Question

对不起，我有一个问题。在JavaMail（1.4.7）的Android邮件发送编程开发中，MessagingException与SMTPTransport连接，程序异常终止。在使用3G和LTE时我没有成功，但在使用Wi-Fi超过十秒后失败了。

源代码如下。

Properties props = new Properties();
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.starttls.required", "true");
props.put("mail.smtp.sasl.enable", "false");
Session session = Session.getInstance(props);
session.setDebug(true);

SMTPTransport transport = new SMTPTransport(session, null);
transport.connect("smtp.gmail.com", 587, userEmail, null);

byte[] response = String.format("user=%s\1auth=Bearer %s\1\1", userEmail, oauthToken).getBytes();
response = BASE64EncoderStream.encode(response);

transport.issueCommand("AUTH XOAUTH2 " + new String(response), 235);
return transport;

错误如下

 javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 587;
       nested exception is:
         java.net.ConnectException: failed to connect to smtp.gmail.com/2404:6800:4008:c01::6c (port 587): connect failed: ECONNREFUSED (Connection refused)
         at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1391)
         at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412)
         at javax.mail.Service.connect(Service.java:288)

发送SSL邮件时的邮件异常

0 个答案: