Question

大家好我正在使用JavaMailApi我正在尝试从我的应用程序发送电子邮件。这个问题已经被问了很多次了，我已经尝试了很多这样的例子，几乎所有的都是相同但我无法解决javax.mail.MessagingException的异常：无法连接到SMTP主机：smtp-mail.outlook.com，port： 587 这是我的代码：

public class SendMail extends AsyncTask<Void, Void, Void> {

//Declaring Variables
private Context context;
private Session session;

//Information to send email
private String email;
private String subject;
private String message;

//Progressdialog to show while sending email
private ProgressDialog progressDialog;

//Class Constructor
public SendMail(Context context, String email, String subject, String message) {
    //Initializing variables
    this.context = context;
    this.email = email;
    this.subject = subject;
    this.message = message;
}

@Override
protected void onPreExecute() {
    super.onPreExecute();
    //Showing progress dialog while sending email
    progressDialog = ProgressDialog.show(context, "Sending message", "Please wait...", false, false);
}

@Override
protected void onPostExecute(Void aVoid) {
    super.onPostExecute(aVoid);
    //Dismissing the progress dialog
    progressDialog.dismiss();
    //Showing a success message
    Toast.makeText(context, "Message Sent", Toast.LENGTH_LONG).show();
}

@Override
protected Void doInBackground(Void... params) {

    String prot = "smtp";
    final String user = Config.EMAIL;
    String to = Config.EMAIL;
    final String pass = Config.PASSWORD;
    String mailhost = "smtp-mail.outlook.com";

    Properties props = System.getProperties();
    props.put("mail." + prot + ".host", mailhost);
    props.put("mail." + prot + ".auth", "true");
    props.put("mail." + prot + ".starttls.enable", "true");
    props.put("mail." + prot + ".port", "587");
    props.put("mail." + prot + ".ssl.enable", "false");

    Session session = Session.getDefaultInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(user, pass);
                }
            });
    session.setDebug(true);

    try {
        Message msg = new MimeMessage(session);
        msg.setFrom(new InternetAddress(user));
        msg.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse(to, false));

        msg.setSubject("TESTE ENVIO EMAIL");

        msg.setText("Teste de envio de email conteudo");

        msg.setHeader("X-Mailer", user);
        msg.setSentDate(new Date());

        SMTPTransport t = (SMTPTransport) session.getTransport(prot);

        t.connect(mailhost, user, pass);

        t.sendMessage(msg, msg.getAllRecipients());
        t.close();

        Log.d("------------", "done");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

请告诉我这段代码有什么问题。谢谢

Answer 1

您好请将此代码放在doInBackground方法中，尝试可能会对您有所帮助。它为我工作

try {
            Properties props = new Properties();
            props.put("mail.smtp.auth", Constant.MAIL_SMTP_AUTH);
            props.put("mail.smtp.starttls.enable", Constant.MAIL_SMTP_STARTTLS_ENABLE);
            props.put("mail.smtp.host", Constant.MAIL_SMTP_HOST);
            props.put("mail.smtp.port", Constant.MAIL_SMTP_PORT);
            Session session = Session.getInstance(props,
                    new javax.mail.Authenticator() {
                        protected PasswordAuthentication getPasswordAuthentication() {
                            return new PasswordAuthentication(Constant.SMTP_USER, Constant.SMTP_PASSWORD);
                        }
                    });
            message = new MimeMessage(session);
            message.setFrom(new InternetAddress(Constant.SMTP_FROM));
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(Constant.SMTP_TO));
            message.setRecipients(Message.RecipientType.CC,
                    InternetAddress.parse(Constant.SMTP_CC));
            message.setSubject(mSalesOrderNumber + "_Invoice");
            String messageStr = getString(R.string.msg_please_find_attached_invoice);
            MimeBodyPart messagePart = new MimeBodyPart();
            messagePart.setText(messageStr);
            MimeBodyPart attachmentPart = new MimeBodyPart();
            FileDataSource fileDataSource = new FileDataSource(filePath) {
                @Override
                public String getContentType() {
                    return "application/pdf";
                }
            };
            attachmentPart.setDataHandler(new DataHandler(fileDataSource));
            attachmentPart.setFileName(filePath.getName());
            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(messagePart);
            multipart.addBodyPart(attachmentPart);
            message.setContent(multipart);
        } catch (Exception e) {
            e.printStackTrace();
        }

如何解决邮件发送中的javax.mail.MessagingException问题

1 个答案: