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Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
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The best practise is to use a services layer for dao operation ( for transactions and business logic ) . But i don't know your application I might be mistaken.
However i think you can inject your dao in the controller class and then set the result of dao's call in your command class. You can do this also before the page is called overriding the formBackingObject or referenceData methods of the controller.
* Excuse my bad English... i hope you'll understand