游戏应用程序的编译问题

Question

我在编译我的play框架应用程序时遇到了一些问题。有时，应用程序运行良好，但大多数情况下，这些问题都发生在sbt和激活器工具中。下面是用sbt编译我的应用程序的一个例子：

[info] Compiling 15 Scala sources and 1 Java source to C:\Server\trunk\target\scala-2.11\classes...
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:8: error: cannot find symbol
[error] public static final controllers.ReverseAssets Assets = new controllers.ReverseAssets();
[error]                                ^
[error]   symbol:   class ReverseAssets
[error]   location: package controllers
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:9: error: cannot find symbol
[error] public static final controllers.ReverseApplication Application = new controllers.ReverseApplication();
[error]                                ^
[error]   symbol:   class ReverseApplication
[error]   location: package controllers
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:12: error: package controllers.javascript does not exist
[error] public static final controllers.javascript.ReverseAssets Assets = new controllers.javascript.ReverseAssets();
[error]                                           ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:13: error: package controllers.javascript does not exist
[error] public static final controllers.javascript.ReverseApplication Application = new controllers.javascript.ReverseApplication();
[error]                                           ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:18: error: package controllers.ref does not exist
[error] public static final controllers.ref.ReverseAssets Assets = new controllers.ref.ReverseAssets();
[error]                                    ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:19: error: package controllers.ref does not exist
[error] public static final controllers.ref.ReverseApplication Application = new controllers.ref.ReverseApplication();
[error]                                    ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:8: error: cannot find symbol
[error] public static final controllers.ReverseAssets Assets = new controllers.ReverseAssets();
[error]                                                                       ^
[error]   symbol:   class ReverseAssets
[error]   location: package controllers
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:9: error: cannot find symbol
[error] public static final controllers.ReverseApplication Application = new controllers.ReverseApplication();
[error]                                                                                 ^
[error]   symbol:   class ReverseApplication
[error]   location: package controllers
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:12: error: package controllers.javascript does not exist
[error] public static final controllers.javascript.ReverseAssets Assets = new controllers.javascript.ReverseAssets();
[error]                                                                                             ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:13: error: package controllers.javascript does not exist
[error] public static final controllers.javascript.ReverseApplication Application = new controllers.javascript.ReverseApplication();
[error]                                                                                                       ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:18: error: package controllers.ref does not exist
[error] public static final controllers.ref.ReverseAssets Assets = new controllers.ref.ReverseAssets();
[error]                                                                               ^
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:19: error: package controllers.ref does not exist
[error] public static final controllers.ref.ReverseApplication Application = new controllers.ref.ReverseApplication();
[error]                                                                                         ^
[error] 12 errors
[error] (compile:compile) javac returned nonzero exit code
[error] Total time: 16 s, completed Oct 31, 2014 11:18:25 AM

其他时候，我会在sbt干净编译中得到这个错误：

[info] Compiling 15 Scala sources and 1 Java source to C:\Server\trunk\target\scala-2.11\classes...
[trace] Stack trace suppressed: run last compile:compile for the full output.
[error] (compile:compile) java.lang.NoClassDefFoundError: Lcontrollers/ReverseAssets;
[error] Total time: 45 s, completed Oct 31, 2014 11:45:49 AM

然后我将退出sbt，然后再次运行sbt干净编译，一切看起来都很好。我甚至会运行激活程序run，所有的编译都很好，但是没有一个路由被识别：

# Home page
GET     /               controllers.Application.index

GET     /login          controllers.Application.login

​

​

然后，我将获得用激活程序运行编译的错误：

[info] Compiling 15 Scala sources and 1 Java source to C:\Server\trunk\target\scala-2.11\classes...
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:13: error: cannot find symbol
[error] public static final controllers.javascript.ReverseApplication Application = new controllers.javascript.ReverseApplication()
[error]                                           ^
[error]   symbol:   class ReverseApplication
[error]   location: package controllers.javascript
[error] C:\Server\trunk\target\scala-2.11\src_managed\main\controllers\routes.java:13: error: cannot find symbol
[error] public static final controllers.javascript.ReverseApplication Application = new controllers.javascript.ReverseApplication()
[error]                                                                                                       ^
[error]   symbol:   class ReverseApplication
[error]   location: package controllers.javascript
[error] 2 errors
[error] (compile:compile) javac returned nonzero exit code
[error] application -

! @6k3l8fool - Internal server error, for (GET) [/] ->

play.PlayExceptions$CompilationException: Compilation error[error: cannot find symbol]
    at play.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:27) ~[na:na]
    at play.PlayExceptions$CompilationException$.apply(PlayExceptions.scala:27) ~[na:na]
    at scala.Option.map(Option.scala:145) ~[scala-library-2.11.1.jar:na]
    at play.PlayReloader$$anon$1$$anonfun$play$PlayReloader$$anon$$taskFailureHandler$1.apply(PlayReloader.scala:235) ~[na:na]
    at play.PlayReloader$$anon$1$$anonfun$play$PlayReloader$$anon$$taskFailureHandler$1.apply(PlayReloader.scala:230) ~[na:na]
[warn] play - No application found at invoker init

