How do I extract EMBEDDED and OLE attachments?

[Ben Reid]

I am having trouble extracting attachments where the AttachMethod is EMBEDDED or OLE. I have successfully extracted attachments where the AttachMethod is BY VALUE using the example code.

The example code (see below) says that I can extract attachments using getFileInputStream() - but this doesnt seem to work for EMBEDDED or OLE attachments.


Attachments can be read through PSTAttachment.getFileInputStream like so:

int numberOfAttachments = email.getNumberOfAttachments();
for (int x = 0; x < numberOfAttachments; x++) {
        PSTAttachment attach = email.getAttachment(x);
        InputStream attachmentStream = attach.getFileInputStream();
        // both long and short filenames can be used for attachments
        String filename = attach.getLongFilename();
        if (filename.isEmpty()) {
                filename = attach.getFilename();
        }
        FileOutputStream out = new FileOutputStream(filename);
        // 8176 is the block size used internally and should give the best performance
        int bufferSize = 8176;
        byte[] buffer = new byte[bufferSize];
        int count = attachmentStream.read(buffer);
        while (count == bufferSize) {
                out.write(buffer);
                count = attachmentStream.read(buffer);
        }
        byte[] endBuffer = new byte[count];
        System.arraycopy(buffer, 0, endBuffer, 0, count);
        out.write(endBuffer);
        out.close();
        attachmentStream.close();
}

[Dimitry Erastov]

What exactly is the problem? Does getFileInputStream() fail? I have a few messages with embedded attachments that my application extracted and they look fine. I don't do anything special for them, just set content disposition and content-id, if available from the source message.