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我試圖將基本的play應用程序連接到遠程postgres數據庫。在克服了一些障礙之後，我現在陷入了連接時似乎無法解釋的例外。該應用程序僅比從「activator new」創建的應用程序更多。如何將scala play應用程序連接到postgres數據庫
TL;博士
當創建的播放應用數據庫，將拋出一個異常：
[ClassNotFoundException: slick.jdbc.hikaricp.HikariCPJdbcDataSource$]
詳細
這裏是我的簡單application.scala：
package controllers
import play.api._
import play.api.mvc._
import play.api.Logger
import slick.jdbc.JdbcBackend.Database
class Application extends Controller {
def index = Action {
testdb()
Ok(views.html.index("Your new application is ready."))
}
def testdb(): Unit = {
val db = Database.forConfig("db.local")
}
}
而且我build.sbt：
name := """elophant"""
version := "0.0.1"
lazy val root = (project in file(".")).enablePlugins(PlayScala)
scalaVersion := "2.11.6"
libraryDependencies ++= Seq(
jdbc,
cache,
ws,
specs2 % Test,
"org.postgresql" % "postgresql" % "9.4-1204-jdbc4",
"com.zaxxer" % "HikariCP" % "2.4.1",
"com.typesafe.slick" %% "slick" % "3.1.0",
"org.slf4j" % "slf4j-nop" % "1.6.4"
)
resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"
routesGenerator := InjectedRoutesGenerator
而且application.conf：
play.crypto.secret = "xxx"
play.i18n.langs = [ "en" ]
db.local.driver: org.postgresql.Driver
db.local.url="jdbc:postgresql://"${?ELOPHANT_GATEWAY}":xxx/elophant"
db.local.username=elophantuser
db.local.password=${?ELOPHANT_USER_PASSWORD}
（注：我覈實，上述的環境變量都設置正確）
但是，當我點擊索引操作時，出現以下異常：
[info] - application - Creating Pool for datasource 'local'
[info] - play.api.db.DefaultDBApi - Database [local] connected at jdbc:postgresql://174.1.53.209:19213/elophant
[info] - play.api.Play - Application started (Dev)
[error] - application -
! @6nnd5nh6h - Internal server error, for (GET) [/] ->
play.api.http.HttpErrorHandlerExceptions$$anon$1: Execution exception[[ClassNotFoundException: slick.jdbc.hikaricp.HikariCPJdbcDataSource$]]
at play.api.http.HttpErrorHandlerExceptions$.throwableToUsefulException(HttpErrorHandler.scala:265) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.http.DefaultHttpErrorHandler.onServerError(HttpErrorHandler.scala:191) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.GlobalSettings$class.onError(GlobalSettings.scala:179) [play_2.11-2.4.3.jar:2.4.3]
at play.api.DefaultGlobal$.onError(GlobalSettings.scala:212) [play_2.11-2.4.3.jar:2.4.3]
at play.api.http.GlobalSettingsHttpErrorHandler.onServerError(HttpErrorHandler.scala:94) [play_2.11-2.4.3.jar:2.4.3]
at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$9$$anonfun$apply$1.applyOrElse(PlayDefaultUpstreamHandler.scala:158) [play-netty-server_2.11-2.4.3.jar:2.4.3]
at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$9$$anonfun$apply$1.applyOrElse(PlayDefaultUpstreamHandler.scala:155) [play-netty-server_2.11-2.4.3.jar:2.4.3]
at scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:36) [scala-library-2.11.6.jar:na]
at scala.util.Failure$$anonfun$recover$1.apply(Try.scala:215) [scala-library-2.11.6.jar:na]
at scala.util.Try$.apply(Try.scala:191) [scala-library-2.11.6.jar:na]
at scala.util.Failure.recover(Try.scala:215) [scala-library-2.11.6.jar:na]
at scala.concurrent.Future$$anonfun$recover$1.apply(Future.scala:324) [scala-library-2.11.6.jar:na]
at scala.concurrent.Future$$anonfun$recover$1.apply(Future.scala:324) [scala-library-2.11.6.jar:na]
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) [scala-library-2.11.6.jar:na]
at play.api.libs.iteratee.Execution$trampoline$.executeScheduled(Execution.scala:109) [play-iteratees_2.11-2.4.3.jar:2.4.3]
at play.api.libs.iteratee.Execution$trampoline$.execute(Execution.scala:71) [play-iteratees_2.11-2.4.3.jar:2.4.3]
at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:40) [scala-library-2.11.6.jar:na]
at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:248) [scala-library-2.11.6.jar:na]
