Question

我已经编写了一个用于发送内嵌图像邮件的代码。

final MimeMessagePreparator messagePreparator = new MimeMessagePreparator() {
                @Override
                public void prepare(MimeMessage mimeMessage) throws Exception {
                    MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, MimeMessageHelper.MULTIPART_MODE_RELATED);
                    mimeMessageHelper.setTo(mailTo);

                    mimeMessageHelper.setSubject(subject);
                    mimeMessageHelper.setText(mailContent,true);
                    InternetAddress fromAddress = new InternetAddress(mailFromEmail,mailFromName);
                    mimeMessageHelper.setFrom(fromAddress);
                    for(String inlineImage : inlineImages) {
                        attachImage(mimeMessageHelper, inlineImage);
                    }

                }
            };

这段代码完美无缺。但后来需要以某种区域语言发送邮件，因此代码失败。所以我将代码更改为

final MimeMessagePreparator messagePreparator = new MimeMessagePreparator() {
                @Override
                public void prepare(MimeMessage mimeMessage) throws Exception {
                    MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, MimeMessageHelper.MULTIPART_MODE_RELATED);
                    mimeMessageHelper.setTo(mailTo);

                    /**
                     * for allowing UTF-8 encoding in mail body ie support for regional languages
                     */

                    MimeBodyPart att = new MimeBodyPart();
                    att.setText(mailContent, "UTF-8", "plain");
                    att.addHeader("Content-Type", "text/html; charset=UTF-8");

                    Multipart multipart = new MimeMultipart();
                    multipart.addBodyPart(att);
                    mimeMessage.setContent(multipart);

                    /**
                     * for allowing UTF-8 encoding in mail body ie support for regional languages ends
                     */

                    mimeMessageHelper.setSubject(subject);
//                    mimeMessageHelper.setText(mailContent,true);
                    InternetAddress fromAddress = new InternetAddress(mailFromEmail,mailFromName);
                    mimeMessageHelper.setFrom(fromAddress);
                    for(String inlineImage : inlineImages) {
                        attachImage(mimeMessageHelper, inlineImage);
                    }
                }
            };

attachImage方法是：

private void attachImage(MimeMessageHelper mimeMessageHelper,String imageName) throws MessagingException{
        mimeMessageHelper.addInline(imageName, new ClassPathResource("mailimg/" + imageName));
    }

现在语言显示正常，但内联图像没有附加。如果语言支持不是它的意思或其他任何东西，我不会得到。任何帮助将受到高度赞赏。

Answer 1

还原您对代码所做的更改，您似乎唯一想做的就是进行UTF-8编码。有更简单，更少侵入性的方法。

配置JavaMailSenderImpl。
将编码传递给MimeMessageHelper

第一种是侵入性最小的。只需在配置中添加一行（如果您使用的是XML），所有邮件都将使用UTF-8发送。将JavaMailSenderImpl的{{3}}属性设置为您要使用的编码。

<bean id="mailSender" class=org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="defaultEncoding" value="UTF-8" />
</bean>

第二个是更具侵入性，因为你必须改变代码。 MimeMessageHelper有defaultEncoding。您需要更改的（还原的）代码中唯一的一行是构造MimeMessageHelper。

MimeMessageHelper mimeMessageHelper = 
    new MimeMessageHelper(mimeMessage, MimeMessageHelper.MULTIPART_MODE_RELATED, "UTF-8");

无论哪种方式都应该为您提供UTF-8编码的电子邮件，并且要简单得多。

Spring Mail内联图像未附加

1 个答案: