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

【问题标题】：Apache commons-email 1.4 send HtmlEmail without translating html tag and also not see the attachmentApache commons-email 1.4 发送 HtmlEmail 而不翻译 html 标签，也看不到附件
【发布时间】：2018-05-25 17:19:54
【问题描述】：

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--

我在上述电子邮件中有三个问题。

1) B600003292 应该是主题的一部分，应该是“title is B600003292”。但是，现在，主题是“标题是”，正如您所见，B600003292 显示为正文的第一行。如何将主题设置为 html 格式？

2) 它有太多意想不到的内容被写入电子邮件正文，而我想要的实际正文内容“<html>asdfb B600003292</html>”是这种无意义的一部分，也没有被转移到 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。不知道为什么它显示为正文内容而不是 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;
}

【问题讨论】：

标签： java apache-commons-email

【解决方案1】：

事实证明，破坏一切的原因是主题中的html标签。一旦我删除它，一切正常。

【讨论】：