Play 后编译错误！框架新应用指南

Question

我使用 Fedora 22 操作系统，我正在尝试开始使用 Play！框架。自然，我正在尝试构建最简单的应用程序，以便有一个起点。

我尽量按照文档 (https://www.playframework.com/documentation/2.4.x/NewApplication) 中的指南进行操作，但在这里没有成功。当我在项目的基本文件夹中调用激活器并指示我一些未解决的依赖项时，它失败了。我将发布我已采取的步骤，以便尽可能清楚地展示我所做的事情和问题，包括一些关于 Java 的信息（我在某处读到我应该使用 Oracle Java 而不是 OpenJDK，所以我下载了最新的Java SE JDK 7) 和 sbt，我相信这与进程有关。 我的操作系统是葡萄牙语，所以有几行是葡萄牙语，但由于它们指的是众所周知的命令（基本上是命令替代品），我认为这不会损害理解。

su -

[root@localhost ~]# alternatives --config java

Há 3 programas que oferecem "java".

  Seleção    Comando
-----------------------------------------------
*+ 1           /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.45-36.b13.fc22.x86_64/jre/bin/java
   2           /usr/java/jdk1.7.0_79/bin/java
   3           /usr/java/default/jre/bin/java

Indique para manter a seleção atual[+] ou digite o número da seleção: 2

[root@localhost ~]# alternatives --config javac

Há 1 programa que oferece "javac".

  Seleção    Comando
-----------------------------------------------
*+ 1           /usr/java/default/bin/javac


[root@localhost ~]# alternatives --config javaws

Há 1 programa que oferece "javaws".

  Seleção    Comando
-----------------------------------------------
*+ 1           /usr/java/default/jre/bin/javaws

Indique para manter a seleção atual[+] ou digite o número da seleção: 1  

[root@localhost ~]# alternatives --config jar

Há 1 programa que oferece "jar".

  Seleção    Comando
-----------------------------------------------
*+ 1           /usr/java/default/bin/jar

Indique para manter a seleção atual[+] ou digite o número da seleção: 1

[root@localhost ~]# exit
logout

[gscofano@localhost new-project]$ java -version
java version "1.7.0_79"
Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)

[gscofano@localhost new-project]$ javac -version
javac 1.7.0_79


[gscofano@localhost new-project]$ pwd 
/home/gscofano/Documentos/Programacao/play/play-2.4.2


[gscofano@localhost new-project]$ ls
activator-1.3.5-minimal


[gscofano@localhost new-project]$ mkdir new-project


[gscofano@localhost new-project]$ cd ./new-project


[gscofano@localhost new-project]$ sbt about

[info] Set current project to new-project (in build file:/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/)
[info] This is sbt 0.13.1
[info] The current project is {file:/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/}new-project 0.1-SNAPSHOT
[info] The current project is built against Scala 2.10.4
[info] 
[info] sbt, sbt plugins, and build definitions are using Scala 2.10.4


[gscofano@localhost new-project]$ ../activator-1.3.5-minimal/activator new first-app play-java

OK, application "first-app" is being created using the "play-java" template.

To run "first-app" from the command line, "cd first-app" then:
/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/first-app/activator run

To run the test for "first-app" from the command line, "cd first-app" then:
/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/first-app/activator test

To run the Activator UI for "first-app" from the command line, "cd first-app" then:
/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/first-app/activator ui


