Scala Play framework 2.4、Guice和securesocial

我正在尝试遵循我在网站上找到的教程 . 但本教程是针对第2.3集的。我遇到问题，因为在play 2.4版中，他们从play.api.GlobalSettings中删除了getControllerInstance。如何使用Guice依赖项注入来实现所需的相同功能

    import java.lang.reflect.Constructor
    import securesocial.core.RuntimeEnvironment
    import securesocial.core.providers._
    import securesocial.core.providers.utils.{Mailer, PasswordHasher, PasswordValidator}
    import services.{DemoUserService}
    import models.DemoUser
    import scala.collection.immutable.ListMap

    object Global extends play.api.GlobalSettings {

      /**
       * Demo application's custom Runtime Environment
       */
      object DemoRuntimeEnvironment extends RuntimeEnvironment.Default[DemoUser] {
        override lazy val userService: DemoUserService = new DemoUserService
        override lazy val providers = ListMap(
          include(new FacebookProvider(routes, cacheService, oauth2ClientFor(FacebookProvider.Facebook))),
          include(new GitHubProvider(routes, cacheService, oauth2ClientFor(GitHubProvider.GitHub))),
          include(new GoogleProvider(routes, cacheService, oauth2ClientFor(GoogleProvider.Google))),
          include(new LinkedInProvider(routes, cacheService, oauth1ClientFor(LinkedInProvider.LinkedIn))),
          include(new TwitterProvider(routes, cacheService, oauth1ClientFor(TwitterProvider.Twitter))),
          include(new UsernamePasswordProvider[DemoUser](userService, avatarService, viewTemplates, passwordHashers))
        )
      }

       /**
       * Dependency injection on Controllers using Cake Pattern
       *
       * @param controllerClass
       * @tparam A
       * @return
       */
      override def getControllerInstance[A](controllerClass: Class[A]): A = {
        val instance = controllerClass.getConstructors.find { c =>
          val params = c.getParameterTypes
          params.length == 1 && params(0) == classOf[RuntimeEnvironment[DemoUser]]
        }.map {
          _.asInstanceOf[Constructor[A]].newInstance(DemoRuntimeEnvironment)
        }
        instance.getOrElse(super.getControllerInstance(controllerClass))
      }

    }

删除上面的蛋糕图案片段时出现错误消息：

ProvisionException: Unable to provision, see the following errors: 
 1) Could not find a suitable constructor in controllers.Application. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. at controllers.Application.class(Application.scala:27) while locating com.google.inject.Provider<controllers.Application> for parameter 1 at router.Routes.<init>(Routes.scala:47) while locating router.Routes while locating play.api.inject.RoutesProvider while locating play.api.routing.Router

 2) Could not find a suitable constructor in securesocial.controllers.LoginPage. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. at securesocial.controllers.LoginPage.class(LoginPage.scala:32) while locating com.google.inject.Provider<securesocial.controllers.LoginPage> for parameter 3 at router.Routes.<init>(Routes.scala:47) while locating router.Routes while locating play.api.inject.RoutesProvider while locating play.api.routing.Router

 3) Could not find a suitable constructor in securesocial.controllers.PasswordChange. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. at securesocial.controllers.PasswordChange.class(PasswordChange.scala:34) while locating com.google.inject.Provider<securesocial.controllers.PasswordChange> for parameter 5 at router.Routes.<init>(Routes.scala:47) while locating router.Routes while locating play.api.inject.RoutesProvider while locating play.api.routing.Router

 4) Could not find a suitable constructor in securesocial.controllers.ProviderController. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. at securesocial.controllers.ProviderController.class(ProviderController.scala:33) while locating com.google.inject.Provider<securesocial.controllers.ProviderController> for parameter 6 at router.Routes.<init>(Routes.scala:47) while locating router.Routes while locating play.api.inject.RoutesProvider while locating play.api.routing.Router

 5) Could not find a suitable constructor in securesocial.controllers.Registration. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. at securesocial.controllers.Registration.class(Registration.scala:37) while locating com.google.inject.Provider<securesocial.controllers.Registration> for parameter 4 at router.Routes.<init>(Routes.scala:47) while locating router.Routes while locating play.api.inject.RoutesProvider while locating play.api.routing.Router

 5 errors

ProvisionException:无法设置，请查看以下错误：
1） 在controllers.Application中找不到合适的构造函数。类必须有一个（并且只有一个）用@Inject注释的构造函数，或者一个非私有的零参数构造函数。在controllers.Application.class（Application.scala:27）中查找router.Routes处参数1的com.google.inject.Provider时。（Routes.scala:47）在查找router.Routes时查找play.api.inject.routed时提供程序在查找play.api.routing.router时提供
2） 在securesocial.controllers.LoginPage中找不到合适的构造函数。类必须有一个（并且只有一个）用@Inject注释的构造函数，或者一个非私有的零参数构造函数。在securesocial.controllers.LoginPage.class（LoginPage.scala:32）上查找参数3的com.google.inject.Provider（Routes.scala:47），在查找router.Routes时查找play.api.inject.routed时查找play.api.routed.routed时查找Provider
3） 在securesocial.controllers.PasswordChange中找不到合适的构造函数。类必须有一个（并且只有一个）用@Inject注释的构造函数，或者一个非私有的零参数构造函数。在securesocial.controllers.PasswordChange.class（PasswordChange.scala:34）中查找com.google.inject.Provider，参数5位于router.Routes。（Routes.scala:47）时查找router.Routes，同时查找play.api.inject.RoutesProvider，同时查找play.api.routing.router
4） 在securesocial.controllers.ProviderController中找不到合适的构造函数。类必须有一个（并且只有一个）用@Inject注释的构造函数，或者一个非私有的零参数构造函数。在securesocial.controllers.ProviderController.class（ProviderController.scala:33）中查找参数6的com.google.inject.Provider时，在router.Routes.（Routes.scala:47）中查找router.Routes时，在play.api.inject.RoutesProvider中查找play.api.routing.router
5） 在securesocial.controllers.Registration中找不到合适的构造函数。类必须有一个（并且只有一个）用@Inject注释的构造函数，或者一个非私有的零参数构造函数。在securesocial.controllers.Registration.class（Registration.scala:37）中查找router.Routes处参数4的com.google.inject.Provider。（Routes.scala:47）在查找router.Routes时查找play.api.inject.RoutesProvider时查找play.api.routing.router
5个错误

目前SecureSocial不支持依赖注入（JSR330），在2.4版上，游戏团队对消除全局状态做了重大更改，使用DI完成该任务

关注这个问题

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更新：正如Jorge自3.0-M4版本以来所指出的，支持播放2.4。

从3.0-M4开始，您可以使用播放2.4