Question

我在使用java邮件（1.4.6）在java中通过电子邮件发送附件时遇到问题。似乎当我附加任何类型的文档并发送它时，收件人在正文中以纯文本格式获取文件。而不是，你猜对了，发送整个文件就像你期望的那样，并且身体不会受到干扰。

代码

    try 
    {

        // Create a message
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(username));
        message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse(Compose.to));
        message.setSubject(Compose.subject);
        //message.setText(Compose.body);
        //If there are no CC's then skip it. This if seemed to decrease send time.
        if(Compose.cc != null)
        {
            message.setRecipients(Message.RecipientType.CC, InternetAddress.parse(Compose.cc));
            message.saveChanges();
        }
        else
            message.saveChanges();

        /*
         * For adding the attached file to the email. This time the if
         * statement is used to stop the email attachment process if there
         * is none. Other wise due to the way I've set it up it'll try to
         * send file path and file name as null, and we fail an otherwise valid email.
         */

        if(Compose.filename != null)
        {
            String file = Compose.filepath;
            String fileName = Compose.filename;

            Multipart multipart = new MimeMultipart();
            BodyPart messageBodyPart = new MimeBodyPart();
            DataSource source = new FileDataSource(file);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(fileName);
            multipart.addBodyPart(messageBodyPart);

            BodyPart messageBodyPart2 = new MimeBodyPart();
            messageBodyPart2.setText(Compose.body);
            multipart.addBodyPart(messageBodyPart2);

            message.setContent(multipart);
        }
        else
        {
            message.setText(Compose.body);
            message.saveChanges();
        }

        //Send the message by javax.mail.Transport .            
        Transport tr = session.getTransport("smtp");            // Get Transport object from session        
        tr.connect(smtphost, username, password);               // We need to connect
        tr.sendMessage(message, message.getAllRecipients());    // Send message

        //Notify the user everything functioned fine.
        JOptionPane.showMessageDialog(null, "Your mail has been sent.");

    }

考虑到这一点，我记得FileDataSource()是一个重载声明如何将字符串或文件类型作为参数，尝试两者我得到了相同的结果，但我现在将更多地尝试文件类型。

编辑：经过更多测试后，我注意到有时文件不会与发送时身体内的任何内容一起出现。

Answer 1

您将附件设置为第一个身体部位。它需要成为第二个身体部位。

另外，请考虑升级到JavaMail 1.5.4并使用MimeBodyPart.attachFile方法附加文件。

Answer 2

对于每个部分，您必须set disposition至Part.INLINE表示身体，Part.ATTACHMENT表示附件。 attachFile方法将为您完成。避免JavaMail 1.4.6支持最新版本或至少使用JavaMail 1.4.7，其中包含针对JavaMail 1.4.6的已知问题的修复。

java电子邮件附件作为纯文本发送到正文中

2 个答案: