Im not sure what the deal is with stuff added to servlet context after startup in a clustered environment however. If your in a cluster you would need to check up on that in the docs as it may not be available to all servers in the cluster?
Richard wrote:
Hi Wiebe,
What if im not going to use any database? can I just store this in the servlet context?
Thanks Richard
On Wed, 13 Oct 2004 10:12:38 -0700, Wiebe de Jong <[EMAIL PROTECTED]> wrote:
The only way to make a link go away is to make it dynamic. That means that the link you email will have to be to an action that returns the file. There have been quite a few threads recently on this mailing list about how to get actions to return files, including .pdf and .csv, so I won't cover that here.
Here is a list of steps for how I would go about implementing this feature:
1 - generate a unique token and store it in the database with a timestamp=now() and status=valid. 2 - add this token to the url you send in the email: http://www.mycompany.com/myapp/download.do?token=123abc 3 - when the user calls the action via the supplied url, the action checks the database to see if the token is still valid. 4 - if token is valid, send the file, and then invalidate the token so it can't be used again. (status=used) 5 - if token not valid, display a message to the user telling them that the link has either expired or already been used. 6 - have a background process run periodically (1 per day, every hour, whatever) that checks the timestamps in the database and expires tokens if the timestamp is more than 24 hours old. (status=expired)
The background process can be run via Quartz, which was also covered recently in this list.
Wiebe de Jong
-----Original Message----- From: Richard [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 13, 2004 2:14 AM To: Struts Users Mailing List Subject: sending/maintaning a download link
hi guys,
how do i do this in struts?
i want to send a download link ( via email - resolved ) to a newly registered user and that download link will expire after 24hrs.
is there and apache project for this?
please help
thanks in advance richard
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