Question

尝试编写java邮件API程序，但收到以下错误：

Could not connect to SMTP host: smtp.gmail.com, port: 587;
nested exception is:
java.net.ConnectException: Operation timed out

这是我写的java代码：

String HOST = "smtp.gmail.com";
String PORT = "587";
String USERNAME = "myname@gmail.com";
String PASSWORD = "myPassword";

Properties properties = System.getProperties();
    properties.put("mail.smtp.host", HOST);
    properties.put("mail.smtp.port", PORT);
    properties.put("mail.smtp.user", USERNAME);
    properties.put("mail.smtp.password", PASSWORD);


    Session session = Session.getDefaultInstance(properties);


    // 2) compose message
    try {
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(request.getSenderEmailId()));

        InternetAddress[] addressTo = new InternetAddress[request.getRecipients().size()];
        for (int i = 0; i < request.getRecipients().size(); i++) {
            addressTo[i] = new InternetAddress(request.getRecipients().get(i));
        }
        message.addRecipients(Message.RecipientType.TO, addressTo);

        // 3) create MimeBodyPart object and set your message text
        BodyPart messageBodyPart1 = new MimeBodyPart();

        // 4) create new MimeBodyPart object and set DataHandler object to
        // this object
        Multipart multipart = new MimeMultipart();

        messageBodyPart1.setContent(request.getContent(),
                EmailConstants.TYPE_HTML);
        message.setSubject(request.getSubject());
        multipart.addBodyPart(messageBodyPart1);
        // 6) set the multiplart object to the message object
        message.setContent(multipart);

        // 7) send message
        Transport.send(message);

    } catch (MessagingException ex) {
        ex.printStackTrace();
    }

现在我已经尝试了StackOverflow中可以找到的所有变体，但没有任何帮助。尝试MkYong.com Java Mail Example，但同样的错误。

同时将PORT更改为465并在属性中添加了这些语句，但问题仍然存在。

properties.put("mail.smtp.socketFactory.port", PORT);
properties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

有趣的是，我使用相同的代码从我的corp-account发送电子邮件，它运行正常。刚提供的公司主机名和端口为25，它正在运行。

我尝试将此部署到AWS账户不起作用的AWS，因此需要迁移到Gmail。

使用Java 8和Mail API是：

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4</version>
</dependency>

我试图在正在连接的smtp.gmail.com上ping，但当我 telnet smtp.gmail.com 587 时，它会继续尝试但是没有连接。

任何帮助都将不胜感激。

Answer 1

它对我有用：

public class AppConfig {
        @Bean
        public JavaMailSender getJavaMailSender() {
            log.info("Init mail sender bean");
            JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
            mailSender.setHost("smtp.gmail.com");
            mailSender.setPort(587);
            mailSender.setUsername("Username");
            mailSender.setPassword("Password");

            Properties props = mailSender.getJavaMailProperties();
            props.put("mail.transport.protocol", "smtp");
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.debug", "true");
            return mailSender;
        }
}
public class EmailSender {
..
      @Autowired
      public JavaMailSender emailSender;

      public void send(String from, String to, String subject, String body, boolean html) {
        try {
            MimeMessage message = createMimeMessage(subject);
            getMimeMessageHelper(from, to, subject, body, html, message, false);
            emailSender.send(message);
        } catch (Exception ex) {
        }
    }

Java Mail：在端口587上通过Gmail SMTP发送邮件时操作超时

1 个答案: