GetDisposition

Question

I have been using a simple Java Mail program to read an incoming mail and if the mail has an attachment save the attachment as a file. Here is a part of the code:
String fileName = p.getFileName();
String disposition = p.getDisposition();
String contentType = p.getContentType();
System.out.println("File Name is:" + fileName );
System.out.println("Dispostion is:" + disposition );
System.out.println("Content type is:" + contentType );
//Check if fileName exists and disposition=ATTACHMENT
if (fileName != null && Part.ATTACHMENT.equalsIgnoreCase(disposition))
//Create a New File Object
System.out.println("Building Output File");
File f = new File(fileName); //
// find a version that does not yet exist
for (int i = 1; f.exists(); i++)
String newName = fileName + " " + i;
f = new File(newName);
The above code has been working fine for the last couple of years. However lately the getDisposition is returning null in some scenarios even though there is an attacment. See below for part of the output.
I noticed that when the charset is "utf-8" disposition=null and when charset ="us-ascii" dispostion is:attachment.
Multipart Message
File Name is:null
Dispostion is:null
Content type is:text/plain;^M
charset="us-ascii"
File Name is:vsr_0000378445_20080516_0842.htm
Dispostion is:attachment
Content type is:application/octet-stream;^M
name="vsr_0000378445_20080516_0842.htm"
Building Output File
File Created
Multipart Message
File Name is:null
Dispostion is:null
Content type is:text/plain;^M
charset="utf-8"
File Name is:vsr_0000378471_20080516_1244.htm
Dispostion is:null
Content type is:application/octet-stream;^M
name="vsr_0000378471_20080516_1244.htm"
Hopefully someone has encountered this problem before.
Thanks in advance for your help.
Regards,
SK

Answer 1

Thanks for your response again.
I do understand the logic of my program, but I guess I am puzzled at the inconsistency of how it behaves. My program is pretty static and has been working for years. I wanted to make sure that all my loose ends are tied before I go to the mailer.
Also the mail.jar and activation.jar files I have been using are very old(2004). Do you think getting the latest version will help?
Again I understand the fact that the program will only process what it gets, but i expect Javamail API to be smarter, especially when sendmail is doing the same without a problem.
SK