Determine whether the requested action is authorized for the current user.
Create (if necessary) and cache an Action for this request.
Action
Validate the properties of the form bean for this request.
Intercept any exception thrown by a subsequent Command in this processing chain, and fire the configured exception handler chain after storing the exception that has occurred into the Context.
Command
Context
Invoke the appropriate Command for this request.
Look up and execute a commons-chain Command based on properties of the ActionContext's forwardConfig property.
forwardConfig