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From Richard <>
Subject Re: sending/maintaning a download link
Date Mon, 22 Nov 2004 10:38:36 GMT
Hello Guys,

I am about to start on this module below. I have asked this I think a
month ago and only after finishing the rest of my small website will I
implement this. Anyway im on track on learning the token creation for
struts and the quartzs plugin. I was wondering if I will be sending
the file streaming or I can just have a forward in my action mapping
that would serialized the file?

Thanks in advance

On Wed, 13 Oct 2004 10:12:38 -0700, Wiebe de Jong <> 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:
> 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 []
> 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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