Question

我正在尝试在Play + Scala应用程序中使用Deadbolt（2.5x）。我在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"

当我访问服务器“sbt run”之后，我立即收到此错误：

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)

我没有进行其他代码更改。即使我还没有写任何代码行来使用Deadbolt，为什么它会失败？

Answer 1

它不起作用，因为它需要某些接口，并在DI中绑定。所以你不能只是放弃依赖关系，并期望它能够发挥作用。

你至少需要DI绑定：

TemplateFailureListener HandlerCache DeadboltExecutionContextProvider

https://github.com/schaloner/deadbolt-2-scala-examples

提供了一个工作示例

启用Deadbolt时出错

1 个答案: