thanks.
On Thu, 14 Oct 2004 11:22:58 +0800, Andrew Hill <[EMAIL PROTECTED]> wrote: > It wouldnt survive a server restart, but this may well be acceptable if > you dont expect the server to restart very often and your token expiry > is only a day or two and its easy to get another token if needs be. > > 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 > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
