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我編寫了下面的代碼發送帶附件的電子郵件。我能夠獲得附件，但電子郵件正文中的消息未到。我可以知道我做了什麼錯誤嗎？提前致謝 。電子郵件正文中的郵件未到來
的代碼如下所示
Session session = Session.getDefaultInstance(properties);
from = email;
Message msg = new MimeMessage(session);
// Instantiatee a message
//Set message attributes
msg.setFrom(new InternetAddress(from));
msg.addRecipients(Message.RecipientType.BCC,
InternetAddress.parse("[email protected]"));
//InternetAddress[] address = {new InternetAddress(to)};
InternetAddress[] address = {new InternetAddress(groupemail)};
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject("EIDMS Contact Us information ");
msg.setSentDate(new Date());
String prefix = "<html><body>";
StringBuilder sb= new StringBuilder(prefix);
Connection conn = connections();
Statement statement = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
System.out.println("inside if looppp ..................");
sb.append("[Title: "+helparea+"] <BR>"
+ "[SR Type:Incident]<BR>[Description: "+jsutify+"<BR> Firstname:"+firstname+" Lastname:"+lastname+"<BR> Org:"+org+" Email :"+email+" Index no:"+index+"]<BR>[Region:"+region+"]<BR>"
+ "[Area:"+area+"]<BR>[Source:Web]<BR>[Requested Item:"+requesteditem+"]<BR>[Sub-Area:"+subarea+"]<BR>[Sub-Area1:"+subarea1+"]<BR>"
+ "[Severity:3-Medium] <BR>[On Behalf Of Badge:"+index+"]<BR>[On Behalf Of Index:"+index+"]<BR>"
+ "[UNIN On Behalf Email Addr: "+email+"]<BR>[UNIN Requestor Email Addr: "+email+"]<BR>[Reported By Index:"+index+"]<BR>"
+ "[Reported By Badge:"+index+"]<BR>[Alternate Contact Name: "+firstname+" "+lastname+"]<BR>"
+ "[Alternate Email Address:"+email+"]<BR>[Point of Contact:Reported By]<BR><BR>[Impact:Low]<BR><BR>[Urgency:Medium]<BR><BR>[Severity:3-Medium]<BR>"
+ "[SR Assigned To Group: "+srgroup+"]<BR></BODY></HTML>");
msg.setContent(sb.toString(), "text/html");
System.out.println("second email");
System.out.println(sb.toString());
BodyPart messageBodyPart = new MimeBodyPart();
Multipart multipart = new MimeMultipart();
// Now set the actual message
messageBodyPart.setText(sb.toString());
// Set text message part
multipart.addBodyPart(messageBodyPart);
//code to attach the file
//String filename = filePath;
String filename = "C:/Users/S.Mandava/Documents/ContactusAction.java";
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
multipart.addBodyPart(messageBodyPart);
msg.setContent(multipart);
System.out.println("Attaching the file");