Looks like you're right. As far as I know there are no hidden methods. Another workaround for this limitation could be to store incoming images in the data store on an incoming email, then reference them in the emails that get sent out. It's not ideal, but it may be the solution to what you are looking for.
On Wed, Nov 18, 2009 at 3:36 PM, mably <fm2...@mably.com> wrote: > I haven't found a way to set a Content-ID header on a mimebodypart/ > attachment using the low-level API. The MailService.Attachment class > is quite rudimentary (only filename and data). > > May be some part of the low level API are still undocumented ? > > Thanx for all. > > On Nov 19, 12:25 am, "Ikai L (Google)" <ika...@google.com> wrote: > > That's good information to know. We are not using Sun's JavaMail > > implementation, so it's possible there are points of incompatibility. > > There's one last thing you may want to try: > > > > http://code.google.com/appengine/docs/java/javadoc/com/google/appengi... > > > > The above page documents the Low-Level API. Try creating an email object > via > > that API, setting the Content-ID of the attachment and the HTML tag to > point > > to the cid. You're already doing that in the example you sent using > > javax.mail, but I'm wondering if the low-level API is capable of doing > this. > > If not, I'll open an issue. > > > > On Wed, Nov 18, 2009 at 3:06 PM, mably <fm2...@mably.com> wrote: > > > Of course, the code above doesn't need to be run in mail handler > > > servlet :-) > > > > > On Nov 19, 12:01 am, mably <fm2...@mably.com> wrote: > > > > I've written a simple class sending an HTML email with an embedded > > > > image (cf. below) via GMail SMTP. It works perfectly fine when run > > > > locally from Eclipse. > > > > > > The same code in a GAE mail servlet handler produce the infamous > > > > "Converting attachment data failed" error. > > > > > > So it really seems to be a problem in GAE javamail implementation. > > > > > > /* > > > > * Copyright (C) 2009 Francois Masurel > > > > * > > > > * This program is free software: you can redistribute it and/or > > > > modify > > > > * it under the terms of the GNU General Public License as published > > > > by > > > > * the Free Software Foundation, either version 3 of the License, or > > > > * any later version. > > > > * > > > > * This program is distributed in the hope that it will be useful, > > > > * but WITHOUT ANY WARRANTY; without even the implied warranty of > > > > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > > > * GNU General Public License for more details. > > > > * > > > > * You should have received a copy of the GNU General Public License > > > > * along with this program. If not, see < > http://www.gnu.org/licenses/>. > > > > > > */ > > > > > > import java.io.ByteArrayOutputStream; > > > > import java.io.IOException; > > > > import java.io.InputStream; > > > > import java.util.Properties; > > > > > > import javax.mail.Message; > > > > import javax.mail.Multipart; > > > > 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; > > > > > > /** > > > > * @author Francois > > > > * > > > > */ > > > > public class GMailSMTP { > > > > > > private static final String SMTP_HOST_NAME = "smtp.gmail.com"; > > > > private static final int SMTP_HOST_PORT = 465; > > > > private static final String SMTP_AUTH_USER = "x...