我在用 java 发送电子邮件时遇到运行时异常 UnsupportedDataTypeException
。这是异常的详细信息
Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: IOException while sending message;
nested exception is:
javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;
boundary="----=_Part_0_764977973.1480687764115"
如何解决这个异常?
我正在使用这段代码:完整代码
public static void main(String[] args) {
String senderMail = "inzi769@gmail.com";
String recepMail = "inzi.programmer@gmail.com";
String pass = "*********";
String host = "smtp.gmail.com";
String filePath = "C:\\Users\\Inzimam\\Desktop\\helicopter_final.png";
sendJavaMail(senderMail, pass, recepMail, host, filePath);
}
private static void sendJavaMail(String senderMail, String pass, String recepMail, String host, String filePath) {
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "25");
// Get the Session object.
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(senderMail, pass);
}
});
session.setDebug(true);
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(senderMail));
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recepMail));
message.setSubject("Subject here");
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText("This is message body");
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart);
messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filePath);
messageBodyPart.setDataHandler(new DataHandler(source));
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart);
SMTPTransport t = (SMTPTransport) session.getTransport("smtps");
t.connect("smtp.gmail.com", senderMail, pass);
t.sendMessage(message, message.getAllRecipients());
t.close();
// Transport.send(message);
JOptionPane.showMessageDialog(null, "Message has been sent successfully!.");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
有不对的地方请指出。 谢谢
最佳答案
首先我使用 Javamail API 1.4.6 但现在使用 Javamail API Version 1.5.0或更高版本,上面的相同代码可以正常工作。因此,现在使用 API 1.5.0,我可以成功发送附件。
编辑:当我使用API 1.4.6时
Transport.send(message);
它不起作用,但是对于 API 1.5.0 或更高版本,我们也可以使用
Transport.send(message);
而不是
SMTPTransport t = (SMTPTransport) session.getTransport("smtps");
t.connect("smtp.gmail.com", senderMail, pass);
t.sendMessage(message, message.getAllRecipients());
t.close();
关于Java:发送附件电子邮件时出现异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40934382/