小编use*_*053的帖子

我在这里和其他地方搜索了几个相关的帖子,但没有一个解决了我的问题.我有一个程序使用"javamail API"向一组人发送电子邮件.它工作得很好.今天我再次需要,但我无法发送任何电子邮件...我的sendEmail方法如下:

public void sendEmail(String userName, String password, String toAddress, 
       String subject, String message, String[] attachFiles) 
       throws AddressException, MessagingException {

     // sets SMTP properties
    Properties properties = new Properties();
    properties.put("mail.smtp.host", "smtp.gmail.com");
    properties.put("mail.smtp.port", "587");
    properties.put("mail.smtp.auth", "true");
    properties.put("mail.smtp.starttls.enable", "true");
    properties.put("mail.user", userName);
    properties.put("mail.password", password);

    // creates a new session with an authenticator
    Authenticator auth = new SMTPAuthenticator(userName, password);
    Session session = Session.getInstance(properties, auth);

    // creates a new e-mail message
    MimeMessage msg = new MimeMessage(session);

    try {
        msg.setFrom(new InternetAddress(userName, "My name"));
    } catch (UnsupportedEncodingException …