通过Java API发送邮件：即使附件失败，如何发送邮件？(Sending mail via Java API: How to send the mail even if attachment fails?)

 这是我的代码： 
 
try {
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
    message.setSubject(messageSubject);
    message.setText(messageBody);

    BodyPart messageBodyPart1 = new MimeBodyPart();
    messageBodyPart1.setText(messageBody);
    MimeBodyPart messageBodyPart2 = new MimeBodyPart();
    String filename = attachment;
    DataSource source = new FileDataSource(filename);
    messageBodyPart2.setDataHandler(new DataHandler(source));
    messageBodyPart2.setFileName(filename);
    Multipart multipart = new MimeMultipart();
    multipart.addBodyPart(messageBodyPart1);
    multipart.addBodyPart(messageBodyPart2);    
    message.setContent(multipart );

    Transport.send(message);
} catch (MessagingException mex) {
    mex.printStackTrace();
}
 
 即使邮件附件由于某种原因失败，我怎么还能发送电子邮件？ ATM如果附件失败，则不发送电子邮件，这在我的情况下是不好的。 我应该使用另一个try / catch语句吗？我最后也应该这样做吗？ 我是Java新手（3-4周） 
 
 编辑：将我的代码更改为此，但没有工作 
 
try {
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
    message.setSubject(messageSubject);
    message.setText(messageBody);

    try {
        BodyPart messageBodyPart1 = new MimeBodyPart();
        messageBodyPart1.setText(messageBody);
        MimeBodyPart messageBodyPart2 = new MimeBodyPart();
        String filename = attachment;
        DataSource source = new FileDataSource(filename);
        messageBodyPart2.setDataHandler(new DataHandler(source));
        messageBodyPart2.setFileName(filename);
        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(messageBodyPart1);
        multipart.addBodyPart(messageBodyPart2);    
        message.setContent(multipart);
    } catch (Exception e) {
        message.setText(messageBody2);
        e.printStackTrace();
    }

    Transport.send(message);

} catch (MessagingException mex) {
    mex.printStackTrace();
}

This is my code:
 
try {
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
    message.setSubject(messageSubject);
    message.setText(messageBody);

    BodyPart messageBodyPart1 = new MimeBodyPart();
    messageBodyPart1.setText(messageBody);
    MimeBodyPart messageBodyPart2 = new MimeBodyPart();
    String filename = attachment;
    DataSource source = new FileDataSource(filename);
    messageBodyPart2.setDataHandler(new DataHandler(source));
    messageBodyPart2.setFileName(filename);
    Multipart multipart = new MimeMultipart();
    multipart.addBodyPart(messageBodyPart1);
    multipart.addBodyPart(messageBodyPart2);    
    message.setContent(multipart );

    Transport.send(message);
} catch (MessagingException mex) {
    mex.printStackTrace();
}
 
How can I still send the email even if mail attachment fails for some reason? ATM if attachment fails, the email is not sent, which is bad in my case. Should I use another try/catch statement and should I have finally as well? Im new to Java (3-4 weeks)
 
edit: Changed my code to this, but didnt work
 
try {
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
    message.setSubject(messageSubject);
    message.setText(messageBody);

    try {
        BodyPart messageBodyPart1 = new MimeBodyPart();
        messageBodyPart1.setText(messageBody);
        MimeBodyPart messageBodyPart2 = new MimeBodyPart();
        String filename = attachment;
        DataSource source = new FileDataSource(filename);
        messageBodyPart2.setDataHandler(new DataHandler(source));
        messageBodyPart2.setFileName(filename);
        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(messageBodyPart1);
        multipart.addBodyPart(messageBodyPart2);    
        message.setContent(multipart);
    } catch (Exception e) {
        message.setText(messageBody2);
        e.printStackTrace();
    }

    Transport.send(message);

} catch (MessagingException mex) {
    mex.printStackTrace();
}

原文：https://stackoverflow.com/questions/18107716