I extract the contents from the body part (BodyPart) as follows: bodyPart.getDataHandler().getDataSource().getInputStream() , I need to extract this way. I get an InputStream, I need to overtake it into a string without decoding (i.e. to remain "as is").
Sometimes there is 8-bit/7-bit encoding, sometimes base64 .
I tried all the methods from this article habr , but they modified the inputStream . Please tell me the solution.
Extract from original letter:
-Type: image/png; name=logo inline image Content-Disposition: inline; filename=logo inline image Content-Transfer-Encoding: base64 Content-ID: <logo> X-Attachment-Id: 7c408fe710f19880_0.1 iVBORw0KGgoAAAANSUhEUgAAAKMAAABdCAYAAADJ9NbpAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJ bWFnZVJlYWR5ccllPAAADwZJREFUeNrsnXt0FNUdx+/s5iWKGEsS5VHyEiFFCiYUscDRnlAPaq0S EiwIra9EIVRATxM8p9b2D5voUbDHF0FtrRICSXiILyQqPmqFGkSq8jDZBM07p4YISBKyM/3e2Vmy DHd3Z3ZmdrOb+zvnl3nszN3ZuZ/5vebORJAkiXDhMhjExk8BFw4jFy4qifJcEAQhoEYSth6lUMd1 3jLuh6F4EnmoM7gsI+2NvQlbGq7kp5RLSGGERaQw/gv6YWK141f8tHIJdcxYDh0G3ZZYVb+cn1ou ekXwjHcCjRnPxI2S2IgGxxLapiQ9BV3RkXeZk8eMXIJqGeGqRUw2eqwqhG5P3HTkAn6auQTbTVPZ Excerpt after translating to string:
PNG IHDR ] tEXtSoftwareAdobe ImageReadyq e<IDATx {t % K Q !E & Pj , D!T@O< Q Am Ix /$*>j D 0 ; H 3 Y wwgvfv ; y D $ p 2 O#.* \! F P u 2 xy 3 ,# [ KHa E 0 ab W ru X XU Z.zE w $=] w \ j EL6z * nO t ~ MS Z I G S % 0v K9 Sh T~ 2 # Q ^ O9M L o E4 -B a i0 c qTIbd E e<m Al $ ;x 0 g 