@gmail.com"; > > > > private static final String SMTP_AUTH_PWD = "yyy"; > > > > > > public static void main(String[] args) throws Exception{ > > > > new GMailSMTP().test(); > > > > } > > > > > > public void test() throws Exception{ > > > > Properties props = new Properties(); > > > > > > props.put("mail.transport.protocol", "smtps"); > > > > props.put("mail.smtps.host", SMTP_HOST_NAME); > > > > props.put("mail.smtps.auth", "true"); > > > > // props.put("mail.smtps.quitwait", "false"); > > > > > > String from = SMTP_AUTH_USER; > > > > String to = SMTP_AUTH_USER; > > > > String subject = "Testing SMTP-SSL"; > > > > String htmlText = "<h1>Hello</h1><img src=\"cid:image\">"; > > > > byte[] imgData = this.obtainByteData("enveloppe.gif"); > > > > > > Session mailSession = Session.getDefaultInstance(props); > > > > mailSession.setDebug(true); > > > > > > Message msg = new MimeMessage(mailSession); > > > > msg.setFrom(new InternetAddress(from)); > > > > msg.addRecipient(Message.RecipientType.TO, new > InternetAddress > > > > (to)); > > > > msg.setSubject(subject); > > > > > > Multipart mp = new MimeMultipart("related"); > > > > > > MimeBodyPart htmlPart = new MimeBodyPart(); > > > > htmlPart.setContent(htmlText, "text/html"); > > > > mp.addBodyPart(htmlPart); > > > > > > MimeBodyPart attachment = new MimeBodyPart(); > > > > attachment.setFileName("test.gif"); > > > > attachment.setContent(imgData, "image/gif"); > > > > attachment.setHeader("Content-ID","<image>"); > > > > mp.addBodyPart(attachment); > > > > > > msg.setContent(mp); > > > > > > Transport transport = mailSession.getTransport(); > > > > > > transport.connect > > > > (SMTP_HOST_NAME, SMTP_HOST_PORT, SMTP_AUTH_USER, > > > > SMTP_AUTH_PWD); > > > > > > transport.sendMessage(msg, > > > > msg.getRecipients(Message.RecipientType.TO)); > > > > > > transport.close(); > > > > } > > > > > > /** > > > > * Constructs a byte array and fills it with data that is read > > > > from the > > > > * specified resource. > > > > * @param filename the path to the resource > > > > * @return the specified resource as a byte array > > > > * @throws java.io.IOException if the resource cannot be read, or > > > > the > > > > * bytes cannot be written, or the streams cannot be closed > > > > */ > > > > private byte[] obtainByteData(String filename) throws IOException > > > > { > > > > InputStream inputStream = getClass().getResourceAsStream > > > > (filename); > > > > ByteArrayOutputStream outputStream = new > ByteArrayOutputStream > > > > (1024); > > > > byte[] bytes = new byte[512]; > > > > > > // Read bytes from the input stream in bytes.length-sized > > > > chunks and write > > > > // them into the output stream > > > > int readBytes; > > > > while ((readBytes = inputStream.read(bytes)) > 0) { > > > > outputStream.write(bytes, 0, readBytes); > > > > } > > > > > > // Convert the contents of the output stream into a byte > array > > > > byte[] byteData = outputStream.toByteArray(); > > > > > > // Close the streams > > > > inputStream.close(); > > > > outputStream.close(); > > > > > > return byteData; > > > > } > > > > > > } > > > > > > On Nov 18, 11:11 pm, "Ikai L (Google)" <ika...@google.com> wrote: > > > > > > > What I mean is, is this code working on a different mail server? > > > > > > > On Wed, Nov 18, 2009 at 2:00 PM, mably <fm2...@mably.com> wrote: > > > > > > I'm just sending a simple mail from my Gmail account with an > embedded > > > > > > gif image. > > > > > > > > I can perfectly read it from my mail servlet handler but when I > try > > > to > > > > > > relay it (cf. code from first message) I get this annoying > > > "Converting > > > > > > attachment data failed" error which seems to be specific to GAE. > > > > > > > > Here is the mail sent data : > > > > > > > > MIME-Version: 1.0 > > > > > > Sender: x...