我尝试在书中编写一个scala示例：“Play for Scala”，但在Play控制台上收到以下编译错误：

C:\Play\exp\ch6_implicits>activator run

[info] Loading project definition from C:\Play\exp\ch6_implicits\project

[info] Set current project to ch6_implicits (in build file:/C:/Play/exp/ch6_implicits/)

--- (Running the application, auto-reloading is enabled) ---

[info] p.a.l.c.ActorSystemProvider - Starting application default Akka system: application

[info] p.c.s.NettyServer$ - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)

[info] Compiling 13 Scala sources and 1 Java source to C:\Play\exp\ch6_implicits\target\scala-2.11\classes...

[error] C:\Play\exp\ch6_implicits\conf\routes:6: type Application is not a member of package controllers

[error] GET / controllers.Application.index

[error] C:\Play\exp\ch6_implicits\conf\routes:7: type Shop is not a member of package controllers

[error] GET /catalog controllers.Shop.catalog

[error] C:\Play\exp\ch6_implicits\conf\routes:6: type Application is not a member of package controllers

[error] GET / controllers.Application.index

[error] C:\Play\exp\ch6_implicits\conf\routes:7: type Shop is not a member of package controllers

[error] GET /catalog controllers.Shop.catalog

[error] C:\Play\exp\ch6_implicits\conf\routes:6: type Application is not a member of package controllers

[error] GET / controllers.Application.index

[error] C:\Play\exp\ch6_implicits\conf\routes:7: type Shop is not a member of package controllers

[error] GET /catalog controllers.Shop.catalog

[error] 6 errors found

[error] (compile:compileIncremental) Compilation failed

[error] application -

! @6mafk6inc - Internal server error, for (GET) [/products/new] ->

play.sbt.PlayExceptions$CompilationException: Compilation error[type Application is not a member of package controllers]

at play.sbt.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:27) ~[na:na]

at play.sbt.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:27) ~[na:na]

at scala.Option.map(Option.scala:145) ~[scala-library-2.11.6.jar:na]

at play.sbt.run.PlayReload$$anonfun$taskFailureHandler$1.apply(PlayReload.scala:49) ~[na:na]

at play.sbt.run.PlayReload$$anonfun$taskFailureHandler$1.apply(PlayReload.scala:44) ~[na:na]

at scala.Option.map(Option.scala:145) ~[scala-library-2.11.6.jar:na]

at play.sbt.run.PlayReload$.taskFailureHandler(PlayReload.scala:44) ~[na:na]

at play.sbt.run.PlayReload$.compileFailure(PlayReload.scala:40) ~[na:na]

at play.sbt.run.PlayReload$$anonfun$compile$1.apply(PlayReload.scala:17) ~[na:na]

at play.sbt.run.PlayReload$$anonfun$compile$1.apply(PlayReload.scala:17) ~[na:na]

Application.scala是：

package controllers

import play.api._

import play.api.mvc._

// We extend the 'WithCart' trait, so we have an implicit conversion from RequestHeader to Cart

object Application extends Controller with WithCart {

def index = Action { implicit request =>

// The index template takes an implicit Cart, which is not available.

// However, the WithCart trait has an implicit conversion from

// RequestHeader to Cart, and we do have an implicit RequestHeader

// here, because `request` is a Request, which extends RequestHeader.

Ok(views.html.index())

}

def contact = Action { implicit request =>

Ok(views.html.contact())

}

}

Shop.scala是

package controllers

import play.api._

import play.api.mvc._

import models._

object Shop extends Controller with WithCart {

def catalog() = Action { implicit request =>

val products = ProductDAO.list

Ok(views.html.products.catalog(products))

}

}

路由文件是：

# Routes

# This file defines all application routes (Higher priority routes first)

# ~~~~

# Home page

GET / controllers.Application.index

GET /catalog controllers.Shop.catalog

GET /contact controllers.Application.contact

# Map static resources from the /public folder to the /assets URL path

GET /assets/*file controllers.Assets.at(path="/public", file)

Play Framework是2.4.0，大概说：

[ch6_implicits] $ about

[info] This is sbt 0.13.8

[info] The current project is {file:/C:/Play/exp/ch6_implicits/}root 1.0-SNAPSHOT

[info] The current project is built against Scala 2.11.6

[info] Available Plugins: sbt.plugins.IvyPlugin, sbt.plugins.JvmPlugin, sbt.plugins.CorePlugin, sbt.plugins.JUnitXmlReportPlugin, play.sbt.Play, play.sbt.PlayAkkaHttpServer, play.sbt.PlayJava, play.sb

t.PlayLayoutPlugin, play.sbt.PlayNettyServer, play.sbt.PlayScala, play.sbt.routes.RoutesCompiler, play.twirl.sbt.SbtTwirl, com.typesafe.sbt.SbtNativePackager, com.typesafe.sbt.packager.archetypes.Akka

AppPackaging, com.typesafe.sbt.packager.archetypes.JavaAppPackaging, com.typesafe.sbt.packager.archetypes.JavaServerAppPackaging, com.typesafe.sbt.packager.archetypes.jar.ClasspathJarPlugin, com.types

afe.sbt.packager.archetypes.jar.LauncherJarPlugin, com.typesafe.sbt.packager.debian.DebianDeployPlugin, com.typesafe.sbt.packager.debian.DebianPlugin, com.typesafe.sbt.packager.debian.JDebPackaging, c

om.typesafe.sbt.packager.docker.DockerPlugin, com.typesafe.sbt.packager.jdkpackager.JDKPackagerDeployPlugin, com.typesafe.sbt.packager.jdkpackager.JDKPackagerPlugin, com.typesafe.sbt.packager.linux.Li

nuxPlugin, com.typesafe.sbt.packager.rpm.RpmDeployPlugin, com.typesafe.sbt.packager.rpm.RpmPlugin, com.typesafe.sbt.packager.universal.UniversalDeployPlugin, com.typesafe.sbt.packager.universal.Univer

salPlugin, com.typesafe.sbt.packager.windows.WindowsDeployPlugin, com.typesafe.sbt.packager.windows.WindowsPlugin, com.typesafe.sbt.web.SbtWeb, com.typesafe.sbt.jse.SbtJsEngine, com.typesafe.sbt.jse.S

btJsTask, com.typesafe.sbt.coffeescript.SbtCoffeeScript, com.typesafe.sbt.less.SbtLess, com.typesafe.sbt.jshint.SbtJSHint, com.typesafe.sbt.rjs.SbtRjs, com.typesafe.sbt.digest.SbtDigest, com.typesafe.

sbt.mocha.SbtMocha, com.typesafe.sbteclipse.plugin.EclipsePlugin

[info] sbt, sbt plugins, and build definitions are using Scala 2.10.4

[ch6_implicits] $

而Java版本是：

C:\Play\exp\ch6_implicits>java -version

java version "1.8.0_45"

Java(TM) SE Runtime Environment (build 1.8.0_45-b15)

Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

C:\Play\exp\ch6_implicits>javac -version

javac 1.8.0_45

任何想法有什么问题和如何解决这个问题？

到目前为止，其他示例已经在我的环境中编译并运行没有错误。

感谢您的支持！