java.sql.SQLException: parameter not set

[stephy1]

hi,
I have a browse button for sending single image with other text inputs in jsp type I have chosen Multipart-Form data .
I got 'parameter not set error' for blob field.
I am using MySql database.
I am using DefaultFileItemFactory clss

FileItemFactory factry= new DefaultFileItemFactoy();
       FileUpload upload= new FileUpload(factry);
       List FileItem= upload.parseRequest(request);
       Iterator i= FileItem.iterator();
       while(i.hasNext())
        {
          File f=(File)i.next();
          FileInputStream fi= new FileInputStream(f);
          p.setBinaryStream(15,fi,(int)f.length());
        }

Is while loop necessary? If not, How can i avoid iteration? and how to make the code insert image?