@gmail.com > > > > > > Received: by 10.142.204.15 with HTTP; Wed, 18 Nov 2009 13:57:20 > -0800 > > > > > > (PST) > > > > > > Date: Wed, 18 Nov 2009 22:57:20 +0100 > > > > > > Delivered-To: x...@gmail.com > > > > > > X-Google-Sender-Auth: c9f34852bdb4f249 > > > > > > Message-ID: > > > > > > <75c1488c0911181357w4e8efdc2r7e82d8e1c3e03...@mail.gmail.com> > > > > > > Subject: Test > > > > > > From: Francois MASUREL <x...@mably.com> > > > > > > To: contact-test <contact-t...@webwinewatch.appspotmail.com> > > > > > > Content-Type: multipart/related; > > > boundary=001636e90e61aa516e0478ac5398 > > > > > > > > --001636e90e61aa516e0478ac5398 > > > > > > Content-Type: multipart/alternative; > > > > > > boundary=001636e90e61aa516b0478ac5397 > > > > > > > > --001636e90e61aa516b0478ac5397 > > > > > > Content-Type: text/plain; charset=UTF-8 > > > > > > > > [image: > > > > > > ? > > > > > > ui=2&view=att&th=125094c9bff3199b&attid=0.1&disp=attd&realattid=ii_125094c9bff3199b&zw] > > > > > > > > --001636e90e61aa516b0478ac5397 > > > > > > Content-Type: text/html; charset=UTF-8 > > > > > > Content-Transfer-Encoding: quoted-printable > > > > > > > > <img title=3D"? > > > > > > ui=3D2&view=3Datt&th=3D125094c9bff3199b&attid=3D= > > > > > > 0.1&disp=3Dattd&realattid=3Dii_125094c9bff3199b&zw" > > > > > > alt=3D"?ui= > > > > > > =3D2&view=3Datt&th=3D125094c9bff3199b&attid=3D0.1&disp=3Dat= > > > > > > td&realattid=3Dii_125094c9bff3199b&zw" > > > > > > src=3D"cid:ii_125094c9bff319= > > > > > > 9b"><br> > > > > > > <br> > > > > > > > > --001636e90e61aa516b0478ac5397-- > > > > > > --001636e90e61aa516e0478ac5398 > > > > > > Content-Type: image/gif; name="enveloppe.gif" > > > > > > Content-Transfer-Encoding: base64 > > > > > > Content-ID: <ii_125094c9bff3199b> > > > > > > X-Attachment-Id: ii_125094c9bff3199b > > > > > > > > R0lGODlhEAAQAPeYAP39/tHR5MrK4fLy99PT6NfX6Nvb6/ > > > > > > f3+ff3+uDg7sPD3fHx9ra206qqyrKy > > > > > > 0eLi8Onp8bCwz > > > > > > +jo8cvL4WVlm7y81cLC2fPz96ysyrCwzcXF3c7O487O4tDQ5Le30+fn8cvL4ufn > > > > > > 8PDw9/Ly+fDw9PLy+N7e66Skx8/ > > > > > > P46mpymBglNLS5KKixoWFsYaGs56ewNXV5pqawKyszuTk7pyc > > > > > > wdra6Pr6/ > > > > > > > Ht7qnt7qXl5qry82LGx0MbG3pCQsrOz0qyszZubucjI3eLi7eDg6eDg7X5+rJSUu9zc > > > > > > 54uLtvz8/b+/2KenyPX1+K6uzpmZwOvr9a6uz8XF3Ovr9tLS5uPj8Hx8qvv7/ > > > > > > ZiYwLm50NPT5tjY > > > > > > 6K+v0M7O5IGBqtzc68/ > > > > > > P3mpqnoeHsLCwynJypNjY60ZGgJ2dw1hYjc7O4bi40nh4qWlpnNjY5fn5 > > > > > > +5SUvcTE2oCAqbOz0Le31tzc7L292vj4+sPD2by81unp8s/P5s3N3fPz > > > > > > +VxckqOjyHZ2psLC23p6 > > > > > > pt3d7d7e7PDw+L292JOTu/z8/Kury7Ozyra20ubm8MTE1/b2/Pn5/ > > > > > > Hd3qJCQvOnp876+2tHR5tHR > > > > > > 4oaGrbW10pmZv/7+/v/// > > > > > > wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > > > > > > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > > > > > > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > > > > > > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > > > > > > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > > > > > > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAJgALAAAAAAQABAA > > > > > > AAjlADEJHCiwzSQjamYQXIjAAo0fAq5gWChwgB03PiBdkhDkxgKCITywiLLn0qUkU2A4ESPQRKIm > > > > ... > > > > read more ยป > > -- > > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=. > > > -- Ikai Lan Developer Programs Engineer, Google App Engine -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. 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