Slick with PostgreSQL Scala SBT Intellij IDEA - postgresql

Question

I am trying to create a project with Slick in Intellij IDEA with PostgreSQL driver. But I have managed to find only this tutorial
I followed it, but I have got an error:
Exception in thread "main" java.lang.ExceptionInInitializerError
at Main.main(Main.scala)
Caused by: com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'url'
Here is my code for the main class:
import scala.slick.driver.PostgresDriver.simple._
object Main {
case class Song(
id: Int,
name: String,
singer: String)
class SongsTable(tag: Tag) extends Table[Song](tag, "songs") {
def id = column[Int]("id")
def name = column[String]("name")
def singer = column[String]("singer")
def * = (id, name, singer) <> (Song.tupled, Song.unapply)
}
lazy val songsTable = TableQuery[SongsTable]
val db = Database.forConfig("scalaxdb")
def main(args: Array[String]): Unit = {
val connectionUrl = "jdbc:postgresql://localhost/songs?user=postgres&password=postgresp"
Database.forURL(connectionUrl, driver = "org.postgresql.Driver") withSession {
implicit session =>
val songs = TableQuery[SongsTable]
songs.list foreach { row =>
println("song with id " + row.id + " has name " + row.name + " and a singer is " + row.singer)
}
}
}
}
These is application.conf file:
scalaxdb = {
dataSourceClass = "slick.jdbc.DatabaseUrlDataSource"
properties = {
driver = "org.postgresql.Driver"
url = "jdbc:postgresql://localhost/dbname?user=user&password=password"
}
}
And this is build.sbt:
libraryDependencies ++= Seq(
"org.postgresql" % "postgresql" % "9.3-1100-jdbc4",
"com.typesafe.slick" %% "slick" % "2.1.0",
"org.slf4j" % "slf4j-nop" % "1.6.4"
)
I can not figure out what I am doing wrong. I would be very grateful for any advice on fixing this.

Answer 1

Don't you mind to use a little more up-to-date version of Slick?
import slick.jdbc.PostgresProfile.api._
import scala.concurrent.Await
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.duration._
object Main {
case class Song(
id: Int,
name: String,
singer: String)
class SongsTable(tag: Tag) extends Table[Song](tag, "songs") {
def id = column[Int]("id")
def name = column[String]("name")
def singer = column[String]("singer")
def * = (id, name, singer) <> (Song.tupled, Song.unapply)
}
val db = Database.forConfig("scalaxdb")
val songs = TableQuery[SongsTable]
def main(args: Array[String]): Unit = {
Await.result({
db.run(songs.result).map(_.foreach(row =>
println("song with id " + row.id + " has name " + row.name + " and a singer is " + row.singer)))
}, 1 minute)
}
}
build.sbt
scalaVersion := "2.12.4"
libraryDependencies += "com.typesafe.slick" %% "slick" % "3.2.1"
libraryDependencies += "org.slf4j" % "slf4j-nop" % "1.7.25"
libraryDependencies += "com.typesafe.slick" %% "slick-hikaricp" % "3.2.1"
libraryDependencies += "org.postgresql" % "postgresql" % "42.1.4"