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Removing temporary files

K Gupta
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Joined: Aug 31, 2004
Posts: 43
I don't know if I am posting at right place, so my apologies if its not

I have a problem regarding removing my temporary files once they are sendt to or viewed by the client.Now I can't call delete afetr sending because I don't know till when the user clicks the save button.So I need some way to figure that out .Please help.

Thax in advance.


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Ernest Friedman-Hill
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Joined: Jul 08, 2003
Posts: 24187
    
  34

What sort of application is this? A Swing app? A Web app?

If it's a Swing app, mark the files as temporary files -- look at the java.io.File class for this. Marked files will be deleted automatically when the JVM exits.

If it's a Web app, you can't delete files on the user's machine.


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K Gupta
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Joined: Aug 31, 2004
Posts: 43
Its a web -app and I want to delete file from the server after user has downloaded it
Jaime M. Tovar
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Joined: Mar 28, 2005
Posts: 133
I would use a servlet in my web app to provide the file, after the file is viewed the servlet will delete it. Lets say you generate a timestamp.pdf file on the server in an specific place. You will give the user a link to the servlet and pass the servlet the timestamp (or file id) via a parameter. Then the servlet will get the file, open it with a inputstream and print it to the response.outputstream. At the end you flush the outputstream and delete the file.

This will clean up your temp files. But user can only download them once. If they try a second time they will cause an exception cause the file was deleted at the end of the first use. If this is a problem tell me, there is a second solution to the problem but maybe it will need some changes to your app.


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I agree. Here's the link: http://aspose.com/file-tools
 
subject: Removing temporary files