This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
In My application I want to send attachements along with plain message(just like yahoo). But how do i protect folders(in appache-tomcat server) which will contain this attachements.what i mean user can type URL of this folder and see this attachements.I want only valid (logged in) user acess the attachement by clicking on a link on the web page how to do this. some proposed to keep it away from webroot. but dont no how to do this.and one more possibility use security constraint in deployment descriptor.i tried this but it is not working Please show me some way regarding this.