/**
* Process the MimeMessage for signed mail with/without attachment.
*
* @param mime
* @param mailMsg
* @return
* @throws MessagingException
* @throws IOException
* @throws ParseException
*/
private String processSignedMail(MimeMessage mime, MailMessage mailMsg)
throws IOException, MessagingException, ParseException {
this.setMailBasicInfoForMailMsg(mime, mailMsg);
String txtBody = null;
String htmlBody = null;
// Get the content of the messsage, it's an Multipart object like a package including all the
// email text and attachment.
Multipart multi1 = (Multipart) mime.getContent();
// process each part in order.
for (int i = 0, n = multi1.getCount(); i < n; i++) {
// unpack, get each part of Multipart, part 0 may email text and part 1 may attachment. Or it
// is another embedded Multipart.
Part part2 = multi1.getBodyPart(i);
// determine Part is email text or Multipart.
if (part2.getContent() instanceof Multipart) {
Multipart multi2 = (Multipart) part2.getContent();
// First, verify the quantity and size of attachments.
boolean isValidMailMsg = this.isValidMailMsg(multi2);
if (isValidMailMsg) {
// process the content in multi2.
for (int j = 0; j < multi2.getCount(); j++) {
Part part3 = multi2.getBodyPart(j);
if (part3.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part3.getDisposition())) {
txtBody = part3.getContent().toString();
} else if (part3.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part3.getDisposition())) {
htmlBody = part3.getContent().toString();
} else if (part3.isMimeType("multipart/alternative")) {
// generally if the content type multipart/alternative, it is email text.
if (part3.getContent() instanceof Multipart) {
Multipart multi3 = (Multipart) part3.getContent();
for (int k = 0; k < multi3.getCount(); k++) {
Part part4 = multi3.getBodyPart(k);
if (part4.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part4.getDisposition())) {
txtBody = part4.getContent().toString();
} else if (part4.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part4.getDisposition())) {
htmlBody = part4.getContent().toString();
}
}
}
} else if (part3.isMimeType("multipart/related")) {
if (part3.getContent() instanceof Multipart) {
Multipart multi3 = (Multipart) part3.getContent();
for (int m = 0; m < multi3.getCount(); m++) {
Part part4 = multi3.getBodyPart(m);
if (part4.isMimeType("multipart/alternative")) {
if (part4.getContent() instanceof Multipart) {
Multipart multi4 = (Multipart) part4.getContent();
for (int p = 0; p < multi4.getCount(); p++) {
Part part5 = multi4.getBodyPart(p);
if (part5.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part5.getDisposition())) {
txtBody = part5.getContent().toString();
} else if (part5.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part5.getDisposition())) {
htmlBody = part5.getContent().toString();
}
}
}
} else {
// This is an embedded picture, set it as an attachment.
mailMsg.setHasAttachments(true);
}
}
}
} else {
String disposition = part3.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
mailMsg.setHasAttachments(true);
}
}
}
}
} else {
// This is a certificate file, set it as an attachment
String disposition = part2.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
mailMsg.setHasAttachments(true);
}
}
}
if (!isNull(txtBody)) {
mailMsg.setBody(txtBody);
} else {
mailMsg.setBody(htmlBody);
}
return JSONObject.fromObject(mailMsg).toString();
}