at scala.concurrent.Promise$class.complete(Promise.scala:55) [scala-library-2.11.6.jar:na]
at scala.concurrent.impl.Promise$DefaultPromise.complete(Promise.scala:153) [scala-library-2.11.6.jar:na]
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:23) [scala-library-2.11.6.jar:na]
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40) [akka-actor_2.11-2.3.13.jar:na]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397) [akka-actor_2.11-2.3.13.jar:na]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [scala-library-2.11.6.jar:na]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [scala-library-2.11.6.jar:na]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [scala-library-2.11.6.jar:na]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [scala-library-2.11.6.jar:na]
Caused by: java.lang.ClassNotFoundException: slick.jdbc.hikaricp.HikariCPJdbcDataSource$
at java.lang.ClassLoader.findClass(ClassLoader.java:530) ~[na:1.8.0_60]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_60]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_60]
at slick.util.ClassLoaderUtil$$anon$1.loadClass(ClassLoaderUtil.scala:12) ~[slick_2.11-3.1.0.jar:na]
at slick.jdbc.JdbcDataSource$.loadFactory$1(JdbcDataSource.scala:30) ~[slick_2.11-3.1.0.jar:na]
at slick.jdbc.JdbcDataSource$.forConfig(JdbcDataSource.scala:35) ~[slick_2.11-3.1.0.jar:na]
at slick.jdbc.JdbcBackend$DatabaseFactoryDef$class.forConfig(JdbcBackend.scala:268) ~[slick_2.11-3.1.0.jar:na]
at slick.jdbc.JdbcBackend$$anon$3.forConfig(JdbcBackend.scala:33) ~[slick_2.11-3.1.0.jar:na]
at controllers.Application.testdb(Application.scala:17) ~[classes/:na]
at controllers.Application$$anonfun$index$1.apply(Application.scala:11) ~[classes/:na]
at controllers.Application$$anonfun$index$1.apply(Application.scala:10) ~[classes/:na]
at play.api.mvc.ActionBuilder$$anonfun$apply$17.apply(Action.scala:439) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.ActionBuilder$$anonfun$apply$17.apply(Action.scala:439) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.ActionBuilder$$anonfun$apply$16.apply(Action.scala:408) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.ActionBuilder$$anonfun$apply$16.apply(Action.scala:407) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$.invokeBlock(Action.scala:533) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$.invokeBlock(Action.scala:530) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:493) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$4$$anonfun$apply$5.apply(Action.scala:105) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$4$$anonfun$apply$5.apply(Action.scala:105) ~[play_2.11-2.4.3.jar:2.4.3]
at play.utils.Threads$.withContextClassLoader(Threads.scala:21) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$4.apply(Action.scala:104) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$4.apply(Action.scala:103) ~[play_2.11-2.4.3.jar:2.4.3]
at scala.Option.map(Option.scala:146) ~[scala-library-2.11.6.jar:na]
at play.api.mvc.Action$$anonfun$apply$1.apply(Action.scala:103) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.mvc.Action$$anonfun$apply$1.apply(Action.scala:96) ~[play_2.11-2.4.3.jar:2.4.3]
at play.api.libs.iteratee.DoneIteratee$$anonfun$mapM$2.apply(Iteratee.scala:741) ~[play-iteratees_2.11-2.4.3.jar:2.4.3]
at play.api.libs.iteratee.DoneIteratee$$anonfun$mapM$2.apply(Iteratee.scala:741) ~[play-iteratees_2.11-2.4.3.jar:2.4.3]
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) [scala-library-2.11.6.jar:na]
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) [scala-library-2.11.6.jar:na]
... 6 common frames omitted
一些使用Google提示我在我的build.sbt中包含了hikari庫，但它似乎沒有幫助（另外，它不在任何遊戲本身的文檔中）。
我的java配置技能可以忽略不計，所以任何幫助將不勝感激！