#this is a servlet application to upload servlet to database
--it uploads by using servlet configured by web.xml  
--First index jsp loads the file   
-- context listener uploads the file to temporary folder  
-- the user servlet reads the file path from context listener and gets connection from databaseBootstrap and then uploads the data to mysql      
  --the project uses org.apache.poi.ss.usermodel to read the excel file  in userServlet.class
  --commons-fileupload is used for file upload