i developed an application using Grails 2.2.0, i want to make a licencing feature in the application for instance use if for 30 days as trial, after that it stops and need a key , how i can make the licencing part, is there any tool or plugins may help in this?
I don't know of any plugins, but I've done this myself. Basically, you need a domain that keeps track of what license belongs to a user. You might call this UserLicense. Then just create a filter that, on each request, validates the license. Or, you could do that on login and assume that for each session, the license is valid.