[gscofano@localhost new-project]$ cd ./first-app


[gscofano@localhost first-app]$ ./activator
[info] Loading project definition from /home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/first-app/project
[info] Updating {file:/home/gscofano/Documentos/Programacao/play/play-2.4.2/new-project/first-app/project/}first-app-build...
[info] Resolving org.scala-sbt#precompiled-2_9_3;0.13.8 ...
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: org.scala-lang#scala-library;2.10.4: configuration not found in org.scala-lang#scala-library;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe#npm_2.10;1.1.1 compile
[warn]  :: org.scala-lang#scala-compiler;2.10.4: configuration not found in org.scala-lang#scala-compiler;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe.play#twirl-compiler_2.10;1.1.1 compile
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn] 
[warn]  Note: Unresolved dependencies path:
[warn]      org.scala-lang:scala-library:2.10.4 ((sbt.Classpaths) Defaults.scala#L1203)
[warn]        +- org.scala-sbt:control:0.13.8
[warn]        +- org.scala-sbt:io:0.13.8
[warn]        +- org.scala-sbt:classpath:0.13.8
[warn]        +- org.scala-sbt:incremental-compiler:0.13.8
[warn]        +- org.scala-sbt:persist:0.13.8
[warn]        +- org.scala-sbt:compiler-integration:0.13.8
[warn]        +- org.scala-sbt:actions:0.13.8
[warn]        +- org.scala-sbt:main:0.13.8
[warn]        +- org.scala-sbt:sbt:0.13.8
[warn]        +- default:first-app-build:0.1-SNAPSHOT (sbtVersion=0.13, scalaVersion=2.10)
[warn]      org.scala-lang:scala-compiler:2.10.4
[warn]        +- org.scala-sbt:classpath:0.13.8
[warn]        +- org.scala-sbt:incremental-compiler:0.13.8
[warn]        +- org.scala-sbt:persist:0.13.8
[warn]        +- org.scala-sbt:compiler-integration:0.13.8
[warn]        +- org.scala-sbt:actions:0.13.8
[warn]        +- org.scala-sbt:main:0.13.8
[warn]        +- org.scala-sbt:sbt:0.13.8
[warn]        +- default:first-app-build:0.1-SNAPSHOT (sbtVersion=0.13, scalaVersion=2.10)
sbt.ResolveException: unresolved dependency: org.scala-lang#scala-library;2.10.4: configuration not found in org.scala-lang#scala-library;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe#npm_2.10;1.1.1 compile
unresolved dependency: org.scala-lang#scala-compiler;2.10.4: configuration not found in org.scala-lang#scala-compiler;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe.play#twirl-compiler_2.10;1.1.1 compile
    at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:291)
    at sbt.IvyActions$$anonfun$updateEither$1.apply(IvyActions.scala:188)
    at sbt.IvyActions$$anonfun$updateEither$1.apply(IvyActions.scala:165)
    at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:155)
    at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:155)
    at sbt.IvySbt$$anonfun$withIvy$1.apply(Ivy.scala:132)
    at sbt.IvySbt.sbt$IvySbt$$action$1(Ivy.scala:57)
    at sbt.IvySbt$$anon$4.call(Ivy.scala:65)
    at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:93)
    at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:78)
    at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:97)
    at xsbt.boot.Using$.withResource(Using.scala:10)
    at xsbt.boot.Using$.apply(Using.scala:9)
    at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:58)
    at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:48)
    at xsbt.boot.Locks$.apply0(Locks.scala:31)
    at xsbt.boot.Locks$.apply(Locks.scala:28)
    at sbt.IvySbt.withDefaultLogger(Ivy.scala:65)
    at sbt.IvySbt.withIvy(Ivy.scala:127)
    at sbt.IvySbt.withIvy(Ivy.scala:124)
    at sbt.IvySbt$Module.withModule(Ivy.scala:155)
    at sbt.IvyActions$.updateEither(IvyActions.scala:165)
    at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1369)
    at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1365)
    at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$87.apply(Defaults.scala:1399)
    at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$87.apply(Defaults.scala:1397)
    at sbt.Tracked$$anonfun$lastOutput$1.apply(Tracked.scala:37)
    at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1402)
    at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1396)
    at sbt.Tracked$$anonfun$inputChanged$1.apply(Tracked.scala:60)
    at sbt.Classpaths$.cachedUpdate(Defaults.scala:1419)
    at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1348)
    at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1310)
    at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
    at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
    at sbt.std.Transform$$anon$4.work(System.scala:63)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226)
    at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
    at sbt.Execute.work(Execute.scala:235)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
    at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)
    at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
[error] (*:update) sbt.ResolveException: unresolved dependency: org.scala-lang#scala-library;2.10.4: configuration not found in org.scala-lang#scala-library;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe#npm_2.10;1.1.1 compile
[error] unresolved dependency: org.scala-lang#scala-compiler;2.10.4: configuration not found in org.scala-lang#scala-compiler;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from com.typesafe.play#twirl-compiler_2.10;1.1.1 compile
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?

这里是 build.sbt

name := """first-app"""

version := "1.0-SNAPSHOT"

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

scalaVersion := "2.11.6"

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

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

构建属性

#Activator-generated Properties
#Sat Aug 01 03:30:20 BRT 2015
template.uuid=4908845b-9453-410b-af0f-404c1440dff1
sbt.version=0.13.8

还有 plugins.sbt

// The Play plugin
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.4.2")

// Web plugins
addSbtPlugin("com.typesafe.sbt" % "sbt-coffeescript" % "1.0.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-less" % "1.0.6")
addSbtPlugin("com.typesafe.sbt" % "sbt-jshint" % "1.0.3")
addSbtPlugin("com.typesafe.sbt" % "sbt-rjs" % "1.0.7")
addSbtPlugin("com.typesafe.sbt" % "sbt-digest" % "1.1.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-mocha" % "1.1.0")

