I am running my application with Play Framework(version: 2.2.3), it's giving compilation errors like: not found value anorm and not found value jdbc, I am not sure whether it has connected with my database set up or not ? I have checked the question, but still no use. Please help me that where I am doing wrong ?.
I have done the following:
build.scala:
import sbt._
object AppBuild extends Build {
val appDependencies = Seq(
jdbc,
"com.google.inject" % "guice" % "3.0",
"javax.inject" % "javax.inject" % "1",
"org.postgresql" % "postgresql" % "9.4-1200-jdbc41",
"com.typesafe.play" % "play-iteratees_2.10" % "2.2.3"
)
val main = play.Project(appName, appVersion, appDependencies).settings(
// we can add our own project settings
)
}
app.scala:
package models
import anorm._
import anorm.SqlParser._
import play.api.db.DB
import play.api.db._
import play.api.Play.current
case class Test(id: Pk[Long], content: String)
object Test {
def create(test: Test): Unit = {
DB.withConnection { implicit connection =>
SQL("insert into test(content) values ({content})").on(
'content -> test.content
).executeUpdate()
}
}
}
plugins.sbt:
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.2.3")
app.conf:
db.default.driver=org.postgresql.Driver
db.default.url="jdbc:postgresql://localhost:5432/abcdatabase"
Related
Im really new to this microservice world and was trying to learn from scratch. But for some reason not able to call a simple dependency.
Getting the error
object twitter is not a member of package com import
com.twitter.finagle._
SBT file, Ive tried three ways
Trial 1
name := "microservicestest"
version := "0.1"
scalaVersion := "2.12.15"
libraryDependencies ++= Seq(
"com.github.finagle" %% "finch-core" % "0.31.0",
"com.github.finagle" %% "finch-circe" % "0.31.0",
"io.circe" %% "circe-generic" % "0.9.0"
)
Trial 2 (puttting just the dependency line in here)
libraryDependencies += "com.twitter" %% "finagle-http" % "21.8.0"
Trial 3
libraryDependencies ++= Seq(
"com.github.finagle" %% "finch-core" % "0.15.1"
)
Scala file
import io.finch._
import com.twitter.finagle.Http
import com.twitter.util.Await
object HelloWorld extends App {
val api: Endpoint[String] = get("hello") { Ok("Hello, World!") }
Await.ready(Http.server.serve(":8080", api.toServiceAs[Text.Plain]))
}
SBT file
libraryDependencies += "com.twitter" %% "finagle-http" % "21.8.0"
Working simple code
import com.twitter.finagle.{Http, Service}
import com.twitter.finagle.http
import com.twitter.util.{Await, Future}
object HelloWorld extends App {
val service = new Service[http.Request, http.Response] {
def apply(req: http.Request): Future[http.Response] =
Future.value(http.Response(req.version, http.Status.Ok))
}
val server = Http.serve(":8080", service)
Await.ready(server)
}
I am transitioning from Java to Scala. I have written a simple test to render a view. Like :
import org.scalatestplus.play.PlaySpec
import org.scalatest._
import org.slf4j.LoggerFactory
import play.test.WithApplication
class EvTemplateTests extends PlaySpec{
implicit lazy val log = LoggerFactory.getLogger(getClass)
//run your test//run your test
"render eval template" in {
val html = views.html.index("Hello")
contentType(html) must equalTo("text/html")
contentAsString(html) must contain("Welcome to Play!")
}
}
When compiling, looks like it is not finding "index","contentType", "contentAsString" etc.Looks like, the project is using the libraries:
lazy val thirdPartyDependencies = Seq(
jdbc,
"com.typesafe.play" %% "anorm" % "2.4.0",
"com.typesafe.play" %% "play-mailer" % "3.0.1",
"com.microsoft.sqlserver" % "mssql-jdbc" % "6.4.0.jre8",
"io.swagger" %% "swagger-play2" % "1.5.0", // This version adds Play 2.4 support.
// ScalaTest+ Play (have to use non-release 1.4.0-M4 version for now as it is only compatible with Play 2.4)
"org.scalatestplus" %% "play" % "1.4.0-M4" % "test",
"org.mockito" % "mockito-core" % "1.10.19" % "test"
)
May I get any insight?
