Updating status with picture via email. (JavaMail)
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20-06-2021 - |
Question
I'm writing a standalone application in Processing and I need to publish sketch screenshots on FB page timeline via JavaMail. So I wrote this:
void sendMail() {
String host="smtp.gmail.com";
Properties props=new Properties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable","true");
Session session = Session.getDefaultInstance(props, new Auth());
try
{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress("xxxxx@gmail.com", "xxxxx"));
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("xxxxxxxxxx@m.facebook.com", false));
message.setSubject("ok");
BodyPart mbp = new MimeBodyPart();
DataSource fds = new FileDataSource(file);
mbp.setDataHandler(new DataHandler(fds));
mbp.setFileName("screen.png");
Multipart mp = new MimeMultipart();
mp.addBodyPart(mbp);
message.setContent(mp);
message.setSentDate(new Date());
Transport.send(message);
println("Mail sent!");
}
catch(Exception e)
{
println(e);
}
}
Now, when I write down my gmail e-mail as recipient - method works perfectly (I receive only subject and attached photo), but when I use my FB page e-mail - only subject appears in my timeline, no photo.
I've done the same thing with PHP before and it worked. Maybe I have missed something?
Thank You in advance!:)
Solution
Well, I've looked on the content of the original message and noticed this:
Content-Type: application/octet-stream; name=screen.png
So I just added a third line to my code:
MimeBodyPart mbp = new MimeBodyPart();
mbp.attachFile(new File(file));
mbp.setHeader("Content-Type", "image/png");
Then I got:
Content-Type: image/png
and now everything works perfectly!:)
OTHER TIPS
You're creating a multipart message with exactly one part and that one part isn't a text part, it's an image part. While that's perfectly legal according to the MIME spec, it's "unusual", and perhaps Facebook email isn't prepared to handle such a message.
When you did the same thing with PHP, did you create a message with the same structure?
Try NOT creating a multipart message. Instead, just set the image as the content of the message itself.
Also, try creating a multipart message with a first part that's plain text and a second part that's the image.