play-scala - java.lang.IllegalAccessError when fetching static assets

[Jeff Dyke]

play version: 2.5

java version 8.94 and 8.75 (tried the latter b/c it worked on ubuntu 14.04 machines)

scala version 2.11.8

Hoping someone has seen this as i feel like the fix will be stupidly simple and i'm spending too much time on it.  Other scala frameworks are working nicely (scalatra/scalikejdbc), actually its just play. 

[2016-06-29 23:19:13] [application-akka.actor.default-dispatcher-6] ERROR [ErrorHandler.scala:51] bondlink - ServerError - /favicon-194x194.png and message: java.lang.IllegalAccessError: class play.utils.Resources$ (in unnamed module @0x65bad087) cannot access class sun.net.www.protocol.file.FileURLConnection (in module java.base) because module java.base does not export sun.net.www.protocol.file to unnamed module @0x65bad087

[2016-06-29 23:19:13] [application-akka.actor.default-dispatcher-6] ERROR [ErrorHandler.scala:54] bondlink - java.lang.RuntimeException: java.lang.IllegalAccessError: class play.utils.Resources$ (in unnamed module @0x65bad087) cannot access class sun.net.www.protocol.file.FileURLConnection (in module java.base) because module java.base does not export sun.net.www.protocol.file to unnamed module @0x65bad087

at play.api.mvc.ActionBuilder$$anon$2.apply(Action.scala:463)

at play.api.mvc.Action$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:112)

at play.api.mvc.Action$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:112)

at play.utils.Threads$.withContextClassLoader(Threads.scala:21)

at play.api.mvc.Action$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:111)

at play.api.mvc.Action$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:110)

at scala.Option.map(Option.scala:146)

at play.api.mvc.Action$$anonfun$apply$2.apply(Action.scala:110)

at play.api.mvc.Action$$anonfun$apply$2.apply(Action.scala:103)

at scala.concurrent.Future$$anonfun$flatMap$1.apply(Future.scala:253)

at scala.concurrent.Future$$anonfun$flatMap$1.apply(Future.scala:251)

at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)

at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:55)

at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:91)

at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)

at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)

at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)

at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:90)

at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)

at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:405)

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:1979)

at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: java.lang.IllegalAccessError: class play.utils.Resources$ (in unnamed module @0x65bad087) cannot access class sun.net.www.protocol.file.FileURLConnection (in module java.base) because module java.base does not export sun.net.www.protocol.file to unnamed module @0x65bad087

at play.utils.Resources$.isUrlConnectionADirectory(Resources.scala:32)

at controllers.AssetsBuilder$$anonfun$19.apply(Assets.scala:440)

at controllers.AssetsBuilder$$anonfun$19.apply(Assets.scala:436)

at scala.concurrent.Future$$anonfun$flatMap$1.apply(Future.scala:253)

at scala.concurrent.Future$$anonfun$flatMap$1.apply(Future.scala:251)

at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)

at play.api.libs.iteratee.Execution$trampoline$.execute(Execution.scala:70)

at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:40)

at scala.concurrent.impl.Promise$DefaultPromise.scala$concurrent$impl$Promise$DefaultPromise$$dispatchOrAddCallback(Promise.scala:280)

at scala.concurrent.impl.Promise$DefaultPromise.onComplete(Promise.scala:270)

at scala.concurrent.Future$class.flatMap(Future.scala:251)

at scala.concurrent.impl.Promise$DefaultPromise.flatMap(Promise.scala:153)

at controllers.AssetsBuilder.controllers$AssetsBuilder$$assetAt(Assets.scala:436)

at controllers.AssetsBuilder$$anonfun$at$1.apply(Assets.scala:424)

at controllers.AssetsBuilder$$anonfun$at$1.apply(Assets.scala:423)

at play.api.mvc.Action$.invokeBlock(Action.scala:498)

at play.api.mvc.Action$.invokeBlock(Action.scala:495)

at play.api.mvc.ActionBuilder$$anon$2.apply(Action.scala:458)

... 23 more

[Will Sargent]

I think you're using JDK 1.9, which is not out yet.

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[Jeff Dyke]

Interesting.  while i don't doubt  you....i appreciate the response:

 jeff@stagingweb01: which java

/usr/lib/java/bin/java

 jeff@stagingweb01: java -version

java version "1.8.0_92"

Java(TM) SE Runtime Environment (build 1.8.0_92-b14)

Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode) 

Thanks for responding.

Jeff

[Will Sargent]

The reason why I think that is the error message seems specifically related to project jigsaw aka the jdk 1.9 modules system:

https://www.google.com/search?q=%22cannot+access+class+because+module+java.base+does+not+export+*+unnamed+module

Will.

To view this discussion on the web visit https://groups.google.com/d/msgid/play-framework/d90a25c9-ec10-4bbc-8d03-2d11c3fae5ae%40googlegroups.com.

[Will Sargent]

Fixed google link:

https://www.google.com/#safe=active&q=cannot+access+class+because+module+java.base+does+not+export+unnamed+module

[Jeff Dyke]

hmmm, thanks for the response again.  Some symlinks on linux point to java8, but /etc/alternatives/java points to java9.

Thanks...multiple items to track down.