java - java : email with pdf attached file : no object DCH for MIME type application/pdf

Question

我想用 javax 邮件在电子邮件中发送 pdf 文件。
下面，baos 是一个 ByteArrayOutputStream。

byte []  data=   baos.toByteArray();
OutputStream output = new FileOutputStream(fileName);
output.write(data);     
output.close();
DataSource source = new FileDataSource(fileName);
attachBodyPart.setDataHandler(new DataHandler(source, "application/pdf"));
attachBodyPart.setFileName(fileName);
multipart.addBodyPart(attachBodyPart);
message.setContent(multipart, "text/html");
Transport transport = session.getTransport("smtp");
transport.connect(host, from, pass);
transport.sendMessage(message, message.getAllRecipients());
transport.close();

当我尝试发送电子邮件时出现此异常:

javax.mail.MessagingException: IOException while sending message;
nested exception is: javax.activation.UnsupportedDataTypeException: no object DCH for MIME type application/pdf

我不知道这里出了什么问题。
如果有人这样做...

提前致谢。

Answer 1

试试这个。

MimeBodyPart attachment = new MimeBodyPart();
DataSource dataSrc = new ByteArrayDataSource(baos.toByteArray(), "application/pdf");
attachment.setDataHandler(new DataHandler(dataSrc));
attachment.setFileName("myPdfDocument.pdf");
multipart.addBodyPart(attachment);