setProperty("eclipselink.json.include-root", includeRoot);
        marshaller.setProperty(MarshallerProperties.JSON_ATTRIBUTE_PREFIX, "@");
        JAXBElement<T> addressFromXML = unmarshaller.unmarshal(xsr, clazz); //ERROR at this line for binary data
        marshaller.marshal(addressFromXML, writer);
        jsonString = writer.toString();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return jsonString;
}

错误如下：

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: javax/mail/internet/MimeMultipart] with root cause
java.lang.NoClassDefFoundError: javax/mail/internet/MimeMultipart
    at org.eclipse.persistence.internal.oxm.XMLBinaryDataHelper.initializeDataTypes(XMLBinaryDataHelper.java:74)
    at org.eclipse.persistence.internal.oxm.XMLBinaryDataHelper.<init>(XMLBinaryDataHelper.java:54)
    at org.eclipse.persistence.internal.oxm.XMLBinaryDataHelper.getXMLBinaryDataHelper(XMLBinaryDataHelper.java:60)
    at org.eclipse.persistence.internal.oxm.XMLInlineBinaryHandler.endElement(XMLInlineBinaryHandler.java:126)
    at org.eclipse.persistence.internal.oxm.record.deferred.EndElementEvent.processEvent(EndElementEvent.java:37)
    at org.eclipse.persistence.internal.oxm.record.deferred.DeferredContentHandler.executeEvents(DeferredContentHandler.java:64)
    at org.eclipse.persistence.internal.oxm.record.deferred.BinaryMappingContentHandler.executeEvents(BinaryMappingContentHandler.java:75)
    at org.eclipse.persistence.internal.oxm.record.deferred.BinaryMappingContentHandler.processSimpleElement(BinaryMappingContentHandler.java:67)
    at org.eclipse.persistence.internal.oxm.record.deferred.DeferredContentHandler.endElement(DeferredContentHandler.java:122)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parseEvent(XMLStreamReaderReader.java:150)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parse(XMLStreamReaderReader.java:100)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parse(XMLStreamReaderReader.java:87)
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:1016)
    at org.eclipse.persistence.internal.oxm.XMLUnmarshaller.unmarshal(XMLUnmarshaller.java:657)
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:460)