How to embed Base64 images into e-mail using JavaMail

I'm trying to send email from JavaMail using embedded Base64 images (IMG ALT = 'image PNG' SRC = 'data: image / PNG; Base64, ivborw0kgoaaansuheuga... Aelftksuqmcc')

It uses a small image, but when the image is large, the image will not be displayed in the lotus note

This is part of the code

Transport transport = mailSession.getTransport();
MimeMessage message = new MimeMessage( mailSession );
message.setSubject( subject );
message.setFrom( new InternetAddress( me) );
message.setContent( bodyWithEmbeddedBase64Image,"text/html" );
transport.connect();
transport.sendMessage( message,message.getAllRecipients() );
transport.close();`

I want to test it with the precoded mime bodypart, but I don't know how to use it. Can anyone help me:)?

Solution

Well, I found the answer. I don't know I did it right, but it worked normally

This is my code:

private static final Pattern imgRegExp  = Pattern.compile( "<img[^>]+src\\s*=\\s*['\"]([^'\"]+)['\"][^>]*>" );
public send(email) throws Exception{

   Map<String,String> inlineImage = new HashMap<String,String>();
   String body = email.getBody();
   final Matcher matcher = imgRegExp.matcher( body );
   int i = 0;
   while ( matcher.find() ) {
      String src = matcher.group();
      if ( body.indexOf( src ) != -1 ) {
         String srcToken = "src=\"";
         int x = src.indexOf( srcToken );
         int y = src.indexOf( "\"",x + srcToken.length() );
         String srcText = src.substring( x + srcToken.length(),y );
         String cid = "image" + i;
         String newSrc = src.replace( srcText,"cid:" + cid );
         inlineImage.put( cid,srcText.split( "," )[1] );
         body = body.replace( src,newSrc );
         i++;
      }
   }
   Transport transport = mailSession.getTransport();
   MimeMessage message = new MimeMessage( mailSession );
   message.setSubject( email.getObjet() );
   message.setSender( new InternetAddress( email.getSender() ) );
   message.setFrom( new InternetAddress( email.getFrom()) );
   BodyPart bp = new MimeBodyPart();
   bp.setContent( body,"text/html" );
   MimeMultipart mmp = new MimeMultipart();
   mmp.addBodyPart( bp );
   Iterator<Entry<String,String>> it = inlineImage.entrySet().iterator();
   while ( it.hasNext() ) {
      Entry<String,String> pairs = it.next();
      PreencodedMimeBodyPart pmp = new PreencodedMimeBodyPart( "base64" );
      pmp.setHeader( "Content-ID","<" + pairs.getKey() + ">" );
      pmp.setDisposition( MimeBodyPart.INLINE );
      pmp.setText( pairs.getValue() );
      mmp.addBodyPart( pmp );
   }
   message.setContent( mmp );
   message.addRecipient( Message.RecipientType.TO,new InternetAddress( email.getTo() ) );
   transport.connect();
   transport.sendMessage( message,message.getAllRecipients() );
   transport.close();
}

Thanks for helping me improve. If I need to improve:)