its works after including akka-stream dependency (transitive) with never
version.
"com.typesafe.akka" %% "akka-http" % "10.0.10",
"com.typesafe.akka" %% "akka-actor" % "2.5.4",
"com.typesafe.akka" %% "akka-stream" % "2.5.4",
"com.typesafe.akka" %% "akka-http-spray-json" % "10.0.10"
On Wednesday, March 8, 2017 at 3:19:43 AM UTC+5:30, Rob Crawford wrote:
>
> From my understanding of the binary compatibility statement, these should
> work together, but after I start an Akka-http server, I get this exception:
>
> java.lang.NoSuchMethodError:
> akka.actor.ActorCell.addFunctionRef(Lscala/Function2;)Lakka/actor/FunctionRef;
> at
> akka.stream.stage.GraphStageLogic$StageActor.<init>(GraphStage.scala:142)
> at akka.stream.stage.GraphStageLogic.getStageActor(GraphStage.scala:929)
> ...
>
> Now, I'm starting this from inside an actor, but didn't think that would
> be an issue. I've tried starting the Http server from main(), but it throws
> the same exception. To start it, I'm doing this:
>
> ActorSystem system = getContext().system();
>
>
> final HttpBinding myServer = new HttpBinding();
> myServer.startServer("localhost", 8080, ServerSettings.create(system),
> system);
>
>
> The HttpBinding class is:
>
>
> public class HttpBinding extends HttpApp {
>
> protected Route route() {
> return path("hello", () ->
> get(() ->
> complete("<h1>Say hello to akka-http</h1>")
> )
> );
> }
> }
>
>
> I've checked the dependencies, and nothing's brought in an older version of
> akka. I'm using the Scala 2.12 versions of everything. From my build.gradle:
>
>
> compile group: 'com.typesafe.akka', name: 'akka-actor_2.12', version: '2.5-M2'
> compile group: 'com.typesafe.akka', name: 'akka-persistence_2.12', version:
> '2.5-M2'
> compile group: 'com.typesafe.akka', name: 'akka-slf4j_2.12', version: '2.5-M2'
>
> compile group: 'com.typesafe.akka', name: 'akka-http_2.12', version: '10.0.4'
>
>
> The only place I've seen a similar exception discussed was a StackOverflow
> question that involved Play, and I'm not using Play. Any suggestions on
>
> where to look for the problem? Or should I just wait for the final release of
> Akka 2.5 and Akka-Http to catch up?
>
>
> Thanks!
>
>
>
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