How to give inputstream as mail attachment in javamail
To send an InputStream
as an attachment in a JavaMail message, you can use the DataSource
class to wrap the InputStream
and then add it to the message using the MimeBodyPart
class.
Here's an example:
import javax.mail.*;
import javax.mail.internet.*;
import java.io.*;
// Create a new MimeMessage
MimeMessage msg = new MimeMessage(session);
// Set the message subject and from address
msg.setSubject("Test attachment");
msg.setFrom(new InternetAddress("[email protected]"));
// Create a new MimeBodyPart
MimeBodyPart mbp = new MimeBodyPart();
// Create a new DataSource to wrap the InputStream
DataSource ds = new ByteArrayDataSource(inputStream, "application/octet-stream");
// Set the DataSource as the attachment
mbp.setDataHandler(new DataHandler(ds));
// Add the attachment to the message
msg.setContent(mbp);
// Send the message
Transport.send(msg);
In this example, inputStream
is the InputStream
you want to send as an attachment. The ByteArrayDataSource
class is used to wrap the InputStream
and provide a DataSource
interface that JavaMail can use to read the attachment.
You can also use FileDataSource
if you have a file on disk and want to send it as an attachment.
DataSource ds = new FileDataSource("path/to/file", "application/octet-stream");
Make sure to set the correct MIME type for the attachment, which is application/octet-stream
for binary data.
You can also add multiple attachments to the message by creating multiple MimeBodyPart
objects and adding them to the message using the Multipart
class.
Multipart mp = new MimeMultipart();
mp.addBodyPart(mbp1);
mp.addBodyPart(mbp2);
msg.setContent(mp);