scala - Correction for error: - required:spray.httpx.marshalling.ToResponseMarshallable -

i'm new scala, , trying write little rest api. using scala 11.2, spray 1.3.1 , akka 2.3.6.

i trying compile example spray. error each of routes is: type mismatch; found : string("pong!!!!!!!!") required: spray.httpx.marshalling.toresponsemarshallable

i unsure if versions incompatibility issue or missing reference.

here route definition taken spray example :

package com.shenandoah.sbir.httpinterface       import spray.routing.httpservice      trait httpinterface extends httpservice {           def pingroute = path("ping") {         { complete("pong!!!!!!!!") }       }        def pongroute = path("pong") {         { complete("pong!?") }       }          def piproute = path("pip") {         { complete("moonshine") }       }        def rootroute = pingroute ~ pongroute ~ piproute     }      here actor:      package com.shenandoah.sbir.httpinterface      import akka.actor._      class httpinterfaceactor extends httpinterface actor {       // httpservice trait defines       // 1 abstract member, connects services environment       // enclosing actor or test.       def actorreffactory = context         def receive = runroute(rootroute) 

}

you using dependency "io.spray" % "spray-routing" % "2.3.6" scala 2.10. there spray version published without scala version designation, compiled against scala 2.10. unfortunate.

use "io.spray" %% "spray-routing" % "2.3.6" (note double %) pull in dependency matching scala version. work both scala 2.10 , 2.11.