UnsupportedDataTypeException Указание MimeType в DataHandler

Question

У меня есть вложение в моем Multipart, добавление PDF и изображений PNG (только я покрыл PDF)

ПРИМЕЧАНИЕ: я проверяю { ссылка } Я получаю application/octet-stream

MimeBodyPart preencodedMimeBodyPart = new PreencodedMimeBodyPart("base64");
InputStream inputStream = new FileInputStream(filePDF);      
preencodedMimeBodyPart.setDataHandler(new DataHandler(inputStream, "application/pdf"));      
//preencodedMimeBodyPart.attachFile(filePDF);

//preencodedMimeBodyPart.setHeader("Content-Type", "application/pdf"); // NOT WORKING!!!    
preencodedMimeBodyPart.setFileName(mailDTO.getNombrePDF());
preencodedMimeBodyPart.setDisposition(MimeBodyPart.ATTACHMENT);      
multipart.addBodyPart(preencodedMimeBodyPart);

// INI Check the Content
MimeBodyPart lastMimeBodyPart = multipart.getBodyPart(multipart.getCount() - 1);      
DataHandler dataHandler = lastMimeBodyPart.getDataHandler();
String contentType = dataHandler.getContentType();
System.out.println("contentType: " + contentType);
// END Check the Content

с использованием

preencodedMimeBodyPart.attachFile(filePDF);

работает, но я получаю: contentType: application/octet-stream

Изменение на

InputStream inputStream = new FileInputStream(filePDF);          
preencodedMimeBodyPart.setDataHandler(new DataHandler(inputStream, "application/pdf"));

Изменение, contentType: application/pdf но я получаю Исключение:

 javax.mail.MessagingException: IOException while sending message;                                                                       
  nested exception is:
        javax.activation.UnsupportedDataTypeException: no object DCH for MIME type application/pdf
            at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1167)
            at javax.mail.Transport.send0(Transport.java:254)
            at javax.mail.Transport.send(Transport.java:124)
            at com.bbva.extractos.sendmail.CallableSendMail.sendOneMail(CallableSendMail.java:277)
            at com.bbva.extractos.sendmail.CallableSendMail.lambda$call$0(CallableSendMail.java:93)
            at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1625)
            at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
            at com.bbva.extractos.sendmail.CallableSendMail.call(CallableSendMail.java:74)
            at com.bbva.extractos.sendmail.CallableSendMail.call(CallableSendMail.java:40)
            at java.util.concurrent.FutureTask.run(FutureTask.java:266)
            at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
            at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
            at java.lang.Thread.run(Thread.java:748)
Caused by: javax.activation.UnsupportedDataTypeException: no object DCH for MIME type application/pdf
            at javax.activation.ObjectDataContentHandler.writeTo(DataHandler.java:896)
            at javax.activation.DataHandler.writeTo(DataHandler.java:317)
            at javax.mail.internet.PreencodedMimeBodyPart.writeTo(PreencodedMimeBodyPart.java:112)
            at javax.mail.internet.MimeMultipart.writeTo(MimeMultipart.java:538)
            at com.sun.mail.handlers.multipart_mixed.writeTo(multipart_mixed.java:103)
            at javax.activation.ObjectDataContentHandler.writeTo(DataHandler.java:889)
            at javax.activation.DataHandler.writeTo(DataHandler.java:317)
            at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1574)
            at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1840)
            at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1119)
            ... 14 more

Другая альтернатива?