title: Any Java plugin/code to manage uploaded files?
body: <p>According to current requirement,user will upload files with large size,which he may like to download later. I cannot store the uploaded files in DB because the size of files is large and performance will be impacted if I store uploaded files in DB. 
  Any one knows any java plugin which provide efficient file management on webserver and maintains the link to file so that the file can be downloaded when the link is requested. Also the code will make sure that user will be able to download only those files which is uploaded by them,they cannot download any file just by modifying the download link etc. I am using spring3 as the framework.</p>
  
  <p>Please suggest how to solve this problem?</p>