JavaMail javax.mail.AuthenticationFailedException

Question

我不熟悉这个在java中发送邮件的功能。我在注册后发送电子邮件以确认用户时遇到错误。

下面是 TextMail 中的代码:

public class TextMail extends HttpServlet {

static String sender_email = "abc@gmail.com";
static String password = "aaaa1111";
static String host = "smtp.gmail.com";
static String port = "465";

private static class MailAuthenticator extends javax.mail.Authenticator {

    @Override
    public PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(sender_email, password);
    }
}

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");

    try {
        System.out.println("inside textmail");

        System.out.println(request.getParameter("to"));
        System.out.println(request.getParameter("text"));
        System.out.println(request.getParameter("subject"));

        String to = request.getParameter("to");
        String text = request.getParameter("text");
        String subject = request.getParameter("subject");

        Properties props = new Properties();
        props.put("mail.smtp.user", sender_email);
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.port", port);
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.socketFactory.port", port);
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");

        Authenticator auth = new MailAuthenticator();
        Session session = Session.getInstance(props, auth);

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress(sender_email));
        message.setSubject(subject);
        message.setText(text);

        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

        Transport.send(message);
        System.out.println("execute textmail");
    } catch (Exception mex) {
        throw new ServletException(mex);
    }
}

上述代码的参数是从另一个servlet发送的:

response.sendRedirect("TextMail?to="+ul.getEmail()+"&text=path?UID="+u.getIduser()+"&subject=Comfirmation");

这些参数成功传递到 TextMail

Answer 1

您混合了 TLS 和 SSL 配置，这是不正确的。您需要选择要使用的一个。特别是，如果您想使用 SSL，您应该使用如下内容:

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");

或者如果您想使用 TLS，您可以使用如下内容:

Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");

另请注意，您无法使用经典 Gmail 凭据通过客户端发送电子邮件，但您应该为此目的设置应用程序专用密码(有关详细信息，请参阅 https://support.google.com/accounts/answer/185833)

有关配置通用邮件客户端以使用 gmail 的详细信息，请查看 https://support.google.com/mail/answer/13287

经过上述考虑，您可以在 http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example 看到两个有效的 java 示例。