【记录】邮件中文附件名称乱码

如下

 public void sendFinanceVerifyBill(String to, String subject,String content, String replyTo, String fileName, String filePath) {

        MimeMessage mimeMessage = mailSender.createMimeMessage();
        try {
            MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true);
            messageHelper.setFrom(from);
            messageHelper.setTo(to);
            messageHelper.setCc(replyTo);

            messageHelper.setReplyTo(replyTo);
            messageHelper.setSubject(subject);
            messageHelper.setText(content, true);

            FileSystemResource file = new FileSystemResource(filePath);
            fileName = MimeUtility.encodeWord(fileName, "utf-8", "B") + ".xlsx";
            messageHelper.addAttachment(fileName, file);
        } catch (MessagingException | UnsupportedEncodingException e) {
            throw new SysException(e.getMessage(), e);
        }

        mailSender.send(mimeMessage);
    }

2设置系统属性：

System.setProperty("mail.mime.splitlongparameters","false");