Unable to Get Slick-Play Integration working - java.lang.ClassNotFoundException: play.core.server.NettyServer

[Prathamesh Bandivadekar]

Hi,

I am trying to follow the Play-Slick integration example as given in https://www.playframework.com/documentation/2.4.x/PlaySlick

Below is my build.sbt

--------------------------------------------------------------

name := "play-slick-tutorial"

version := "1.0-SNAPSHOT"

scalaVersion := "2.11.7"

libraryDependencies ++= Seq(

  "com.typesafe.play" %% "play-slick" % "1.1.1",

  "com.typesafe.play" %% "play-slick-evolutions" % "1.1.1",

  "com.h2database" % "h2" % "1.4.191"

)

lazy val root = (project in file(".")).enablePlugins(PlayScala)

resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"

--------------------------------------------------------------

I am using Java Version 2.8.11 and Scala Version 2.11.8.

--------------------------------------------------------------

My application.conf file content is as below:

application.secret="changeme"

application.langs="en"

db.default.driver=org.h2.Driver

db.default.url="jdbc:h2:mem:play"

db.default.user=sa

db.default.password=""

play.evolutions {

  db.default.enabled = true

}

slick.default="models.*"

logger.root=ERROR

logger.play=INFO

logger.application=DEBUG

--------------------------------------------------------------

i have following folder structure

TestApp

          app

              controllers - Empty

              models - Empty

              dao - Empty

              view - Empty

         conf

              routs

              appliation.conf

         project

             plugins.sbt - content >> 

                                           resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"

                                           addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.3.7")

             build.properties - content >>

                                            sbt.version=0.13.5

         public - Empty

         logs - Empty

When i am running sbt run command i am getting below output:

[info] Set current project to activator-play-slick (in build file:/home/dc-user/scala/activator-play-slick-master-modified/)

java.lang.ClassNotFoundException: play.core.server.NettyServer

        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 play.PlayRun$class.play$PlayRun$$startDevMode(PlayRun.scala:316)

        at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.devModeServer$lzycompute$1(PlayRun.scala:103)

        at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.play$PlayRun$class$$anonfun$$anonfun$$anonfun$$devModeServer$1(PlayRun.scala:103)

        at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:125)

        at play.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:96)

        at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)

[trace] Stack trace suppressed: run last compile:run for the full output.

[error] (compile:run) java.lang.ClassNotFoundException: play.core.server.NettyServer

I am really unable to understand the issue here. If i remove the entry for 

  "com.typesafe.play" %% "play-slick" % "1.1.1",

  "com.typesafe.play" %% "play-slick-evolutions" % "1.1.1",

Compilation succeeds, but that is no use. I wanted to learn play-slick integration and following the steps given in the documentation site.

Thanks in advance.

[Igmar Palsenberg]

 

I am trying to follow the Play-Slick integration example as given in https://www.playframework.com/documentation/2.4.x/PlaySlick

 

             plugins.sbt - content >> 

                                           resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"

                                           addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.3.7")

You reference 2.4.x docs, but this makes it a play 2.3.7 application.  AFAIK, slick doesn't work on 2.3, and 2.3 and 2.4 are binary incompatible. Try setting it to 2.4.8, and try again.

Igmar

[Prathamesh Bandivadekar]

I removed

lazy val root = (project in file(".")).enablePlugins(PlayScala)

and the Netty server is gone.

 But now i am not able to run project with below error:

java.lang.RuntimeException: No main class detected.

I must be doing something wrong, and i am not able to figure it out. Due to lack of knowledge. :-(

[Igmar Palsenberg]

 

I removed

lazy val root = (project in file(".")).enablePlugins(PlayScala)

and the Netty server is gone.

 But now i am not able to run project with below error:

java.lang.RuntimeException: No main class detected.

I must be doing something wrong, and i am not able to figure it out. Due to lack of knowledge. :-(

See my previous message.

Igmar 

[Prathamesh Bandivadekar]

Hi,

I am now able to run application with evolutions working fine.

Actually i was making mistake in plugins.sbt by mentioning older version of sbt plugin. i corrected that and it started working.

Thanks for your help.