Grails：在域中动态注入服务 [英] Grails: Dynamically inject service in domain class

问题描述

  ApplicationHolder.application .getServiceClass（package。$ {property} Service）。clazz 
  

注入它的相关服务。我做错了吗？ 新的实例将绕过Spring的依赖管理;您需要从应用程序上下文获取配置的单例bean。改为使用它：

  def service = ApplicationHolder.application.getMainContext（）。getBean（$ {property} Service）
  

假设'property'是服务的部分bean名称，即对于FooBarService，属性会必须是'fooBar'。如果它是'FooBar'，那么你可以使用GrailsNameUtils.getPropertyName（）来修复它：

  import grails.util.GrailsNameUtils 
 
 String beanName = GrailsNameUtils.getPropertyName（property）+'Service'
 def service = ApplicationHolder.application.getMainContext（）。getBean（beanName）
  

I need to inject a service based on domain property, so far I came up with the following:

ApplicationHolder.application.getServiceClass("package.${property}Service").clazz

but loading it this way doesn't inject it's dependent services. Am I doing it wrong?

解决方案

New instances will bypass Spring's dependency management; you need to get the configured singleton bean from the application context. Use this instead:

def service = ApplicationHolder.application.getMainContext().getBean("${property}Service")

That assumes that 'property' is the partial bean name for a service, i.e. for FooBarService, the property would have to be 'fooBar'. If it's 'FooBar' then you can use GrailsNameUtils.getPropertyName() to fix it:

import grails.util.GrailsNameUtils

String beanName = GrailsNameUtils.getPropertyName(property) + 'Service'
def service = ApplicationHolder.application.getMainContext().getBean(beanName)

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