如何发送 HTML 电子邮件
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how to send HTML email
提问by Prerna
I have to send HTML file via email but not as attachment.
我必须通过电子邮件发送 HTML 文件，但不能作为附件发送。
Message simpleMessage = new MimeMessage(mailSession);
try {
fromAddress = new InternetAddress(from);
toAddress = new InternetAddress(to);
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
simpleMessage.setFrom(fromAddress);
simpleMessage.setRecipient(RecipientType.TO, toAddress);
simpleMessage.setSubject(subject);
simpleMessage.setText(text);
Transport.send(simpleMessage);
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
It is sending email simply with text message. I want to send HTML content which is stored in another file but not as attachment
它只是通过短信发送电子邮件。我想发送存储在另一个文件中但不是作为附件的 HTML 内容
回答by dkarp
Don't upcast your MimeMessageto Message:
不要向上推你MimeMessage的Message：
MimeMessage simpleMessage = new MimeMessage(mailSession);
Then, when you want to set the message body, either call
然后，当你想设置消息正文时，要么调用
simpleMessage.setText(text, "utf-8", "html");
or call
或打电话
simpleMessage.setContent(text, "text/html; charset=utf-8");
If you'd rather use a charset other than utf-8, substitute it in the appropriate place.
如果您更愿意使用 以外的字符集utf-8，请将其替换在适当的位置。
JavaMail has an extra, useless layer of abstraction that often leaves you holding classes like Multipart, Message, and Address, which all have much less functionality than the real subclasses (MimeMultipart, MimeMessage, and InternetAddress) that are actually getting constructed...
JavaMail 有一个额外的、无用的抽象层，它经常让你持有像Multipart,Message和 之类的类Address，这些类的功能都比实际构建的真正子类（MimeMultipart、MimeMessage、 和InternetAddress）少得多......
