使用javax.mail与ssl发送电子邮件

Question

我想使用gmail作为smtp服务器发送电子邮件。

这是我的代码，我没有让它工作…运行testSettings（）之后，我得到了调试输出，然后它停止了。没有超时，没有错误，什么都没有。

public void testSettings() {
    final String username = Settings.get("benutzername");
    final String password = Settings.get("passwort");

    Properties props = new Properties();
    props.put("mail.transport.protocol", "smtps");

        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.socketFactory.port", Settings.get("port"));
        props.put("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");

    props.put("mail.smtp.auth", "true");

    props.put("mail.smtp.host", Settings.get("server"));
    props.put("mail.smtp.port", Settings.get("port"));
    props.put("mail.smtp.timeout", "10000");

    props.put("mail.smtp.ssl.checkserveridentity", "false");
    props.put("mail.smtp.ssl.trust", "*");
    props.put("mail.smtp.connectiontimeout", "10000");

    props.put("mail.smtp.debug", "true");
    props.put("mail.smtp.socketFactory.fallback", "false");
    Session session = Session.getInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username, password);
                }
            });
    session.setDebug(true);
    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("[e-mail]"));
        message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("[e-mail]"));
        message.setSubject("Testing Subject");
        message.setText("test");
        Transport transport = session.getTransport("smtps");
        transport.send(message);
        // Transport.send(message);

        System.out.println("Done");

    } catch (MessagingException e) {
        // throw new RuntimeException(e);
    }
}


DEBUG: setDebug: JavaMail version 1.4.7
DEBUG: getProvider() returning     javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Oracle]
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 587, isSSL false

发生以下错误：http :
//pastie.org/private/rkoknss6ppiufjd9swqta

Answer 1

代替

props.put（“ mail.transport.protocol”，“ smtps”）;

运输运输= session.getTransport（“ smtps”）;

用

props.put（“ mail.transport.protocol”，“ smtp”）;

运输运输= session.getTransport（“ smtp”）;

使用 smtp 而不是smtps

我使用了JDK 8，Netbeans 8，JavaMail 1.5.2，该示例 运行良好 ：

public static void main(String[] args) {
    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.socketFactory.port", "465");
    props.put("mail.smtp.socketFactory.class",
            "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.port", "465"); 
    Session session = Session.getDefaultInstance(props,
        new javax.mail.Authenticator() {
                            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("[e-mail]","password");
            }
        });

    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("[e-mail]"));
        message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("[e-mail]"));
        message.setSubject("Testing Subject");
        message.setText("Test Mail");

        Transport.send(message);

        System.out.println("Done");

    } catch (MessagingException e) {
        throw new RuntimeException(e);
    }
}

如果您无法连接端口465，请尝试端口587