无法在Google App Engine上发送电子邮件

Question

我曾尝试使用Javamail发送电子邮件.但是,我收到以下消息:

javax.mail.SendFailedException: Send failure (javax.mail.MessagingException: Illegal Arguments (java.lang.IllegalArgumentException: Bad Request: ))

我试图从管理员帐户(我用来上传应用程序)发送电子邮件,以及我登录到应用程序的用户帐户.(来自UserService - getCurrentUser().getEmail())都失败了.

我想知道是否有任何特殊设置我必须设置？

    Properties props = new Properties();
    Session session = Session.getDefaultInstance(props, null);    
    Message msg = new MimeMessage(session);
    UserService userService = UserServiceFactory.getUserService();
    String email = userService.getCurrentUser().getEmail();
    //Or
    //String email = "my_admin_account@gmail.com";
    msg.setFrom(new InternetAddress(email));
    msg.addRecipient(Message.RecipientType.TO,
                     new InternetAddress("some_test_email@gmail.com"));
    msg.setSubject("Test Email");
    msg.setText("Nobody");
    Transport.send(msg);

Answer 1

这真的很奇怪.我刚刚写了以下示例:

UserService userService = UserServiceFactory.getUserService();
String thisURL = request.getRequestURI();
if (request.getUserPrincipal() != null) {
    response.getWriter().println("<p>Hello, " +
                                request.getUserPrincipal().getName() +
                                "!  You can <a href=\"" +
                                userService.createLogoutURL(thisURL) +
                                "\">sign out</a>.</p>");
    Properties props = new Properties();
    Session mailSession = Session.getDefaultInstance(props, null);    
    Message msg = new MimeMessage(mailSession);
    String email = userService.getCurrentUser().getEmail();
    //Or
    //String email = "my_admin_account@gmail.com";
    msg.setFrom(new InternetAddress(email));
    msg.addRecipient(Message.RecipientType.TO,
                     new InternetAddress("jesse.sightler@gmail.com"));
    msg.setSubject("Test Email");
    msg.setText("Nobody");
    Transport.send(msg);
    response.getWriter().println("<p>Sent email!</p>");
} else {
    response.getWriter().println("<p>Please <a href=\"" +
                                userService.createLoginURL(thisURL) +
                                "\">sign in</a>.</p>");
}

没有例外,我确实收到了电子邮件.您确定实际应用程序中没有更多内容吗？