java - Android使用smtp发送邮件到gmail

Question

Session session = null;
ProgressDialog pdialog = null;
Context context = null;
EditText reciep, sub, msg;
String rec, subject, textMessage;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.b9);

    context = this;

    Button login = (Button) findViewById(R.id.btn_submit);
    reciep = (EditText) findViewById(R.id.et_to);
    sub = (EditText) findViewById(R.id.et_sub);
    msg = (EditText) findViewById(R.id.et_text);

    login.setOnClickListener(this);
}

@Override
public void onClick(View v) {
    rec = reciep.getText().toString();
    subject = sub.getText().toString();
    textMessage = msg.getText().toString();
    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.socketFactory.port", "587");
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.port", "587");

    session = Session.getDefaultInstance(props, new Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("xyz@gmail.com", "xyz123");
        }
    });

    pdialog = ProgressDialog.show(context, "", "Sending Mail...", true);

    RetrieveFeedTask task = new RetrieveFeedTask();
    task.execute();
  }

检索提要任务

  class RetrieveFeedTask extends AsyncTask<String, Void, String> {

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

        try{
            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("xyz@gmail.com"));
            message.setRecipients(Message.RecipientType.TO, InternetAddress.
                    parse(rec));
            message.setSubject(subject);
            message.setContent(textMessage, "text/html; charset=utf-8");
            Transport.send(message);
        } catch(MessagingException e) {
            e.printStackTrace();
        } catch(Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(String result) {
        pdialog.dismiss();
        reciep.setText("");
        msg.setText("");
        sub.setText("");
        Toast.makeText(getApplicationContext(), "Message sent",        Toast.LENGTH_LONG).show();
    }
 }
}

我收到以下错误，我无法在收件箱中接收邮件

错误:

            javax.mail.MessagingException: Could not connect to SMTP host:         smtp.gmail.com, port: 587;
             nested exception is:
             avax.net.ssl.SSLHandshakeException: j        avax.net.ssl.SSLProtocolException: SSL     handshake aborted: ssl=0x755e6040:    Failure in SSL library, usually a protocol error
                                                                                                  at javax.mail.Service.connect(Service.java:310)
               at javax.mail.Service.connect(Service.java:169)
               at javax.mail.Service.connect(Service.java:118)
               at javax.mail.Transport.send0(Transport.java:188)
               at javax.mail.Transport.send(Transport.java:118)


               at android.os.AsyncTask$2.call(AsyncTask.java:288)
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
               at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
                      java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
               at      java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
               at java.lang.Thread.run(Thread.java:841)
               Caused by: javax.net.ssl.SSLHandshakeException:       javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x755e6040:     Failure in SSL library, usually a protocol error
               error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown     protocol   (external/openssl/ssl/s23_clnt.c:769 0x72fb0d74:0x00000000)
            at  mpl.getInputStream(OpenSSLSocketImpl.java:633)
﹕     
                 getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection
                    getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection
                   getSelectedText on inactive InputConnection

 getSelectedText on inactive InputConnection
 getTextBeforeCursor on inactive InputConnection

Answer 1

如果您使用的是 SSL，正确的端口是 465。587 用于 TLS

https://support.google.com/mail/answer/13287?hl=en

如果这不是问题，请尝试按照本教程进行操作

http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example/