发送 SMTP 电子邮件时出现 AuthenticationFailedException 错误

Question

我尝试在 java 中发送 SMTP 电子邮件，但我遇到了这样的错误，而且我没有收到邮件。我关闭了所有的防火墙和杀毒软件。

错误：

javax.mail.AuthenticationFailedException: 534-5.7.14<https://accounts.google.com/ContinueSignIn?sarp=1&scc=1&plt=AKgnsbuIW

534-5.7.14 tAxHxbq4WR-vUuV1uOFAvx8NhInfxYTyNHi_8sJ80lX5lBdBla2ROiSKoysMNcFoQ6sGe
534-5.7.14 DUh173tDMolJ64W-Rahx1fhVF_08AvWrphibgQXiyyz5U1FNMMb-eGGJlUIbjyvBgQuZY6

534-5.7.14 tnykIXdVn__mg87aOmtxoss-EiFYeKdvuiBbt5eb9t_NOc97h-PkXOco-9FcYW69Iz9CTu

534-5.7.14 rfyhlo24k9oqIiWtcJwv85oUCO2g> Please log in via your web browser and

534-5.7.14 then try again.

534-5.7.14 Learn more at

534 5.7.14 https://support.google.com/mail/bin/answer.py?answer=78754 pd8sm1306363pdb.93 - gsmtp

这是我的代码：

private void btn_mailActionPerformed(java.awt.event.ActionEvent evt) {                                         

    String to = "receive.address@gmail.com";

    String from = "send.address@gmail.com";
    final String username = "send.address";
    final String password = "sendpassword";
    String host = "smtp.gmail.com";
    Properties pro = new Properties();
    pro.put("mail.smtp.host",host);
    pro.put("mail.smtp.socketFactory.port","465");
     pro.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
    pro.put("mail.smtp.auth","true");
     pro.put("mail.smtp.port","465");
    Session session = Session.getInstance(pro,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication()
                {
                    return new PasswordAuthentication(username,password);
                }
            }

            );
    try 
    {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
        message.setSubject("test mail");
        message.setText("Hello how are you?");
        Transport.send(message);
        JOptionPane.showMessageDialog(null,"Send");

    } 
    catch (Exception e) {
        JOptionPane.showMessageDialog(null,e.toString());
        System.out.println(e.toString());
    }

Answer 1

从浏览器登录电子邮件并转到 this page。你会看到这个；

确保点击“打开”并重试您的代码。

Answer 2

我遇到了同样的问题。在对 Gmail 进行多次测试后，我发现问题在于 Gmail 需要 OAuth 登录，而不仅仅是密码。解决方案是使用 Gmail API. However, this is a very complicated solution that I won't go into too much detail about. If you are interested in this, read the first answer here。

但是，如果您想要一个简单的解决方案，我所做的只是切换到 Yahoo 帐户。因为 Yahoo 不使用相同的加密，所以它工作得很好。注意：不要忘记将 SMTP 服务器更改为 'smtp.mail.yahoo.com'，并将端口更改为“25”。

如果您想从头开始设置，只需按照 this tutorial to download the JavaMail API and Java Activation Framework。

然后您只需复制并粘贴我的代码，更改最上面的变量，一切都会正常！如果我遗漏了什么，请告诉我！谢谢！

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;

public class Mailer {

    public static void main(String[] args) {
        final String username = "your-email@yahoo.com";
        final String password = "your-password";
        final String recipient = "email-recipient";
        final String subject = "message-subject";
        final String emailmessage = "message";

        Properties props = new Properties();
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.host", "smtp.mail.yahoo.com");
        props.put("mail.smtp.port", "25");

        Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
          });

        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress(username));
            message.setRecipients(Message.RecipientType.TO,    InternetAddress.parse(recipient));
            message.setSubject(subject);
            message.setText(emailmessage);

            Transport.send(message);

            System.out.println("Done");

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

    }

}

发送 SMTP 电子邮件时出现 AuthenticationFailedException 错误

AuthenticationFailedException error while sending SMTP email

java

smtp

jakarta-mail