Error in Declaration of service within Grails service

问题

I have concerns about the use of Services within other Services. Some work, but others don't. The problem is that I can't figure out what's wrong.

When you add a service that generates the error always occurs the same problem, then I withdraw the reference to service problematic and the system returns to normal.

I wonder if the same is effecting any circular reference creating instability.

class UserService {
    def terceirizadoService
    def unidadeService
    def grailsApplication
    def springSecurityService
    def tabService   //If I remove this line the system works
    ...
}


class TabService {
    def contratoService, grailsApplication ...
}

The error happens when the Bootstrap reference is made to a domain that has a reference to the tabService service.

class Car implements Serializable {
    transient tabService
    ...
}

and generates this log:

Caused by BeanCreationException: Error creating bean with name ‘tabService’: Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contratoService': Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#3': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService’: Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name ‘tabService’: org.springframework.beans.factory.FactoryBeanNotInitializedException: FactoryBean is not fully initialized yet
->>  105 | methodMissing                    in org.grails.datastore.gorm.GormStaticApi
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    558 | doCall                           in BootStrap$_closure1
|    308 | evaluateEnvironmentSpecificBlock in grails.util.Environment
|    301 | executeForEnvironment            in     ''
|    277 | executeForCurrentEnvironment . . in     ''
|    262 | run                              in java.util.concurrent.FutureTask
|   1145 | runWorker . . . . . . . . . . .  in java.util.concurrent.ThreadPoolExecutor
|    615 | run                              in java.util.concurrent.ThreadPoolExecutor$Worker
^    744 | run . . . . . . . . . . . . . .  in java.lang.Thread

Caused by BeanCreationException: Error creating bean with name '(inner bean)#2': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contratoService': Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#3': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService’: Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name ‘tabService’: org.springframework.beans.factory.FactoryBeanNotInitializedException: FactoryBean is not fully initialized yet
->>  105 | methodMissing                    in org.grails.datastore.gorm.GormStaticApi

I'm using Grails 2.3.7

回答1:

We've seen issues like this whenever we use prototype scoped services as well (not sure if that applies to you).

As a work around you could solve it by not injecting the tabService but getting it on demand:

def getTabService() {
    grailsApplication.mainContext.getBean(TabService)
}

Not ideal, obviously.

来源：https://stackoverflow.com/questions/23685583/error-in-declaration-of-service-within-grails-service