Accessing Grails services from src/groovy

Question

Grails services are abstractions used for implementing business logic (as well as connecting to backing services/DBs, etc.) outside of a controller. So in a typical controller y

Answer 1

One way of achieving this is by using ServletContext-

ApplicationContext ctx = (ApplicationContext)ServletContextHolder.

getServletContext().getAttribute(GrailsApplicationAttributes.APPLICATION_CONTEXT)

statisticsService = (StatisticsService ) ctx.getBean("statisticsService ")

see this blog - http://www.grailsbrains.com/availing-grails-goodies-in-srcjava-or-srcgroovy/

Answer 2

You can inject grails service in spring bean by defining injection login in resources.groovy under conf > spring

As I made an ExampleService and Example class in src/groovy

ExampleService

class ExampleService {

 def serviceMethod() {
    println "do something"
 }

}

Example Class under src/groovy

class Example {

ExampleService exampleService

 def doSomething() {
    def result = exampleService.serviceMethod()
 }
}

resources.groovy under conf>spring

beans = {

 ex(Example){ bean ->
    exampleService = ref('exampleService')
 }
}

so I can define Example ex as spring bean in grails-app and it will have ExampleService injected by itself.

Hope this helps. Thanks

Answer 3

You can also get a service using grails.util.Holders

Example:

For injecting MyService service class, use Holders.applicationContext.getBean("myService")

Where "myService" is the name of your service class in lower camel case.