然后我运行激活器干净运行，得到一个完全不同的错误：

[info] Compiling 15 Scala sources and 1 Java source to C:\Server\trunk\target\scala-2.11\classes...
java.lang.IllegalArgumentException: requirement failed: Source file 'C:\Server\trunk\target\scala-2.11\classes\Routes$$anonfun$routes$1$$anonfun$applyOrElse$4.class' does not exist.
    at scala.Predef$.require(Predef.scala:233)
    at sbt.IO$.copyFile(IO.scala:580)
    at sbt.IO$.sbt$IO$$copyImpl(IO.scala:559)
    at sbt.IO$$anonfun$copy$1.apply(IO.scala:548)
    at sbt.IO$$anonfun$copy$1.apply(IO.scala:548)
    at scala.Function$$anonfun$tupled$1.apply(Function.scala:77)
    at scala.Function$$anonfun$tupled$1.apply(Function.scala:76)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    at sbt.IO$.copy(IO.scala:548)
    at play.PlayCommands$$anonfun$PostCompile$1.apply(PlayCommands.scala:162)
    at play.PlayCommands$$anonfun$PostCompile$1.apply(PlayCommands.scala:76)
    at scala.Function8$$anonfun$tupled$1.apply(Function8.scala:35)
    at scala.Function8$$anonfun$tupled$1.apply(Function8.scala:34)
    at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
    at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
    at sbt.std.Transform$$anon$4.work(System.scala:64)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
    at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
    at sbt.Execute.work(Execute.scala:244)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
    at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
    at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:744)
[error] (compile:compile) java.lang.IllegalArgumentException: requirement failed: Source file 'C:\Server\AuthWebManager\trunk\target\scala-2.11\classes\Routes$$anonfun$routes$1$$anonfun$applyOrElse$4.
class' does not exist.
[error] application -

! @6k3l90dc5 - Internal server error, for (GET) [/] ->

play.PlayExceptions$UnexpectedException: Unexpected exception[IllegalArgumentException: requirement failed: Source file 'C:\Server\AuthWebManager\trunk\target\scala-2.11\classes\Routes$$anonfun$routes
$1$$anonfun$applyOrElse$4.class' does not exist.]
    at play.PlayReloader$$anon$1$$anonfun$play$PlayReloader$$anon$$taskFailureHandler$1.apply(PlayReloader.scala:237) ~[na:na]
    at play.PlayReloader$$anon$1$$anonfun$play$PlayReloader$$anon$$taskFailureHandler$1.apply(PlayReloader.scala:230) ~[na:na]
    at scala.Option.map(Option.scala:145) ~[scala-library-2.11.1.jar:na]
    at play.PlayReloader$$anon$1.play$PlayReloader$$anon$$taskFailureHandler(PlayReloader.scala:230) ~[na:na]
    at play.PlayReloader$$anon$1$$anonfun$reload$2.apply(PlayReloader.scala:90) ~[na:na]
Caused by: java.lang.IllegalArgumentException: requirement failed: Source file 'C:\Server\trunk\target\scala-2.11\classes\Routes$$anonfun$routes$1$$anonfun$applyOrElse$4.class' does not
exist.
    at scala.Predef$.require(Predef.scala:233) ~[scala-library-2.11.1.jar:na]
    at sbt.IO$.copyFile(IO.scala:580) ~[na:na]
    at sbt.IO$.sbt$IO$$copyImpl(IO.scala:559) ~[na:na]
    at sbt.IO$$anonfun$copy$1.apply(IO.scala:548) ~[na:na]
    at sbt.IO$$anonfun$copy$1.apply(IO.scala:548) ~[na:na]
[warn] play - No application found at invoker init

我也收到了一些不同的错误，但为了简洁起见，我不会在这里写这些错误。我尝试过删除.sbt和.I 2/缓存文件夹的建议，但这并没有解决问题。

那么，我该如何做才能使我的play应用程序编译和运行，而不会出现看似不确定的错误呢？

Answer 1

我遇到了类似的问题。我用eclipse和激活剂。看起来问题就在于eclipse试图在游戏的同一个导演中构建应用程序。我从eclipse中禁用了“自动构建”设置，到目前为止，它运行良好。看一看这条线：

https://groups.google.com/forum/#!topic/play-framework/4RnbqEk-muM

Answer 2

我以前也遇到过类似的随机错误。我已经缩小了内存使用量，因为在我们用于预测试调试的远程开发服务器上，完全相同的代码会编译得很好，而且如果我关闭打开的应用程序以便为编译器保留足够的空闲内存来完成它的工作，它也会编译得很好并且没有随机错误。

Answer 3

删除“目标”文件夹并再次运行，这对我是有效的：)！

参考资料：https://groups.google.com/forum/#!topic/play-framework/915-PGT8Zgs