You can start from here:
import controllers.AssetsFinder
import org.specs2.mutable.Specification
import play.api.Application
import play.api.inject.guice.GuiceApplicationBuilder
import play.api.mvc._
import play.api.test._
import play.api.test.Helpers._
class EvTemplateTests
extends Specification
with DefaultAwaitTimeout
with FutureAwaits
with Results {
val application: Application = GuiceApplicationBuilder().build()
"render eval template" in new WithApplication(app = application) {
implicit val assetsFinder = app.injector.instanceOf[AssetsFinder]
val html = views.html.index("Hello")
contentType(html) mustEqual "text/html"
contentAsString(html) must contain("Hello")
}
}
add this after jdbc in LibraryDependencies: specs2 % Test
Most important part of test setup here is implicit AssetFinder that derived from GuiceApplicationBuilder:
val application: Application = GuiceApplicationBuilder().build()
AssetFinder is really important part of view testing in PlayFramework
I'm attempting to create a filter to collect metrics related to request fulfillment time in a Scala Play 2.5 app. I am following this documentation.
It instructs me to create a class that extends DefaultHttpFilters. However, I am unable to import this class! import play.api.http.DefaultHttpFilters is unrecognized. It occurred to me that I may need to make an addition to build.sbt, so I added filters to libraryDependencies in that file, but still no luck. The truly strange thing is that import play.api.http.HttpFilters is recognized. DefaultHttpFilters lives in the same package, and in fact implements the HttpFilters trait, so I'm rather bamboozled by the fact that the import is unrecognized.
Any advice would be greatly appreciated, and please let me know if I can provide any further information to help in diagnosing the issue.
Here is my build.sbt:
name := """REDACTED"""
version := "1.0.0"
lazy val root = (project in file(".")).enablePlugins(PlayScala)
scalaVersion := "2.11.7"
routesGenerator := InjectedRoutesGenerator
resolvers += "scalaz-bintray" at "https://dl.bintray.com/scalaz/releases"
libraryDependencies ++= Seq(
ws,
filters,
"com.typesafe.play" %% "play-slick" % "2.0.0",
"com.h2database" % "h2" % "1.4.187",
"org.scalatestplus.play" %% "scalatestplus-play" % "1.5.0" % "test",
"mysql" % "mysql-connector-java" % "5.1.39",
specs2 % Test
)
unmanagedJars in Compile += file(Path.userHome+"/lib/*.jar")
resolvers += "Sonatype snapshots" at "http://oss.sonatype.org/content/repositories/snapshots/"
fork in run := true
Here is plugins.sbt:
resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.5.0")
addSbtPlugin("com.jamesward" %% "play-auto-refresh" % "0.0.14")
addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.3.5")
Filters are defined in the following way
app/filters/AccessLoggingFilter.scala:
import javax.inject.Inject
import akka.stream.Materializer
import play.api.Logger
import play.api.mvc.{Filter, RequestHeader, Result}
import play.api.routing.Router.Tags
import scala.concurrent.Future
class AccessLoggingFilter #Inject() (implicit val mat: Materializer) extends Filter {
def apply(nextFilter: RequestHeader => Future[Result])(requestHeader: RequestHeader): Future[Result] = {
val requestStartTime = System.nanoTime
nextFilter(requestHeader).map { result =>
val requestedAction = requestHeader.tags(Tags.RouteController) + "." + requestHeader.tags(Tags.RouteActionMethod)
val requestFulfillmentTime = System.nanoTime - requestStartTime
Logger.info("Request for " + requestedAction + " resulted in status code " + result.header.status +
" and had request fulfillment time " + requestFulfillmentTime + " nanoseconds")
result.withHeaders("Request-Time" -> requestFulfillmentTime.toString)
}
}
}
And then app/filters/Filters.scala:
package filters
import javax.inject.Inject
class Filters #Inject() (accessLoggingFilter: AccessLoggingFilter) { }
DefaultHttpFilters was only introduced in Play 2.5.4, and you are using Play 2.5.0.
So change your Play version to 2.5.4 at least (the current version at the time of writing is 2.5.6)
// In plugins.sbt
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.5.4")
Then, just reload the project and update your dependencies (activator update)
If you really need to use that version, use HttpFilters instead (same example from "Using filters")
import javax.inject.Inject
import play.api.http.HttpFilters
import play.filters.gzip.GzipFilter
class Filters #Inject() (
gzip: GzipFilter,
log: LoggingFilter
) extends HttpFilters {
val filters = Seq(gzip, log)
}
After run i getting this object mongodb is not a member of package com in Play
I cant resolve that problem. Im trying to do Play Scala MongoDB and from client side Scala.js
my build.sbt is >
lazy val server = (project in file("server")).settings(
scalaVersion := scalaV,
scalaJSProjects := clients,
pipelineStages := Seq(scalaJSProd, gzip),
resolvers += "scalaz-bintray" at "https://dl.bintray.com/scalaz/releases",
libraryDependencies ++= Seq(
"com.vmunier" %% "play-scalajs-scripts" % "0.3.0",
"org.mongodb" %% "casbah" % "3.1.0",
"org.webjars" % "jquery" % "1.11.1",
"com.novus" %% "salat" % "1.9.9",
"se.radley" %% "play-plugins-salat" % "1.5.0",
"commons-codec" % "commons-codec" % "1.6",
specs2 % Test
object code
package model
import com.mongodb.DBObject
import com.mongodb.casbah.MongoConnection
import com.mongodb.casbah.commons.MongoDBObject
/**
* Created by qqQQaAs on 2016-01-04.
