Question

I am using icefaces, ace:fileEntry component for uploading files from client and those files are being saved in file system, also I have my managedBean marked as sessionScope and it make sense that when user logs out and then log in back, he/she will not see their uploaded files.

I want to do two things:

1. When user uploads file then I want to save that file to database also along with user Id or user session information.
2. When user logs out and logs back in again then he/she should be able to see his/her uploaded files, currently files are not saved after user logs out?
3. User can only see his or her uploaded files and not any random files.

My approach:

I am thinking of creating new table in database with file id, user id and file and so when file gets uploaded from client using ace fileEntry component then via my Hibernate, I would save file and user related information that I get from session to database, now when user logs out and logins back, I make query to database table with userId to get all his or her files.

Any thoughts or better suggestions for implementing this feature?

Answer 1

Create a separate subfolder for every user based on user ID.

/var/webapp/uploads/[userid]

You can use File#mkdir() to create a subfolder if necessary.

File uploads = new File("/var/webapp/uploads");
File userUploads = new File(uploads, String.valueOf(user.getId()));
userUploads.mkdir();
// ...

Then to get all uploaded files afterwards, just do

File[] allUserUploads = userUploads.listFiles();
// ...

This way you don’t need another DB table and the users will always only see their own files.