Apache commons-email 1.4发送HtmlEmail而不翻译html标签，也看不到附件

Question

我正在使用Apache Commons Email 1.4发送带有附件pdf的html电子邮件。 但是，我收到的电子邮件是

<p>B600003292</p>
MIME-Version: 1.0
Content-Type: multipart/mixed;
        boundary="----=_Part_0_407006327.1513053130072"

------=_Part_0_407006327.1513053130072
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 7bit

<html><p>asdfb B600003292</p></html>
------=_Part_0_407006327.1513053130072
Content-Type: application/octet-stream; name=eee1_12122017043204284.pdf
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=eee1_12122017043204284.pdf
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------=_Part_0_407006327.1513053130072--

以上电子邮件中有三个问题。

1） <p>B600003292</p>应该是主题的一部分，应该是“ title is <p>B600003292</p> ”。 但是，现在的主题是“标题是”，并且您可以看到<p>B600003292</p>被显示为正文的第一行。 如何使主题变为html格式？

2）它有太多意外内容要写到电子邮件正文中，而我想要的实际正文内容“ <html><p>asdfb B600003292</p></html> ”属于这种<html><p>asdfb B600003292</p></html> ，不会转移到html格式的正文中。

3）没有附件。 我相信底部的加密代码是附件。 不知道为什么将其显示为正文而不是pdf。

下面是我的代码。

public void send(EmailType emailType) throws EmailException, MalformedURLException {
        org.apache.commons.mail.Email email;
        if (emailType == EmailType.SimpleEmail) {
            email = new SimpleEmail();
        } else if (emailType == EmailType.MultiPartEmail) {
            email = new MultiPartEmail();
            loadEmailAttachments(email);
        } else {
            email = new HtmlEmail();
            loadEmailAttachments(email);
        }
        email.setHostName(host);
        email.setSmtpPort(Integer.valueOf(port));
        //email.setAuthenticator(new DefaultAuthenticator(null, null));//.setAuthentication(new ());
        email.setCharset("utf-8");
        email.setFrom(from.getEmailAddress(), from.getDisplayName());
        for (TemplateEngineEmailer receiver : to) {
            email.addTo(receiver.getEmailAddress(), receiver.getDisplayName());
        }

        email.setSubject(subject);
        if (emailType == EmailType.HtmlEmail) {
            ((HtmlEmail) email).setHtmlMsg(body);
        } else {
            email.setMsg(body);
        }
        email.send();
    }

private void loadEmailAttachments(org.apache.commons.mail.Email email) throws EmailException, MalformedURLException {
    List<EmailAttachment> attachments = getEmailAttachment();
    if (attachments != null && !attachments.isEmpty()) {
        for (EmailAttachment attachment : attachments) {
            ((HtmlEmail) email).attach(attachment);
        }
    }
}

private List<EmailAttachment> getEmailAttachment() throws MalformedURLException {
    List<EmailAttachment> emailAttachments = new ArrayList<>();
    for (TemplateEngineAttachment attachment : attachments) {
        EmailAttachment emailAttachment = new EmailAttachment();
        if (attachment.isLocalFile()) {
            emailAttachment.setPath(attachment.getPath());
        } else {
            emailAttachment.setURL(new URL(attachment.getPath()));
        }
        emailAttachment.setDisposition(EmailAttachment.ATTACHMENT);
        emailAttachment.setDescription(attachment.getDescription());
        emailAttachment.setName(attachment.getName());
        emailAttachments.add(emailAttachment);
    }
    return emailAttachments;
}

Answer 1

事实证明，造成该主题的所有内容都是html标签<p>的原因。 删除后，一切正常。