剪影意外异常playframework 2.6

Question

我在播放框架中使用 Silhouette 库时遇到问题，我正在使用 guice 进行运行时依赖注入，创建接受 DelegableAuthInfoDAO 作为参数的 DelegableAuthInfoRepository 时出错，它说 DelegableAuthInfoDAO 未绑定到具体实例，即使我在configure方法中做了一个绑定，这是我启用模块时遇到的错误

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

1) No implementation for 
com.mohiva.play.silhouette.persistence. 
daos.DelegableAuthInfoDAO<com.mohiva.pla
y.silhouette.api.util.PasswordInfo> was bound.
while locating 


com.mohiva.play.silhouette.persistence.daos 
.DelegableAuthInfoDAO<com.mohiva.play
.silhouette.api.util.PasswordInfo>
for the 1st parameter of 
modules.authModule.provideAuthInfoRepository(authModule.scala:112)
at modules.authModule.provideAuthInfoRepository(authModule.scala:112) (via 
modules: com.google.inject.util.Modules$OverrideModule -> 
modules.authModule)

这是模块中完成的一些配置：

@Provides
def provideAuthInfoRepository(passwordInfoDAO: DelegableAuthInfoDAO[PasswordInfo]): AuthInfoRepository = {
  new DelegableAuthInfoRepository(passwordInfoDAO)
}

override def configure() = {
  bind(classOf[UserDAO]).asEagerSingleton()
  bind(classOf[IdentityService[User]]).to(classOf[UserService])
  bind(classOf[CacheLayer]).to(classOf[PlayCacheLayer])

  bind(classOf[PasswordHasher]).toInstance(new BCryptPasswordHasher())
  bind(classOf[EventBus]).toInstance(new EventBus)
  bind(classOf[DelegableAuthInfoDAO[PasswordInfo]]).toInstance(new InMemoryAuthInfoDAO[PasswordInfo]())
  bind(classOf[IDGenerator]).toInstance(new SecureRandomIDGenerator())
  bind(classOf[FingerprintGenerator]).toInstance(new DefaultFingerprintGenerator(false))
  bind(classOf[Clock]).toInstance(Clock())
}

Answer 1

这行得通：

bind(new TypeLiteral[DelegableAuthInfoDAO[PasswordInfo]]{}).toInstance(new InMemoryAuthInfoDAO[PasswordInfo])