MimeMailSender - Attachments howto?

[Sandhu <ka...@gmail.com>]

Hi all,

Trying to get attachment mails sent through enhancing mimeMailSender 
component and could get it working as below -

1. Component A creates attachment and sends it through normalized 
message into SM using- message.addAttachment(name,dataHandler).

2. The mailSender BC receives it and creates mail with attachment 
using 	   Spring's MimeMessageHelper -
    helper.addAttachment(name,byteArrayResource).

It works but this doesn't smell right (ReCreating a BAOS thru this 
read-write procedure in MailMarshaller again):

ByteArrayOutputStream stream = new ByteArrayOutputStream();
BufferedOutputStream out = new BufferedOutputStream(stream);

try {  //
	io (normalizedMessage.getAttachment(name).getInputStream(),out);
	out.close ();						
} catch (Exception e) {
	  e.printStackTrace ();
}

  byte[] bytes = stream.toByteArray();
  ByteArrayResource bbs = new ByteArrayResource(bytes);
  helper.addAttachment(name,bbs);

//read-write procedure
    public static void io (InputStream in, OutputStream out)
	    throws IOException {
	  byte[] buffer = new byte[8192];
	  int amount;
	  while ((amount = in.read (buffer)) >= 0)
	    out.write (buffer, 0, amount);
}


Can anyone advise how to better get attachment transported in SM as 
helper.addAttachment( name, DataHandler) does not work (multiple reads 
reqd ?)

Rgds,
Sandhu