play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: slick/backend/DatabaseConfig] - scala

Question

I'm tring to setup a project with play framework and postgres with slick-codegen. My project is compiling without errors And the Tables class generated is correct. But when I run the project it give me the play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: slick/backend/DatabaseConfig].
This is the full trace:
play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: slick/backend/DatabaseConfig]
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:184)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131)
at scala.Option.map(Option.scala:146)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129)
at scala.util.Success.flatMap(Try.scala:231)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:129)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:121)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
Caused by: java.lang.NoClassDefFoundError: slick/backend/DatabaseConfig
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:688)
at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:380)
at com.google.inject.internal.ConstructorBindingImpl.getInternalDependencies(ConstructorBindingImpl.java:165)
at com.google.inject.internal.InjectorImpl.getInternalDependencies(InjectorImpl.java:616)
at com.google.inject.internal.InjectorImpl.cleanup(InjectorImpl.java:572)
at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:558)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:887)
Caused by: java.lang.ClassNotFoundException: slick.backend.DatabaseConfig
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:688)
at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:380)
at com.google.inject.internal.ConstructorBindingImpl.getInternalDependencies(ConstructorBindingImpl.java:165)
at com.google.inject.internal.InjectorImpl.getInternalDependencies(InjectorImpl.java:616)
I have my project split in 2 subprojects. The Play project and the codegen project that is used to generate the Tables class.
My build.sbt looks like this:
import sbt.Keys._
val slickVersion = "3.2.0"
scalaVersion := "2.11.8"
// The Play project itself
lazy val root = (project in file("."))
.settings(
libraryDependencies ++= List(
"com.netaporter" %% "scala-uri" % "0.4.14",
"net.codingwell" %% "scala-guice" % "4.1.0",
"com.typesafe.play" %% "play-slick" % "2.0.2",
"com.typesafe.play" %% "play-slick-evolutions" % "2.0.2"
)
)
.settings(sharedSettings)
.enablePlugins(Common, PlayScala)
.settings(
name := """Play app"""
)
.dependsOn(codegen)
lazy val codegen = project
.settings(sharedSettings)
.settings(
libraryDependencies ++= List(
"com.typesafe.slick" %% "slick-codegen" % slickVersion
)
)
lazy val sharedSettings = Seq(
scalaVersion := "2.11.8",
scalacOptions := Seq("-feature", "-unchecked", "-deprecation"),
libraryDependencies ++= List(
"com.typesafe.scala-logging" %% "scala-logging-slf4j" % "2.1.2",
"org.slf4j" % "slf4j-api" % "1.7.23",
"org.slf4j" % "log4j-over-slf4j" % "1.7.23", // for any java classes looking for this
"ch.qos.logback" % "logback-classic" % "1.2.1",
"com.typesafe.slick" %% "slick" % slickVersion,
"org.postgresql" % "postgresql" % "9.4.1212",
"com.github.tminglei" %% "slick-pg" % "0.15.0-RC",
"com.github.tminglei" %% "slick-pg_play-json" % "0.15.0-RC",
"com.github.tminglei" %% "slick-pg_joda-time" % "0.15.0-RC",
"com.github.tminglei" %% "slick-pg_jts" % "0.15.0-RC",
"joda-time" % "joda-time" % "2.9.7",
"org.joda" % "joda-convert" % "1.8"
)
)
I also tried removing all the code that use database and the Tables class but i still get this error.
I use a custom postgres driver and it is in the codegen project but is i add the dependsOn(codegen) in the root project, it should not be a problem. Also it is compling without problems with sbt compile.
EDIT:
After some testings, i changed the slick version to 3.1.1 and com.github.tminglei versions to 0.14.3 and it now works for me.

Answer 1

I had the same classapth problem and in the end used the following versions in a play-2.5.x and scala-2.11 project:
libraryDependencies ++= List(
"com.typesafe.play" %% "play-slick" % "2.1.0",
"com.typesafe.play" %% "play-slick-evolutions" % "2.1.0",
"com.typesafe.slick" %% "slick" % "3.2.0",
"com.github.tototoshi" %% "slick-joda-mapper" % "2.3.0"
}
The slick.backend.DatabaseConfig comes from slick-3.1.0 that was needed by play-slick-2.0.2. Since you wanted slick-3.2.0 you need to use play-slick-2.1.0 see https://github.com/playframework/play-slick and https://github.com/tototoshi/slick-joda-mapper .