gmail 为何显示使用通过 Amazon SES 发送的 MimeMessageHelper addInline 附加的图像的“无名”附件？

Question

When using Spring MimeMessageHelper to attach the icons using addInLine and sending with SES, some of the icons appear as 'noname' attachments.当使用 Spring MimeMessageHelper 使用 addInLine 附加图标并使用 SES 发送时，一些图标显示为“无名”附件。 These images seem to be random unused images from the same folder.这些图像似乎是同一文件夹中随机未使用的图像。

AddInLine code AddInLine 代码

    private void attachIconsInEmailBody(MimeMessageHelper messageHelper, String iconsPath) throws IOException,  MessagingException {
        Resource[] resources = resourcePatternResolver.getResources("classpath:" + iconsPath + "*.*");
        for (Resource attRes: resources) {
            String iconName = attRes.getFilename();
            messageHelper.addInline(iconName.split("\\.")[0], attRes);
        }

Email code Email代码

            MimeMessage message = new MimeMessage(session);
            MimeMessageHelper messageHelper = new MimeMessageHelper(message, true, "UTF-8");
            messageHelper.setFrom(new InternetAddress(emailObject.getSender()));
            messageHelper.setTo(InternetAddress.parse(emailObject.getRecipients()));
            messageHelper.setSubject(emailObject.getSubject());
            messageHelper.setText(htmlBody, true);
            messageHelper.setSentDate(new Date(System.currentTimeMillis()));

            // add all the icons in-line to display in the email body
            attachIconsInEmailBody(messageHelper,"static/logo/SG/");

Sendmail code:发送邮件代码：

            // send the email using the sendRawEmail API
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            message.writeTo(outputStream);
            RawMessage rawMessage = new RawMessage(ByteBuffer.wrap(outputStream.toByteArray()));
            SendRawEmailRequest rawEmailRequest = new SendRawEmailRequest(rawMessage);
            SendRawEmailResult emailResult = sesClient.sendRawEmail(rawEmailRequest);

            // set the response back in the email object for any further recon
            emailObject.setEmailResult(emailResult);
            outputStream.close();
            return emailResult;

Parts of html code: html部分代码：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
                                <td style="width: 40px; height: 120px;"><img
                                        src="cid:strauss_sg_blank1" style="height: 120px; width: 40px;"
                                        alt="strauss_sg_blank1">
                                </td>

                        <td valign="top"
                            style="width: 40px; height: 30px; background: #ffffff;"><img
                                src="cid:strauss_sg_blank2" style="height: 30px"
                                alt="strauss_sg_blank2"></td>
</body>
</html>

Logo Folder:徽标文件夹：

Email attachments: Email 附件：

Answer 1

I know it's a bit late to answer this question.我知道现在回答这个问题有点晚了。 I recently also experienced this issue while sending email using AWS SES.我最近在使用 AWS SES 发送 email 时也遇到了这个问题。 The reason is that the MimeMessageHelper does not set the filename for our inline images when it creates BodyPart from our images.原因是MimeMessageHelper在从我们的图像创建BodyPart时没有为我们的内联图像设置文件名。 The contentId it uses is twisted a bit with the prefix < and suffix > .它使用的contentId带有前缀<和后缀> 。 We may retrieve the corresponding BodyPart instance from the helper class by the following code:我们可以通过以下代码从帮助程序 class 中检索相应的BodyPart实例：

private void attachIconsInEmailBody(MimeMessageHelper messageHelper, String iconsPath) throws IOException,  MessagingException {
        Resource[] resources = resourcePatternResolver.getResources("classpath:" + iconsPath + "*.*");
        for (Resource attRes: resources) {
            String iconName = attRes.getFilename();
            String contentId = iconName.split("\\.")[0];
            messageHelper.addInline(contentId , attRes);
            messageHelper.getMimeMultipart().getBodyPart("<" + contentId + ">").setFileName(iconName);

        }
...

gmail 为何显示使用通过 Amazon SES 发送的 MimeMessageHelper addInline 附加的图像的“无名”附件？

问题描述

1 个解决方案

解决方案1
0 2022-01-14 08:00:13

gmail 为何显示使用通过 Amazon SES 发送的 MimeMessageHelper addInline 附加的图像的“无名”附件？

问题描述

1 个解决方案

解决方案1 0 2022-01-14 08:00:13

解决方案1
0 2022-01-14 08:00:13