Question

我遇到了javax.mail的问题。我有一个来自Web服务的MultipartFile ArrayList，我必须添加到电子邮件作为附件。来源：

mailMessage.setSubject（主题）; mailMessage.setFrom（new InternetAddress（user））;

    if (attacchments != null && attacchments.size() > 0) {

        Multipart multipart = new MimeMultipart();
        BodyPart messageBodyPart1 = new MimeBodyPart();     
        messageBodyPart1.setText(text);   

        for(MultipartFile attachment : attacchments){

            DataSource datasource = new  ByteArrayDataSource(attachment.getInputStream(), attachment.getContentType()); 
            MimeBodyPart attachmentPart = new MimeBodyPart();

            attachmentPart.setDisposition(Part.ATTACHMENT);
            attachmentPart.setHeader("Content-Type", attachment.getContentType());
            attachmentPart.setHeader("Content-Transfer-Encoding", "Base64"); 

            attachmentPart.setFileName(MimeUtility.encodeText(attachment.getName() + ".pdf"));
            attachmentPart.setDataHandler(new DataHandler(datasource));

            multipart.addBodyPart(messageBodyPart1);
            multipart.addBodyPart(attachmentPart);
        }
        mailMessage.setContent(multipart);

        mailMessage.saveChanges();
    }

    Transport transport = mailSession.getTransport();
    transport.connect(SMTPServer, 465, user, password);
    transport.sendMessage(mailMessage, mailMessage.getAllRecipients());
    transport.close();

我没有例外，电子邮件正确到达内容文本，附件也到了。如果它是一个txt文件，如果它是一个图像它到达已损坏，如果它是一个pdf文件，它到达完全空白（但具有正确的页数）。此外，到达的文件具有大于原始的大小（例如，对于70kb为100kb）。你对此有什么想法吗？

提前谢谢

javax.mail：附件空白或已损坏

0 个答案: