在controllers.WebJarAssets中找不到合适的构造函数

我有一个简单的播放框架应用程序。我添加了webjars依赖来处理我添加的一些引导库。当我尝试访问我的一个资源窗体屏幕时，我不断收到以下错误消息。在controllers.WebJarAssets中找不到合适的构造函数

play.api.UnexpectedException: Unexpected exception[ProvisionException: Unable to provision, see the following errors: 

1) Could not find a suitable constructor in controllers.WebJarAssets. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private. 
    at controllers.WebJarAssets.class(WebJarAssets.scala:18) 
    while locating controllers.WebJarAssets 
    for parameter 4 at router.Routes.<init>(Routes.scala:40) 
    while locating router.Routes 
    while locating play.api.inject.RoutesProvider 
    while locating play.api.routing.Router 

1 error] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:165) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:121) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at scala.Option.map(Option.scala:146) ~[scala-library.jar:na] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:121) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:119) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at scala.util.Success.flatMap(Try.scala:230) ~[scala-library.jar:na] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:119) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:111) ~[play-server_2.11-2.4.6.jar:2.4.6] 
     at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) ~[scala-library.jar:na] 
     at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) ~[scala-library.jar:na] 
     at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402) ~[na:1.8.0_60] 
     at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) ~[na:1.8.0_60] 
     at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) ~[na:1.8.0_60] 
     at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) ~[na:1.8.0_60] 
     at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) ~[na:1.8.0_60] 
Caused by: com.google.inject.ProvisionException: Unable to provision, see the following errors:

这是我的sbt文件。

name := """PlankTeamAwards""" 

version := "1.0-SNAPSHOT" 

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

scalaVersion := "2.11.6" 

libraryDependencies += evolutions 

libraryDependencies ++= Seq(
    javaJdbc, 
    cache, 
    javaWs 
) 

libraryDependencies ++= Seq(
    "org.webjars" %% "webjars-play" % "2.3.0-2", 
    "org.webjars" % "bootstrap" % "3.3.2" 
) 

// Play provides two styles of routers, one expects its actions to be injected, the 
// other, legacy style, accesses its actions statically. 
routesGenerator := InjectedRoutesGenerator

这里是我的路线文件

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

# Home page 
GET /       controllers.Application.index() 
GET  /hello      controllers.Application.hello(name:String) 

# Employees 
GET  /employees/     controllers.Employees.list() 
GET  /employees/new    controllers.Employees.showBlank() 
GET  /employees/:employeeId  controllers.Employees.show(employeeId: Long) 
POST /employees/     controllers.Employees.save() 

# Map static resources from the /public folder to the /assets URL path 
GET  /assets/*file    controllers.Assets.versioned(path="/public", file: Asset) 
GET  /webjars/*file     controllers.WebJarAssets.at(file)

而且这里是我引用自举css文件我main.scala.html文件。

@(title: String)(content: Html) 

<!DOCTYPE html> 

<html lang="en"> 
    <head> 
     <title>@title</title> 
     <link rel="stylesheet" media="screen" href="@routes.Assets.versioned("stylesheets/main.css")"> 
     <link rel="shortcut icon" type="image/png" href="@routes.Assets.versioned("images/favicon.png")"> 
     <link rel='stylesheet' href='@routes.WebJarAssets.at(WebJarAssets.locate("css/bootstrap.min.css"))'> 
     <script src="@routes.Assets.versioned("javascripts/hello.js")" type="text/javascript"></script> 
    </head> 
    <body> 
     @content 
    </body> 
</html>

来源

2016-01-23 horatius

您需要升级到最新webjars-play：

"org.webjars" %% "webjars-play" % "2.4.0-2"

来源

2016-01-23 22:16:49

没有帮助。我肯定错过了什么。 – horatius

我删除了我的.ivy2文件夹，然后重新运行应用程序并运行。我认为升级到最新的网页 - 玩也有帮助。 – horatius

应用/构建的重新启动应该已经足够。但很高兴它最终奏效。 –

在controllers.WebJarAssets中找不到合适的构造函数

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