java mail API中的身份验证过程中出现错误

Question

以下是我的java mail API代码：

import java.io.File;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.internet.MimeMessage.RecipientType;
import javax.activation.*;

import hostel.BabyAuthenticator;

class BabyAuthenticator extends Authenticator
{
   @Override
   protected PasswordAuthentication

   getPasswordAuthentication() 
   {
     PasswordAuthentication pa = new 
     PasswordAuthentication("my email-id","password of my account"); 

     return pa;
   }
}

我尝试了2-3个不同的电子邮件id作为发件人id。。但仍然会发生错误。

  public class SendMail {
    public static void main(String[] args) {
      try 
      {
        Properties p = new Properties();

        p.put("mail.smtp.host","smtp.gmail.com");
        p.put("mail.smtp.port","587");
        p.put("mail.smtp.starttls.enable","true");
        p.put("mail.smtp.auth","true");
        p.put("mail.smtp.ssl.trust", "smtp.gmail.com");

        BabyAuthenticator auth = new BabyAuthenticator();
        Session session = Session.getInstance(p,auth);

        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress("sender's email id"));

        InternetAddress receiver1 = new InternetAddress("receiver's email id");
        InternetAddress[] rcvrs = {receiver1};

        // specify the the type of Recipients
        message.addRecipients(RecipientType.TO,rcvrs);

        // provide the subject of email
        message.setSubject("First mail");

        // create object of MimeBodyPart to denote the body parts of mail 
        MimeBodyPart part1 = new MimeBodyPart();

        // associate some text to the body part 
        part1.setContent("<i style='color : blue'>"+ "This is my first mail"+" 
            </i>","text/html");

        MimeMultipart allParts = new MimeMultipart();

        allParts.addBodyPart(part1);
        message.setContent(allParts);
        Transport.send(message);

        // show message on console
        System.out.println("Mail has been sent to the mail server...");  
      } 
      catch (Exception e) 
      {
       System.out.println("Some error has occured, and error is "+e);
      }
  }
} 

下面是代码的输出：

发生了一些错误，错误为javax。邮政AuthenticationFailedException：535-5.7.8不接受用户名和密码。在535 5.7.8了解更多信息https://support.google.com/mail/?p=BadCredentialsi72sm13717325pfj。147-gsmtp

Answer 1

我也遇到了这个问题，并通过以下方式解决了这个问题：

• 允许不太安全的应用程序访问您的谷歌帐户了解更多
• 切换到网络提供商，是的，这是真的，我尝试了3个网络提供商，发送/接收邮件适用于2个，但不适用于其他一个，所以我建议您也尝试切换网络提供商。