Javax mail api: getting part.getdispotion()= null even if attachment in present

Question

I am facing this issue after using the mac mailing service.
able to read attachments if I use outlook or gmail.

piece of code where I am reading the attachment from mail.

if (contentType.contains("multipart"))
        {
            Multipart multiPart = (Multipart) msg.getContent();
            int partCount = multiPart.getCount();                                       

            for (int j = 0; j < partCount; j++)
            {
                BodyPart part = multiPart.getBodyPart(j);                                           
                if (Part.ATTACHMENT.equalsIgnoreCase(part.getDisposition()))    // getting null here
                {
                    attachmentProcessing = true;
                    InputStream is;
                    is = part.getInputStream();
                    f = new File(filePath + part.getFileName());
                    fileArray.add(f);
                    FileOutputStream fos = new FileOutputStream(f);
                    byte[] buf = new byte[4096];
                    int bytesRead;
                    while((bytesRead = is.read(buf))!=-1) {
                        fos.write(buf, 0, bytesRead);
                    }
                    fos.close();
                }                                       
            }
        }

part details for mac mailing service:

text/plain; charset=us-ascii
part.getDisposition() = null
multipart/mixed; boundary="Apple-Mail=_C50D7E2D-27A1-4449-BAA3-5DC9D1E522AF"

and for others

multipart/mixed; boundary="----=_NextPart_000_0033_01D28DC6.C9D0C8B0"
text/plain; name=HashTagList.txt; charset=us-ascii
part.getDisposition() = attachment

Bill Shannon Bill Shannon · Accepted Answer · 2017-02-27T20:00:40

Disposition is optional; not all messages with "attachments" will set the disposition. The JavaMail FAQ has more information.

Also, rather than checking for the string "multipart" in the content type, you should use the isMimeType method and check for "multipart/mixed".

See the msgshow.java sample program for more examples and details.

Javax mail api: getting part.getdispotion()= null even if attachment in present

1 Answers