JavaMail - MimeMessageHelper Attachment does not get sent with mail

Question

I can send emails just fine but the attachment is never added to the mail. Below is my code, created a tempFile for testing purpose.

What did i miss?

I tried other ways to add attachments as well creating a seperate BodyPart, using FileInputStreamResource,...

 MimeMessage msg = sender.createMimeMessage();
 MimeMessageHelper helper = new MimeMessageHelper(msg, true, "UTF-8");

 helper.setFrom(eMail);
 helper.setTo(eMail);
 helper.setSubject(subject);

 msg.setContent(message, "text/html");

 File randomFile = File.createTempFile("rnd", "txt");
 randomFile.deleteOnExit();
 helper.addAttachment("rnd", randomFile);

 sender.send(msg);

Any help is appreciated

Answer 1

使用MimeMessage而不是MimeMessage设置消息内容。从msg.setContent（message，“ text / html”）更改为helper.setText（message，true）。使用MimeMessage setContent将设置整个消息的内容