Java Community | Help. Code. Learn.•9mo ago

Spring Boot Mail not sending attachments

I am building a Mail notifiaction system, that should attach PDF reports that are stored in an S3 bucket. I followed the documentation, but the attachment is not displayed by Outlook. Here is my code for actually sending the mail:

@Observed(name = "mail.send", contextualName = "sending-templated-mail")
    public void sendMailFromTemplate(MailInstance instance){
        // Loading a template
        try {
            // Conditioning metadata
            MimeMessage message = sender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
            helper.setTo(instance.dest());
            helper.setFrom(instance.src());
            helper.setSubject(subject);
            helper.addInline("logo", logoFile);
            message.setContent(result, "text/html");
            List<File> toClean = new ArrayList<>();
            instance.attachments().forEach(item -> {
                log.info(item);
                try {
                    InputStream stream = fileService.download("test-results", item);
                    File f = new File(scratch, item);
                    FileUtils.copyToFile(stream, f);
                    FileSystemResource resource = new FileSystemResource(f);
                    helper.addAttachment(item.split("/")[1], resource);
                    toClean.add(f);
                } catch (MessagingException e) {
                    throw new RuntimeException(e);
                }
            });
            sender.send(message);
            log.info("Cleaning cache directory");
            toClean.forEach(File::delete);
        } catch (MessagingException | TemplateException | IOException e) {
            throw new RuntimeException(e);
        }
    }

@Observed(name = "mail.send", contextualName = "sending-templated-mail")
    public void sendMailFromTemplate(MailInstance instance){
        // Loading a template
        try {
            // Conditioning metadata
            MimeMessage message = sender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
            helper.setTo(instance.dest());
            helper.setFrom(instance.src());
            helper.setSubject(subject);
            helper.addInline("logo", logoFile);
            message.setContent(result, "text/html");
            List<File> toClean = new ArrayList<>();
            instance.attachments().forEach(item -> {
                log.info(item);
                try {
                    InputStream stream = fileService.download("test-results", item);
                    File f = new File(scratch, item);
                    FileUtils.copyToFile(stream, f);
                    FileSystemResource resource = new FileSystemResource(f);
                    helper.addAttachment(item.split("/")[1], resource);
                    toClean.add(f);
                } catch (MessagingException e) {
                    throw new RuntimeException(e);
                }
            });
            sender.send(message);
            log.info("Cleaning cache directory");
            toClean.forEach(File::delete);
        } catch (MessagingException | TemplateException | IOException e) {
            throw new RuntimeException(e);
        }
    }

I don't know if this is a thing with outlook, or with my code.

1 Reply

JavaBot•9mo ago

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Spring Boot Mail not sending attachments