Guice configuration errors: Could not find suitable constructor in controllers

[mehayden]

I am trying to define a custom REST controller as per custom-rest-controllers.md. It compiles and runs the list method correctly, but then it gets an exception, seemingly to do with dynamic controller routes, although the routes are not defined with '@'. Here is the error and stack trace:

com.google.inject.ConfigurationException: Guice configuration errors:

1. Could not find a suitable constructor in controllers.LinkRestController. Clas
   ses must have either one (and only one) constructor annotated with @Inject or a
   zero-argument constructor that is not private.
   at controllers.LinkRestController.class(LinkRestController.java:21)
   while locating controllers.LinkRestController

1 error
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java
:1004)
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java
:961)
at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java
:1013)
at play.utils.inject.InjectAdapter.getInstance(InjectAdapter.java:34)
at play.utils.crud.CRUDManager.getController(CRUDManager.java:59)
at play.utils.crud.GlobalCRUDSettings.getControllerInstance(GlobalCRUDSe
ttings.java:12)
at play.utils.meta.cp.ClasspathScanningControllerRegistry.scanRest(Class
pathScanningControllerRegistry.java:116)
at play.utils.meta.cp.ClasspathScanningControllerRegistry.(Classpa
thScanningControllerRegistry.java:45)
at play.utils.crud.CRUDManager.initialize(CRUDManager.java:45)
at play.utils.crud.GlobalCRUDSettings.onStart(GlobalCRUDSettings.java:23
)
at play.core.j.JavaGlobalSettingsAdapter.onStart(JavaGlobalSettingsAdapt
er.scala:18)
at play.api.GlobalPlugin.onStart(GlobalSettings.scala:203)
at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.sca
la:88)
at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.sca
la:88)
at scala.collection.immutable.List.foreach(List.scala:318)
at play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:88)
at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
at play.utils.Threads$.withContextClassLoader(Threads.scala:18)
at play.api.Play$.start(Play.scala:87)
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1$$anon
fun$1.apply(ApplicationProvider.scala:139)
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1$$anon
fun$1.apply(ApplicationProvider.scala:112)
at scala.Option.map(Option.scala:145)
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1.apply
(ApplicationProvider.scala:112)
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1.apply
(ApplicationProvider.scala:110)
at scala.util.Success.flatMap(Try.scala:200)
at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvi
der.scala:110)
at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvi
der.scala:102)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(
Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.sca
la:24)
at scala.concurrent.forkjoin.ForkJoinTask$AdaptedRunnableAction.exec(For
kJoinTask.java:1361)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool
.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:19
79)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThre
ad.java:107)
[info] play - Application started (Dev)

[hakandilek]

Does LinkRestController have a zero-argument public constructor? Or one with @Inject annotation?

[hakandilek]

This seems to be similar to #42 which is fixed. Please try again with the latest snapshot version and tell me if you still experience the same problem. Otherwise we may close this bug.

[bluepoet]

+1

[mehayden]

Sorry, I'm no longer working on this app and have no way to verify, so close if you like.

[proton5000]

I have the same problem. I can not solve it. Please help me. I am trying to update play framework 2.3.10 to 2.4.1 and got this error.