启用Deadbolt时出现错误

Question

我正在尝试在我的Play+Scala应用程序(2.5x)中使用DeadBolt.我在我的build.sbt (Play 2.5x)中添加了以下内容：

libraryDependencies += "be.objectify" %% "deadbolt-scala" % "2.5.1"

在我的conf/application.conf中：

enabled += "be.objectify.deadbolt.scala.DeadboltModule"

在"sbt run“之后，当我访问服务器时，我立即得到这个错误：

play.api.UnexpectedException: Unexpected exception[CreationException: Unable to create injector, see the following errors:

1) No implementation for be.objectify.deadbolt.scala.cache.HandlerCache was bound.
  while locating be.objectify.deadbolt.scala.cache.HandlerCache
    for parameter 1 at be.objectify.deadbolt.scala.ActionBuilders.<init>(ActionBuilders.scala:30)
  at be.objectify.deadbolt.scala.DeadboltModule.bindings(DeadboltModule.scala:32):
Binding(class be.objectify.deadbolt.scala.ActionBuilders to self) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)

2) No implementation for be.objectify.deadbolt.scala.cache.HandlerCache was bound.
  while locating be.objectify.deadbolt.scala.cache.HandlerCache
    for parameter 1 at be.objectify.deadbolt.scala.DeadboltActions.<init>(DeadboltActions.scala:34)
  at be.objectify.deadbolt.scala.DeadboltModule.bindings(DeadboltModule.scala:30):
Binding(class be.objectify.deadbolt.scala.DeadboltActions to self) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)

2 errors]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:180)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131)
    at scala.Option.map(Option.scala:146)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129)
    at scala.util.Success.flatMap(Try.scala:231)

我没有做任何其他的代码更改。为什么即使我还没有写任何代码来使用Deadbolt，它也会失败？

Answer 1

它不能工作，因为它需要实现某些接口，并绑定到DI中。因此，您不能简单地插入依赖项，然后期望它能正常工作。

您至少需要DI绑定：

TemplateFailureListener HandlerCache DeadboltExecutionContextProvider

在https://github.com/schaloner/deadbolt-2-scala-examples上提供了一个可用的示例