Java ProvisionException:无法在play framework中进行设置

我得到了这些错误 ProvisionException:无法设置，请查看以下错误：

com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) Could not find a suitable constructor in models.factory.FactoryHandler. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private.
  at models.factory.FactoryHandler.class(FactoryHandler.scala:7)
  while locating models.factory.FactoryHandler
    for parameter 0 at controllers.DirectUserController.<init>(DirectUserController.scala:90)
  while locating controllers.DirectUserController
    for parameter 7 at router.Routes.<init>(Routes.scala:124)
  while locating router.Routes
  while locating play.api.inject.RoutesProvider
  while locating play.api.routing.Router

1 error
     com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1025)
     com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1051)
     play.api.inject.guice.GuiceInjector.instanceOf(GuiceInjectorBuilder.scala:321)
     play.api.inject.guice.GuiceInjector.instanceOf(GuiceInjectorBuilder.scala:316)
     play.api.Application$class.routes(Application.scala:111)
     play.api.DefaultApplication.routes(Application.scala:240)
     play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:90)
     play.api.Play$$anonfun$start$1.apply(Play.scala:87)
     play.api.Play$$anonfun$start$1.apply(Play.scala:87)
     play.utils.Threads$.withContextClassLoader(Threads.scala:21)
     play.api.Play$.start(Play.scala:87)

这是DirectUserController的第90行

    class DirectUserController @Inject() (var factory:FactoryHandler) extends Controller {
//other Action code 
}

我还在路由文件中添加了代码

routesGenerator := InjectedRoutesGenerator

---

我正在使用play framework 2.4请帮助我为什么会出现此错误

您需要在FactoryHandler代码中指定@Inject（）。。阅读错误，我认为它说明了错误所在。

您需要在FactoryHandler代码中指定@Inject（）。。阅读错误，我认为它说明了问题所在。

class FactoryHandler@inject（）（var s:String=“real”）当我这样做时，我得到编译时错误注入未找到：键入injectCapital“I”并导入它，我猜class FactoryHandler@inject（）（var s:String=“real”）当我这样做时，我得到编译时错误注入未找到：键入injectCapital“I”我想是导入的

routesGenerator := InjectedRoutesGenerator