Running bootstrap with Grails Console

you want to test or check your domain model after setting your environment or creating some data on the bootStrap:

How to run the bootstrap from Grails console and set the ApplicationContext and the grailsApplication

from the Grails documentation:

Starts the Grails console, which is an extended version of the regular Groovy console. There are a couple of useful variables registered in the binding:
ctx – The Spring ApplicationContext instance
grailsApplication – The GrailsApplication instance

if you are using the ‘GrailsApplication’ in your bootstrap implement a setter for the grailsApplication

def setGrailsApplication = { grailsApp->
        grailsApplication = grailsApp

on the console write:

def b = new BootStrap()

and now you can write and run your code...