Swagger support doesn't work on Scala 2.10?

[12foo]

Hi,

is it possible that Swagger is broken on Scala 2.10? I've tried a few things, but I can't get it to start, so maybe it's not just me. I'm not too familiar with either Scalatra or the new features in 2.10, but it seems Swagger's reflection is somehow doing bad things (throws a NoSuchFieldException on starting the container).

I've created a test project on GitHub - it's just the vanilla g8 template with the Swagger support and one Swagger annotation added, and throws the error below.

Using:
Scalatra 2.2
Scala 2.10
SBT 0.12.2
JDK 7

18:46:59.465 [pool-6-thread-4] ERROR o.scalatra.servlet.ScalatraListener - Failed to initialize scalatra application at 
java.lang.NoSuchFieldException: MODULE$
    at java.lang.Class.getField(Class.java:1539) ~[na:1.7.0_15]
    at org.scalatra.swagger.reflect.Reflector$$anonfun$5.apply(Reflector.scala:158) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.reflect.Reflector$$anonfun$5.apply(Reflector.scala:157) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at scala.Option.map(Option.scala:145) ~[scala-library.jar:0.12.2]
    at org.scalatra.swagger.reflect.Reflector$.createClassDescriptor(Reflector.scala:156) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.reflect.Reflector$$anonfun$describe$2.apply(Reflector.scala:61) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.reflect.Reflector$$anonfun$describe$2.apply(Reflector.scala:61) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.reflect.package$Memo$$anonfun$apply$1.apply(package.scala:12) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at scala.collection.mutable.MapLike$class.getOrElseUpdate(MapLike.scala:189) ~[scala-library.jar:0.12.2]
    at scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:91) ~[scala-library.jar:0.12.2]
    at org.scalatra.swagger.reflect.package$Memo.apply(package.scala:12) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.reflect.Reflector$.describe(Reflector.scala:61) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.Swagger$.collectModels(Swagger.scala:49) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.Swagger$.collectModels(Swagger.scala:38) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at org.scalatra.swagger.SwaggerSupportSyntax$class.registerModel(SwaggerSupport.scala:346) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at com.test.test.MyScalatraServlet.registerModel(MyScalatraServlet.scala:7) ~[classes/:na]
    at org.scalatra.swagger.SwaggerSupport$class.apiOperation(SwaggerSupport.scala:459) ~[scalatra-swagger_2.10-2.2.0.jar:2.2.0]
    at com.test.test.MyScalatraServlet.apiOperation(MyScalatraServlet.scala:7) ~[classes/:na]
    at com.test.test.MyScalatraServlet.<init>(MyScalatraServlet.scala:12) ~[classes/:na]
    at ScalatraBootstrap.init(ScalatraBootstrap.scala:13) ~[classes/:na]
[... jetty stuff ...]

[casualjim]

you have to give your api operation a return type

apiOperation[Unit] for void

[12foo]

I can't believe I didn't see that. I made the same mistake in a test servlet I'd forgotten about in my actual project (the main servlet has return types). Thanks! Very sorry for being a dunce.