Java Mail anexo com problemas [RESOLVIDO]

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public class InputStreamDataSource implements DataSource {

    private String name;
    private String contentType;
    private ByteArrayOutputStream baos;

    public InputStreamDataSource(String name, String contentType,
            InputStream inputStream) throws IOException {
        int read;
        this.name = name;
        this.contentType = contentType;

        baos = new ByteArrayOutputStream();

        byte[] buff = new byte[256];
        while ((read = inputStream.read(buff)) != -1) {
            baos.write(buff, 0, read);
        }
    }

    public String getContentType() {
        System.out.println("ContentType->>>" + contentType);
        return contentType;
    }

    public InputStream getInputStream() throws IOException {
        // TODO Auto-generated method stub
        return new ByteArrayInputStream(baos.toByteArray());
    }

    public String getName() {
        // TODO Auto-generated method stub
        return name;
    }

    public OutputStream getOutputStream() throws IOException {
        // TODO Auto-generated method stub
        throw new IOException("Cannot write to this read-only resource");
    }
}

ByteArrayInputStream attachStream = new ByteArrayInputStream(bts);
        //call constructor class:InputStreamDataSource

e esse é o metodo para envio
[code]protected void sendMail(InputStreamDataSource attach, Usuario usuario, Fornecedor fornecedor) throws IOException {
        Session session = Session.getInstance(props, new MailAuthenticator(usuario.getUsuario(), usuario.getEmailSenha()));

        try {
            MimeMessage msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress(usuario.getEmail()));
            InternetAddress[] address = {new InternetAddress(fornecedor.getEmail())};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject("Assunto teste.");

            MimeBodyPart bp1 = new MimeBodyPart();
            bp1.setText("Texto teste.");


            MimeBodyPart bp2 = new MimeBodyPart();
            bp2.setDataHandler(new DataHandler(attach));
            bp2.setFileName(attach.getName());
      

            Multipart mp = new MimeMultipart();
            mp.addBodyPart(bp2);
            mp.addBodyPart(bp1);


            msg.setContent(mp);
            msg.setSentDate(new Date());

            Transport.send(msg);
            System.out.println("Email enviado com sucesso !");

        } catch (MessagingException mex) {
            mex.printStackTrace();
            Exception ex = null;
            if ((ex = mex.getNextException()) != null) {
                ex.printStackTrace();
            }
        }
    }