Grails - getting a message value from controller

问题

How can I get a value from message properties outside of GSPs? For instance, the equivalent of

<g:message code="some.message"/>

but in a controller?

回答1:

Inside a controller or a taglib, you can use the following :

g.message(code: 'some.message')

However, inside domain classes or services, you need to inject messageSource and call getMessage() method from Sping class AbstractMessageSource. This snippet shows you how to do that:

import org.springframework.context.i18n.LocaleContextHolder as LCH
...
class MyServiceOrMyDomain {
  def messageSource 
  ...
  messageSource.getMessage(code, msgArgs, defaultMsg, LCH.getLocale())
  ...
}

回答2:

You can also import the validation tag lib and use it grab the message source.

import org.codehaus.groovy.grails.plugins.web.taglib.ValidationTagLib
def g = new ValidationTagLib()
g.message(error: error)

来源：https://stackoverflow.com/questions/2814771/grails-getting-a-message-value-from-controller