Thanks guys for the help. Thanks for bringing the idea forward Craig.
On Thu, 14 Oct 2004 11:40:49 -0700, Craig McClanahan <[EMAIL PROTECTED]> wrote: > You should note that the standard struts-example webapp does exactly > this ... the "database" is represented as an XML file that is > initialzed in the init() method of a plugin, and finalized in the > destroy() method. > > Craig > > > On Thu, 14 Oct 2004 09:43:36 -0700, Wiebe de Jong <[EMAIL PROTECTED]> wrote: > > If you don't have access to a database, then creating some kind of in-memory > > > > database and storing it in the servlet context is a good alternative. Use a > > Struts plugin for setup and cleanup of whatever you use. > > > > One thing you will have to be careful of is using up all your memory. If you > > are storing token/timestamp/status for a large number of users, it will add > > up. > > > > Wiebe > > > > > > > > -----Original Message----- > > From: Andrew Hill [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, October 13, 2004 8:23 PM > > To: Struts Users Mailing List > > Subject: Re: sending/maintaning a download link > > > > 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] > > > > > > > > --------------------------------------------------------------------- > 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]