*/
object AllBooks {
def toJson() {
val collection = MongoConnection()("books")("books")
val query = "Krakow"
// simply convert the result to a string, separating items with a comma
// this string goes inside an "array", and it's ready to hit the road
val json = "[%s]".format(
collection.find(query).toList.mkString(",")
)
}
Controller
package controllers
import com.mongodb.casbah._
import model.AllBooks
import play.api.mvc._
import shared.SharedMessages
object Application extends Controller {
def index = Action {
Ok(views.html.index(SharedMessages.itWorks))
}
def service() = Action {
val json = AllBooks.toJson()
Ok(json).as("application/json")
}
}
Thanks for help guys
You should import the following pages as per the official documentation:
import org.mongodb.scala._
import org.bson._
TL/DR: Checkout last two commits and run sbt clean compile: https://github.com/mirelon/akka-in-action/tree/json/chapter2
There is RestInterface.scala:
package com.goticks
import akka.actor._
import spray.routing._
import spray.http.StatusCodes
import spray.httpx.SprayJsonSupport._
import spray.routing.RequestContext
import akka.util.Timeout
import scala.concurrent.duration._
import scala.language.postfixOps
class RestInterface extends HttpServiceActor
with RestApi {
def receive = runRoute(routes)
}
trait RestApi extends HttpService { actor: Actor =>
import context.dispatcher
import com.goticks.TicketProtocol._
implicit val timeout = Timeout(10 seconds)
import akka.pattern.ask
def routes: Route =
path("events") {
get { requestContext =>
context.actorOf(Props[Resu]).ask(GetEvents)
}
}
}
class Responder(requestContext:RequestContext) extends Actor {
import TicketProtocol._
def receive = {
case Events(events) =>
requestContext.complete(StatusCodes.OK, events)
self ! PoisonPill
}
}
and Resu.scala (note that Resu is alphabetically after RestInterface)
package com.goticks
import akka.actor.Actor
class Resu extends Actor {
import TicketProtocol._
import spray.json._
def receive = {
case GetEvents => {
println(Event(event = "E").toJson)
}
}
}
object TicketProtocol {
import spray.json._
case class Event(event:String)
case object GetEvents
case class Events(events:List[Event])
object Event extends DefaultJsonProtocol {
implicit val format = jsonFormat1(Event.apply)
}
}
build.sbt:
name := "goticks"
version := "0.1-SNAPSHOT"
organization := "com.goticks"
scalaVersion := "2.11.1"
libraryDependencies ++= {
val akkaVersion = "2.3.4"
val sprayVersion = "1.3.1"
Seq(
"com.typesafe.akka" %% "akka-actor" % akkaVersion,
"io.spray" %% "spray-can" % sprayVersion,
"io.spray" %% "spray-routing" % sprayVersion,
"io.spray" %% "spray-json" % "1.2.6"
)
}
build.properties;
sbt.version=0.13.7
plugins.sbt:
resolvers += Classpaths.typesafeResolver
resolvers += "sbt-idea" at "http://mpeltonen.github.com/maven/"
addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.6.0")
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.11.2")
addSbtPlugin("com.typesafe.sbt" % "sbt-start-script" % "0.10.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-multi-jvm" % "0.3.8")
Compilation issue
When I run sbt clean compile, everything is ok. But when I refactor the Resu class into Ress (note that Ress is alphabetically before RestInterface) (also rename its file, the diff can be viewed here: https://github.com/mirelon/akka-in-action/commit/583ca801fb7d1564024eee2f98d57f03ecacc6e5), then there is a compilation error:
[error] /home/miso/IdeaProjects/akka-in-action/chapter2/src/main/scala/com/goticks/Ress.scala:12: Cannot find JsonWriter or JsonFormat type class for com.goticks.TicketProtocol.Event
[error] println(Event(event = "E").toJson)
[error] ^
[error] one error found
[error] (compile:compile) Compilation failed
Clearly there is an implicit json writer missing. Could it be due to incorrect order of compiling? Could sbt compile the classes in alphabetical order, ignoring imports?
Yes, sbt always compiles in alphabetical order. The issue is sbt has no idea the dependencies between files until it runs the compiler.
What you're seeing is the scala compiler itself is dependent on the ordering of source files. Sbt always sorts source files so you can at least work around these issues by placing code in an ordering that works.
I'm not 100% sure why you're hitting such an issue from some implicits + macro hackery, but that could be wrong.