// Play enhancer - this automatically generates getters/setters for public fields
// and rewrites accessors of these fields to use the getters/setters. Remove this
// plugin if you prefer not to have this feature, or disable on a per project
// basis using disablePlugins(PlayEnhancer) in your build.sbt
addSbtPlugin("com.typesafe.sbt" % "sbt-play-enhancer" % "1.1.0")

// Play Ebean support, to enable, uncomment this line, and enable in your build.sbt using
// enablePlugins(SbtEbean). Note, uncommenting this line will automatically bring in
// Play enhancer, regardless of whether the line above is commented out or not.
// addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "1.0.0")

我试图用空行分隔最后一个文件中的行。没有任何变化。

我试图用谷歌搜索，但找不到类似的东西。如果有人可以帮助我解决这个问题，我将不胜感激。最后，我要感谢所有花时间阅读这个问题的读者。

编辑：我刚刚意识到我正在使用 /usr/default/jre/bin/javac。我在尝试 Java SDK 8 时将其修复为 /usr/jdk1.8.0_51/jre/bin/javac。

Answer 1

最后，我找到了解决方案。那是一个艰难的过程。

所以，问题在于一些依赖项，由于某种原因，sbt 无法自行下载。为了解决这个问题，我设置了一个 ivy 构建文件并使用 ant 下载它们，而不使用 play、sbt 或任何相关的东西。我将在帖子末尾发布更多详细信息。

我使用了激活器用户界面 (/play-2.4.2/activator-dist-1.3.5/activator ui)，它再次开始构建项目。它经历了有问题的一点，后来又失败了。更多无法下载的依赖项。我使用相同的方法下载它们。它适用于所有依赖项，但有一个依赖项是 com.typesafe.sbtrc#actor-client-2-10;0.3.1。 Ivy 在 maven 存储库中查找我使用 ant 下载的依赖项，最后一个位于 bintray 存储库中，至少默认情况下，ivy 不使用它。我在网络浏览器中访问了这个存储库 (http://dl.bintray.com/typesafe/ivy-releases/com.typesafe.sbtrc/)，下载了其中的模块并将其放入 ~/ivy/local/com.typesafe.sbtrc/。

我再次调用了激活器用户界面，它最终可以构建并运行我的项目。

再解释一下情况，对于那些在 actor-client-2-10 依赖中遇到这个问题的人，当激活器构建项目时，它会查看 maven 存储库和本地存储库，而不是 bintray 存储库！我所做的只是将在 bintray 中找到的模块复制到我的本地存储库。当激活器查看 ~/.ivy2/local 时，它找到了它想要的工件并将其安装在 ~/.ivy2/cache 中。

如果您为解决此问题采取了同样的措施，请记住创建一些目录，以便 bintray 存储库和本地存储库中的目录树相同。

好吧，正如承诺的那样，我将发布我用来下载有问题的依赖项的 ivy 构建文件。首先，我们必须下载并安装 ant。然后，我们转到任意目录并创建一个名为 build.xml 的文件。在终端中，cd 到这个目录并输入 ant。它将下载并安装 build.xml 中定义的依赖项。这个文件的内容应该是

<project name="localrepository" default="install" xmlns:ivy="antlib:org.apache.ivy.ant">
 <target name="install" description="--> install modules to localreporsitory">
  <ivy:install organisation="TYPE HERE ORGANISATION" module="TYPE HERE THE MODULE"
   revision="TYPE HERE THE REVISION" transitive="true" overwrite="true" 
   from="public" to="local" />
 </target>
</project>

当我第一次使用它时

让我们以第一个给我带来问题的依赖项为例。激活器报告依赖是 org.scala-lang#scala-library;2.10.4。由于它遵循模型组织#module;revision，我们安装此依赖项的 build.xml 文件将是

<project name="localrepository" default="install" xmlns:ivy="antlib:org.apache.ivy.ant">
 <target name="install" description="--> install modules to localreporsitory">
  <ivy:install organisation="org.scala-lang" module="scala-library"
   revision="2.10.4" transitive="true" overwrite="true" 
   from="public" to="local" />
 </target>
</project>

Answer 2

尝试使用Java 8。根据https://www.playframework.com/download你需要JDK8。

我在使用 Fedora 22 和玩游戏时也遇到了问题。我在某处读到 Fedora 中有一个错误。我无法修复它:(

Answer 3

我遇到了类似的问题。我删除了 .ivy 和 .maven 下所有名为“scala-lang*”的目录，然后重新运行 sbt compile。 sbt下载依赖后，一切顺利。

Answer 4

尝试删除缓存文件夹~/.ivy2/cache中的“org.scala-lang”