服务没有注入Grails域类，Grails 2.0.0和2.0.3

Question

I've tried multiple app restarts, and upgrading from 2.0.0 to 2.0.3, no help. I always get this message:

:   def getCustomerName(){64:       customerService.name
"Cannot get property 'name' on null object"

Relevant domain class part:

class Instance {
    def customerService
    ...

    def getCustomerName(){
        customerService.name
    }

Relevant Service class:

class CustomerService {

I'm trying to access the getCustomerName method from a view which has access to an object of Instance. Also tried this with another service, same result.

Answer 1

Just a guess here - the following reads like a getter method:

    def getCustomerName()

Is it possible that the framework is checking the getter and setter methods for validity before the dependency injection takes place?

Burt answered a question a couple of years ago regarding using dependency injection in an onLoad() and it appeared that is what was happening. He advised:

Add this import:

    import org.codehaus.groovy.grails.commons.ApplicationHolder as AH

and then reference the customer service as

    def customerService = AH.application.mainContext.customerService