好的，我找到了答案，我不知道我做得对，但是工作正常 .

这是我的代码：

private static final Pattern imgRegExp = Pattern.compile( "]+src\\s*=\\s*['\"]([^'\"]+)['\"][^>]*>" );

public send(email) throws Exception{

Map inlineImage = new HashMap();

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> it = inlineImage.entrySet().iterator();

while ( it.hasNext() ) {

Entry pairs = it.next();

PreencodedMimeBodyPart pmp = new PreencodedMimeBodyPart( "base64" );

pmp.setHeader( "Content-ID", "" );

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();

}

感谢帮助我改进，如果需要改进:)