Question

为什么发送邮件和附件无效当我使用下面的代码时，它将发送邮件和附件，但不发送消息。有谁知道为什么或怎么做？

工作代码，我使用过Java Mail 1.4.7 jar。

import java.util.Properties;
import javax.activation.*;
import javax.mail.*;

public class MailProjectClass {

public static void main(String[] args) {

    final String username = "your.mail.id@gmail.com";
    final String password = "your.password";

    Properties props = new Properties();
    props.put("mail.smtp.auth", true);
    props.put("mail.smtp.starttls.enable", true);
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");

    Session session = Session.getInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username, password);
                }
            });

    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("from.mail.id@gmail.com"));
        message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("to.mail.id@gmail.com"));
        message.setSubject("Testing Subject");
        message.setText("PFA");

        MimeBodyPart messageBodyPart = new MimeBodyPart();

        Multipart multipart = new MimeMultipart();

        messageBodyPart = new MimeBodyPart();
        String file = "path of file to be attached";
        String fileName = "attachmentName";
        DataSource source = new FileDataSource(file);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName(fileName);
        multipart.addBodyPart(messageBodyPart);

        message.setContent(multipart);

        System.out.println("Sending");

        Transport.send(message);

        System.out.println("Done");

    } catch (MessagingException e) {
        e.printStackTrace();
    }
  }
}

Answer 1

您需要将电子邮件正文添加为单独的多部分

String body="Email body template";
MimeBodyPart mailBody = new MimeBodyPart();
mailBody.setText(body);
multipart.addBodyPart(mailBody);

Answer 2

考虑到您错过;此处String fileName = "attachmentName"作为拼写错误。

但除此之外，你的代码完全正常。

发送附件和邮件的邮件

2 个答案: