必须首先发出STARTTLS命令。使用Java和Google Apps发送电子邮件

问题描述

我正在尝试使用来发送使用Google Apps的电子邮件。我收到这个错误：

I am trying to use Bill the Lizard's code to send an email using Google Apps. I am getting this error:

Exception in thread "main" javax.mail.SendFailedException: Sending failed;
  nested exception is:
    javax.mail.MessagingException: 530 5.7.0 Must issue a STARTTLS command first. f3sm9277120nfh.74

    at javax.mail.Transport.send0(Transport.java:219)
    at javax.mail.Transport.send(Transport.java:81)
    at SendMailUsingAuthentication.postMail(SendMailUsingAuthentication.java:81)
    at SendMailUsingAuthentication.main(SendMailUsingAuthentication.java:44)

Bill的代码包含下一行，这似乎与错误有关：

Bill's code contains the next line, which seems related to the error:

   props.put("mail.smtp.starttls.enable","true");

然而，这没有帮助。

这些是我的import语句：

These are my import statements:

import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

有没有人知道这个错误？

Does anyone know about this error?

推荐答案

我发现问题。以前我正在使用j2ee.jar来导入javax.mail。

I found the problem. Previously i was using j2ee.jar to import javax.mail.

我从类路径中删除了j2ee.jar，并下载了 1.4.1并放入我的classpath两个jar，smtp.jar和mailapi.jar。我现在使用 smtps 代替 smtp

I removed j2ee.jar from the classpath and downloaded JavaMail 1.4.1 and put into my classpath two jars, smtp.jar and mailapi.jar. I use now smtps instead smtp

Transport transport = session.getTransport("smtps");

现在，比尔蜥蜴的代码可以工作。

Now Bill the Lizard's code works.

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