My Java application creates an e-mail and sends it to a user. If the e-mail is sent to a Gmail account and the user checks his e-mail online in a web browser, the image that is in the body and at the bottom of the e-mail (i.e. not an attachment) will be displayed. However, if the e-mail is sent to a user who checks his e-mail via Microsoft Outlook (i.e. the e-mail passes through a Microsoft Exchange Server), the image is converted to a binary file and then attached to the e-mail, and at the bottom of the e-mail, the filename “ATT00001.bin” is displayed. How do I fix this issue so that the image will be displayed?
Here is what the e-mail should look like with the image, which should be at the bottom of the e-mail.
But here is how the e-mail looks in Microsoft Outlook. There is no image, only a binary file.
Here is my code for generating an e-mail with an inline image.
MimeMessage message = mailSender.createMimeMessage(); message.setSubject("Subject"); MimeMessageHelper msg = new MimeMessageHelper(message, true); msg.setTo("recipient@gmail.com"); msg.setFrom("sender@gmail.com"); msg.setSentDate(new Date()); Multipart multipart = new MimeMultipart(); MimeBodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setContent("<html><body>Test<br />" + "<img src='cid:101@gmail.com'/></body></html>", "text/html"); multipart.addBodyPart(messageBodyPart); MimeBodyPart imagePart = new MimeBodyPart(); DataSource imgSrc = new FileDataSource(new File(getClass().getClassLoader() .getResource("images/Energy_Office-logo.png").toURI())); imagePart.setDataHandler(new DataHandler(imgSrc)); imagePart.setContentID("<101@gmail.com>"); // The following code does not fix the issue either. // imagePart.setHeader("Content-ID", "<" + "101@gmail.com" + ">"); imagePart.setDisposition(MimeBodyPart.INLINE); multipart.addBodyPart(imagePart); MimeBodyPart pdfPart = new MimeBodyPart(); DataSource pdfSrc = new ByteArrayDataSource(attachment, mime); pdfPart.setDataHandler(new DataHandler(pdfSrc)); pdfPart.setFileName("file.pdf"); multipart.addBodyPart(pdfPart); message.setContent(multipart, "text/html"); message.saveChanges(); mailSender.send(message);Advertisement
Answer
I wrote the following code, and it solved my problem. The difference between this one and the one above is that I called setText instead of setContent for the body text, and I called attachFile instead of setDataHandler for the image.
private void send(String toAddress, String subject, String text, byte[] attachment) { JavaMailSenderImpl mailSender = new JavaMailSenderImpl(); mailSender.setHost(mailHost); MimeMessage message = mailSender.createMimeMessage(); MimeMessageHelper msgHelper = new MimeMessageHelper(message, true); msgHelper.setSubject(subject); msgHelper.setFrom(fromAddress); msgHelper.setTo(toAddress); Multipart multipart = new MimeMultipart(); MimeBodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setText(text, "UTF-8", "html"); multipart.addBodyPart(messageBodyPart); MimeBodyPart imagePart = new MimeBodyPart(); imagePart.attachFile(new File(PdfMailServiceImpl.class.getClassLoader().getResource("images/Energy_Office-logo.png").toURI())); imagePart.setContentID("<" + "101" + ">"); imagePart.setDisposition(MimeBodyPart.INLINE); multipart.addBodyPart(imagePart); MimeBodyPart pdfPart = new MimeBodyPart(); DataSource pdfSrc = new ByteArrayDataSource(attachment, mime); pdfPart.setDataHandler(new DataHandler(pdfSrc)); pdfPart.setFileName(formFilename); multipart.addBodyPart(pdfPart); message.setContent(multipart, "text/html"); message.saveChanges(); mailSender.send(message);}