附件问题在android使用SMTP邮件系统

Question

你好，我正在尝试'从文件夹中附加图像'，这是作为附件发送，但它未能发送邮件。

如果我删除附件的multipart部分，邮件将通过。有人能帮我一下吗?

@Override
protected void onStart()
{
     final String username = "[e-mail]";
        final String password = "123456";

        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.port", "587");
        Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
          });
            try {
                message = new MimeMessage(session);
                message.setFrom(new InternetAddress("[e-mail]"));
                message.setRecipients(Message.RecipientType.TO,InternetAddress.parse("[e-mail]"));
                message.setSubject("Photo"+ jobNo);
                message.setText("Hello,"
                    + "nn New job with job no" + " " + jobNo +" "+ "has arrived from Team"+ " "+ teamNo 
                    + "nnnn Please check the attached images."
                    + "nnnnn Thank You");
                message.setContent(multipart);
                BodyPart messageBodyPart = new MimeBodyPart(); 
                DataSource source = new FileDataSource(Environment.getExternalStorageDirectory() + "/CLC/"+jobNo) ;
                messageBodyPart.setDataHandler(new DataHandler(source)); 
                messageBodyPart.setFileName(jobNo); 
                multipart.addBodyPart(messageBodyPart);
                BodyPart messageBodyPart2 = new MimeBodyPart(); 
                messageBodyPart2.setText("Hi"); 
                multipart.addBodyPart(messageBodyPart2); 

                new SendMailTask().execute(message);
                Toast.makeText(getApplicationContext(), "Job Sent", Toast.LENGTH_SHORT).show();
                System.out.println("Done");
            } catch (MessagingException e) {
                throw new RuntimeException(e);
            }
            super.onStart();
    }

public class SendMailTask extends AsyncTask<Message, Void, Void>
{
    private ProgressDialog progressDialog;
    @Override
    protected void onPreExecute()
    {
        super.onPreExecute();
        progressDialog = ProgressDialog.show(Email.this, "Please wait", "Sending mail", true, false);
    }
    @Override
    protected void onPostExecute(Void aVoid)
    {
        super.onPostExecute(aVoid);
        progressDialog.dismiss();
    }
    protected Void doInBackground(javax.mail.Message... messages)
    {
        try
        {
            Transport.send(message);
        } catch (MessagingException e)
        {
            e.printStackTrace();
        }
        return null;
    }
}

}

Answer 1

您的代码看起来很好。(见http://www.jguru.com/faq/view.jsp?EID=30251)

你能试着改变MessageBodyPart和MessageBodyPart2的顺序吗?因此，首先添加消息正文，然后添加附件。