如何使用sbt(非播放)构建Play框架示例应用程序? [英] How to build play framework sample application using sbt (not play)?

问题描述

在示例应用程序中调用sbt时，我得到了NPE.

I am getting an NPE when invoking sbt within a sample app.

请注意:我们无法使用播放"来运行整个应用程序:我们需要能够通过sbt来运行它.

Please note: we can not run our overall app using "play": we need to be able to run this via sbt.

C:\apps\playframework\samples\scala\websocket-chat>sbt
java.lang.NullPointerException
        at sbt.StringUtilities$.nonEmpty(StringUtilities.scala:14)
        at sbt.impl.GroupArtifactID.$percent(DependencyBuilders.scala:50)
        at $f01bf36bc7174607fa7f$.$sbtdef(C:\apps\playframework\samples\scala\websocket-chat\project\plugins.sbt:8)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at sbt.compiler.Eval$.getValue(Eval.scala:420)
        at sbt.compiler.Eval$$anonfun$4.apply(Eval.scala:87)
        at sbt.compiler.Eval$$anonfun$4.apply(Eval.scala:87)
        at sbt.EvaluateConfigurations$$anonfun$evaluateSetting$1.apply(EvaluateConfigurations.scala:150)
        at sbt.EvaluateConfigurations$$anonfun$evaluateSetting$1.apply(EvaluateConfigurations.scala:148)
        at sbt.EvaluateConfigurations$$anonfun$flatten$1$$anonfun$apply$5.apply(EvaluateConfigurations.scala:115)
        at sbt.EvaluateConfigurations$$anonfun$flatten$1$$anonfun$apply$5.apply(EvaluateConfigurations.scala:115)
        at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
        at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
        at scala.collection.immutable.List.foreach(List.scala:318)
        at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251)
        at scala.collection.AbstractTraversable.flatMap(Traversable.scala:105)
        at sbt.EvaluateConfigurations$$anonfun$flatten$1.apply(EvaluateConfigurations.scala:115)
        at sbt.EvaluateConfigurations$$anonfun$flatten$1.apply(EvaluateConfigurations.scala:115)
        at sbt.EvaluateConfigurations$$anonfun$evaluateSbtFile$1.apply(EvaluateConfigurations.scala:110)
        at sbt.EvaluateConfigurations$$anonfun$evaluateSbtFile$1.apply(EvaluateConfigurations.scala:110)
        at sbt.Load$.sbt$Load$$loadSettingsFile$1(Load.scala:507)
        at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:502)
        at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:501)
        at scala.Option.getOrElse(Option.scala:120)
        at sbt.Load$.sbt$Load$$memoLoadSettingsFile$1(Load.scala:501)
        at sbt.Load$$anonfun$loadSettings$1$2.apply(Load.scala:500)
        at sbt.Load$$anonfun$loadSettings$1$2.apply(Load.scala:500)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
        at scala.collection.AbstractTraversable.map(Traversable.scala:105)
        at sbt.Load$.loadSettings$1(Load.scala:500)
        at sbt.Load$.sbt$Load$$expand$1(Load.scala:523)
        at sbt.Load$.loadSettings(Load.scala:528)
        at sbt.Load$.sbt$Load$$loadSbtFiles$1(Load.scala:464)
        at sbt.Load$.defaultLoad$1(Load.scala:475)

编辑，这是项目\ plugins.sbt

EDIT Here is the project\plugins.sbt

logLevel := Level.Warn

addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.5")

addSbtPlugin("com.typesafe.sbt" % "sbt-scalariform" % "1.0.1")

addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "0.6.0")

addSbtPlugin("play" % "sbt-plugin" % Option(System.getProperty("play.version")).getOrElse("2.0"))

libraryDependencies <+= sbtVersion { sv =>
  "org.scala-sbt" % "scripted-plugin" % sv
}

该行:

addSbtPlugin("play" % "sbt-plugin" % Option(System.getProperty("play.version")).getOrElse("2.0"))

导致以下情况:

[warn]
sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.0: not found
        at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:214)

编辑详细信息

C:\apps\play\framework>sbt package
"sbt13"
Picked up _JAVA_OPTIONS: -Djava.net.preferIPv4Stack=true
[info] Loading project definition from C:\apps\play\framework\project
[warn]  module not found: play#sbt-plugin;2.2.3
[warn] ==== typesafe-ivy-releases: tried
[warn]   http://repo.typesafe.com/typesafe/ivy-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.2.3/ivys/ivy.xml
[warn] ==== sbt-plugin-releases: tried
[warn]   http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/play/sbt-plugin/scala_2.9.2/sbt_0.12/2.2.3/ivys/ivy.xml
[warn] ==== local: tried
[warn]   C:\Users\S80035683\.ivy2\local\play\sbt-plugin\scala_2.9.2\sbt_0.12\2.2.3\ivys\ivy.xml
[warn] ==== public: tried
[warn]   http://repo1.maven.org/maven2/play/sbt-plugin_2.9.2_0.12/2.2.3/sbt-plugin-2.2.3.pom
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: play#sbt-plugin;2.2.3: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn]  Note: Some unresolved dependencies have extra attributes.  Check that these dependencies exist with the requested attributes.
[warn]          play:sbt-plugin:2.2.3 (sbtVersion=0.12, scalaVersion=2.9.2)
[warn]
sbt.ResolveException: unresolved dependency: play#sbt-plugin;2.2.3: not found
        at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:214)
        at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:122)

推荐答案

编辑project/plugins.sbt并进行更改

addSbtPlugin("com.typesafe.play" % "sbt-plugin" % System.getProperty("play.version"))

到

addSbtPlugin("play" % "sbt-plugin" % Option(System.getProperty("play.version")).getOrElse("2.2.3"))

您还可以获得一个更新的Play版本，该问题似乎已得到解决.

You can also get an updated Play version, where this issue seems to be fixed.

如果需要，还可以设置系统属性play.version.

You can also set the system property play.version, if you want.

确保在plugins.sbt的解析器中包括Typesafe存储库.

Make sure you are including Typesafe repository in the resolvers in your plugins.sbt.

resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"

这篇关于如何使用sbt(非播放)构建Play框架示例应用程序?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！