javax.mail 和附件的问题

Question

我想用 javax.mail 发送电子邮件。

它适用于 ubuntu 14.04 和 java 1.8。0_121 和 tomcat7

使用 ubuntu 18.04 和 java 1.8.0_181 和 tomcat8 我收到此错误：

Caused by: java.io.IOException: "text/html" DataContentHandler requires String object, was given object of type class javax.mail.internet.MimeMultipart

这是代码：

MimeMessage mex = new MimeMessage(session);
mex.setFrom(new InternetAddress(from));
mex.addRecipient(RecipientType.TO, new InternetAddress((String)((List)ccList).get(0)));
mex.setRecipients(RecipientType.BCC, from);
mex.setSubject(subject);

MimeMultipart var26 = new MimeMultipart();
MimeBodyPart attachBodyPart = new MimeBodyPart();
attachBodyPart.setText(messageBody);
var26.addBodyPart(attachBodyPart);
attachBodyPart = new MimeBodyPart();
byte[] data = baos.toByteArray();
new FileDataSource(fileName);
attachBodyPart.setDisposition("attachment");
attachBodyPart.setContent(data, "application/pdf");
attachBodyPart.setFileName(fileName);
var26.addBodyPart(attachBodyPart);
mex.setContent(var26, "text/html");
Transport transport = session.getTransport("smtp");
transport.connect(param.getSmtpHost(), from, pass);
transport.sendMessage(mex, mex.getAllRecipients());
transport.close();

你有什么想法吗？

Answer 1

很难相信同样的代码在任何地方都有效。

改变

attachBodyPart.setText(messageBody);

到

attachBodyPart.setText(messageBody, "html");

改变

mex.setContent(var26, "text/html");

到

mex.setContent(var26);

javax.mail 和附件的问题

Issue with javax.mail and attached file

jakarta-mail