Question

我正在尝试从我的jsf页面发送邮件。这是我的方法：

public String voegGroepToe()
{
    String resultaat = "overzichtGroepEnProject";
    if(project.getGroepen().size()<project.getMaxAantalGroepen())        
        project.voegGroepToe(groep);

    for(Student s : groep.getStudenten())
    {

    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.live.com");
    props.put("mail.smtp.port", "587");

    Session mailSession = Session.getDefaultInstance(props);
    Message simpleMessage = new MimeMessage(mailSession);

    InternetAddress fromAddress = null;
    InternetAddress toAddress = null;
    try {
        fromAddress = new InternetAddress(from);
        toAddress = new InternetAddress(s.getEmail());
    } catch (AddressException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {
        simpleMessage.setFrom(fromAddress);
        simpleMessage.setRecipient(RecipientType.TO, toAddress);
        simpleMessage.setSubject(subject);
        simpleMessage.setText(message);

        Transport.send(simpleMessage);          
    } catch (MessagingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    }

    return resultaat;
}

resultaat是应用程序在发送电子邮件后应该访问的jsf页面。 groep意味着与学生一起组。邮件应该发送给该组的每个学生。 from =“myownemailadress@hotmail.com”

但这不起作用，它没有给出错误消息，看起来它被卡在了Transport.send ......我做错了什么？

Answer 1

您希望在循环之前只连接一次，然后在循环内使用Transport#sendMessage()发送每条消息，然后在循环之后关闭连接 。第二个问题是你似乎没有在任何地方传递用户名/密码。

这是你应该怎么做的：

String host = "smtp.live.com"; int port = 587; String username = "you@live.com"; String password = "yourpassword"; Properties props = new Properties(); props.put("mail.smtp.host", host); props.put("mail.smtp.port", String.valueOf(port)); Session mailSession = Session.getDefaultInstance(props); Transport transport = null; try { transport = mailSession.getTransport("smtp"); transport.connect(host, username, password); InternetAddress fromAddress = new InternetAddress(from); for (Student s : groep.getStudenten()) { InternetAddress[] toAddresses = { new InternetAddress(s.getEmail()) }; Message simpleMessage = new MimeMessage(mailSession); simpleMessage.setFrom(fromAddress); simpleMessage.setRecipients(RecipientType.TO, toAddresses); simpleMessage.setSubject(subject); simpleMessage.setText(message); simpleMessage.setSentDate(new Date()); // Otherwise you end up in junk. simpleMessage.saveChanges(); // Transport#sendMessage() doesn't do it. transport.sendMessage(simpleMessage, toAddresses); } } catch (MessagingException e) { // Handle it! Display a FacesMessage or something. } finally { if (transport != null) try { transport.close(); } catch (MessagingException ignore) {} }

（我不保证它会以这种方式工作，我没有使用Live.com SMTP服务器的经验，也许你需要额外的Authenticator）

作为完全不同的替代方案，您还可以向groupname@yourdomain.com发送一条消息，并将所有收件人作为BCC发送。

另见：

JavaMail Fundamentals - Transport

请注意，此问题与JSF完全无关。在使用main()方法的普通Java类中执行此操作时，您会遇到完全相同的问题。

如何将相同的邮件发送给组的每个收件人？

1 个答案:

另见：