Question

我使用以下代码与图像一起发送电子邮件，它运行正常。当我发送图像时，它会显示在正文中而不是附加在电子邮件中。因此，我可以轻松地从附件中下载该图像。

有没有办法在电子邮件中的附件图像中添加图像而不是在正文中存在的图像？

package com.tutorialspoint;

import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendInlineImagesInEmail
{
    public static void main(String[] args)
    {
        // Recipient's email ID needs to be mentioned.
        String to = "destinationemail@gmail.com";

        // Sender's email ID needs to be mentioned
        String from = "fromemail@gmail.com";
        final String username = "manishaspatil"; //change accordingly
        final String password = "******"; //change accordingly

        // Assuming you are sending email through relay.jangosmtp.net
        String host = "relay.jangosmtp.net";

        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");

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

        try {
            // Create a default MimeMessage object.
            Message message = new MimeMessage(session);

            // Set From: header field of the header.
            message.setFrom(new InternetAddress(from));

            // Set To: header field of the header.
            message.setRecipients(Message.RecipientType.TO,
            InternetAddress.parse(to));

            // Set Subject: header field
            message.setSubject("Testing Subject");

            // This mail has 2 part, the BODY and the embedded image
            MimeMultipart multipart = new MimeMultipart("related");

            // first part (the html)
            BodyPart messageBodyPart = new MimeBodyPart();
            String htmlText = "<H1>Hello</H1><img src=\"cid:image\">";
            messageBodyPart.setContent(htmlText, "text/html");
            // add it
            multipart.addBodyPart(messageBodyPart);

            // second part (the image)
            messageBodyPart = new MimeBodyPart();
            DataSource fds = new FileDataSource(
                "/home/manisha/javamail-mini-logo.png");

            messageBodyPart.setDataHandler(new DataHandler(fds));
            messageBodyPart.setHeader("Content-ID", "<image>");

            // add image to the multipart
            multipart.addBodyPart(messageBodyPart);

            // put everything together
            message.setContent(multipart);
            // Send message
            Transport.send(message);

            System.out.println("Sent message successfully....");

        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}

Answer 1

要将图像添加为附件，请使用FileDataSource。

    // Set a file as an attachment
    public static void setFileAsAttachment(Message msg, String filename)
             throws MessagingException {

        // Create and fill first part
        MimeBodyPart p1 = new MimeBodyPart();
        p1.setText("This is part one of a test multipart e-mail." +
                    "The second part is file as an attachment");

        // Create second part
        MimeBodyPart p2 = new MimeBodyPart();

        // Put a file in the second part
        FileDataSource fds = new FileDataSource(filename);
        p2.setDataHandler(new DataHandler(fds));
        p2.setFileName(fds.getName());

        // Create the Multipart.  Add BodyParts to it.
        Multipart mp = new MimeMultipart();
        mp.addBodyPart(p1);
        mp.addBodyPart(p2);

        // Set Multipart as the message's content
        msg.setContent(mp);
    }

传递你的形象路径，

setFileAsAttachment(msg, "<path here>");

使用JavaMail API发送带有内嵌图像的电子邮件

1 个答案: