我不完全理解這個呢,然而在首選項,語言&框架> Scalac服務器也有一些設置,可以幫助:
- 關閉服務器,如果是閒置<號碼>分鐘。
- 利用項目作爲家庭服務器編譯工作目錄
- JVM SDK用於實例編譯服務器...(編譯服務器將在一個新的項目的每個編譯重新啓動)(當JVM SDK和模塊SDK匹配)。
IntelliJ窗口右下方有一個小圖標,指示編譯服務器是否正在運行並可用於停止和啓動它。
如果服務器空閒,服務器將關閉。通常應該在需要時啓動,但如果JVM SDK與模塊SDK不匹配,則可能不會發生這種情況。增加空閒超時應該有助於減少問題發生的頻率。將JVM SDK與Module SDK相匹配應該可以解決這個問題,但如果您有多個使用不同SDK的項目,則可能無法解決問題。
如果您經常在項目之間切換,將項目主頁用作編譯器服務器工作目錄可能會有所幫助。
編輯
我用的IntelliJ IDEA終極2016年3月2日,但乾淨關閉的常用方法,並重新啓動沒有工作再有這樣的問題。我編寫了關於編譯服務器如何工作的一些信息,在我看來,IntelliJ正在尋找編譯服務器的錯誤端口。如果我手動強制make,那麼我可以看到一個編譯服務器正在運行,但它不是IntelliJ正在尋找的那個。我仍然沒有解決方案,但這些信息可能會讓我們更接近一個。
查找文件
的第一步是制定出其中的IntelliJ存儲它的配置和日誌文件。此信息目前公佈在這裏:IntelliJ Directories
我的Mac上,這意味着:
- 配置文件:〜/庫/首選項/ IntelliJIdea2016.3 /選項
- 日誌文件:〜/圖書館/日誌/ IntelliJIdea2016.3
編譯服務器
編譯服務器是一個很長的命令行Java進程,像這樣結束:
org.jetbrains.jps.cmdline.BuildMain <host> <port> <compile-server-id> <compile-server-cache-directory>
選項都存儲在配置〜/庫/首選項/ IntelliJIdea2016.3 /選項/ scala.xml
有些在首選項 - >語言&框架 - > Scala編譯器服務器對話框中配置,但可以通過編輯文件添加其他設置。目前礦看起來像這樣:
<application>
<component name="ScalaSettings">
<option name="COMPILE_SERVER_PORT" value="59184" />
<option name="COMPILE_SERVER_ID" value="93f4589e-4707-4e20-a05a-01869045e067" />
<option name="COMPILE_SERVER_SDK" value="1.8" />
<option name="COMPILE_SERVER_MAXIMUM_HEAP_SIZE" value="2048" />
</component>
</application>
我手工添加的COMPILER_SERVER_PORT選項,但這個版本的IntelliJ的,它使用單彙編編譯服務器有不同的端口和ID。不幸的是,如果我更改COMPILER_SERVER_PORT並重新啓動IntelliJ,則此過程使用不同的端口,因此我認爲這些是兩個單獨的實例。
我用這個命令來查找編譯服務器過程中,經過手動啓動編譯:
ps -ef | grep nailgun
此命令查找的IntelliJ使用的端口:
lsof -i | grep idea
還有一個日誌文件這裏:
~/Library/Logs/IntelliJIdea2016.3/idea.log
這表明某事不太對勁:
2016-12-28 10:19:46,745 [ 50710] INFO - j.compiler.server.BuildManager - BUILDER_PROCESS [stdout]: Build process started. Classpath: /Users/richard/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/163.10154.41/IntelliJ IDEA.app/Contents/lib/jps-launcher.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home/lib/tools.jar:/Users/richard/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/163.10154.41/IntelliJ IDEA.app/Contents/lib/optimizedFileManager.jar
2016-12-28 10:59:43,958 [2447923] INFO - ij.compiler.impl.CompileDriver - COMPILATION STARTED (BUILD PROCESS)
2016-12-28 10:59:43,960 [2447925] INFO - j.compiler.server.BuildManager - Using preloaded build process to compile /Users/richard/workspace-scala
2016-12-28 10:59:44,181 [2448146] ERROR - .impl.MessageBusConnectionImpl - java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at com.intellij.openapi.application.impl.LaterInvocator.invokeAndWait(LaterInvocator.java:189)
at com.intellij.openapi.application.impl.ApplicationImpl.invokeAndWait(ApplicationImpl.java:662)
at com.intellij.openapi.application.impl.ApplicationImpl.invokeAndWait(ApplicationImpl.java:667)
at org.jetbrains.plugins.scala.extensions.package$$anonfun$invokeAndWait$1.apply$mcV$sp(package.scala:567)
at org.jetbrains.plugins.scala.extensions.package$.preservingControlFlow(package.scala:577)
at org.jetbrains.plugins.scala.extensions.package$.invokeAndWait(package.scala:566)
at org.jetbrains.plugins.scala.compiler.ServerMediator$$anon$1.buildStarted(ServerMediator.scala:42)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.util.messages.impl.MessageBusConnectionImpl.deliverMessage(MessageBusConnectionImpl.java:117)
at com.intellij.util.messages.impl.MessageBusImpl.doPumpMessages(MessageBusImpl.java:381)
at com.intellij.util.messages.impl.MessageBusImpl.pumpMessages(MessageBusImpl.java:368)
at com.intellij.util.messages.impl.MessageBusImpl.sendMessage(MessageBusImpl.java:347)
at com.intellij.util.messages.impl.MessageBusImpl.access$200(MessageBusImpl.java:42)
at com.intellij.util.messages.impl.MessageBusImpl$2.invoke(MessageBusImpl.java:230)
at com.sun.proxy.$Proxy117.buildStarted(Unknown Source)
at com.intellij.compiler.server.BuildManager$NotifyingMessageHandler.buildStarted(BuildManager.java:1435)
at com.intellij.compiler.server.DelegatingMessageHandler.buildStarted(DelegatingMessageHandler.java:18)
at com.intellij.compiler.server.DelegatingMessageHandler.buildStarted(DelegatingMessageHandler.java:18)
at com.intellij.compiler.server.BuildMessageDispatcher.sendBuildParameters(BuildMessageDispatcher.java:115)
at com.intellij.compiler.server.BuildManager.a(BuildManager.java:724)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:210)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.jetbrains.plugins.scala.compiler.CompileServerLauncher$$anonfun$15.apply(CompileServerLauncher.scala:282)
at org.jetbrains.plugins.scala.compiler.CompileServerLauncher$$anonfun$15.apply(CompileServerLauncher.scala:282)
at scala.collection.TraversableLike$$anonfun$filterImpl$1.apply(TraversableLike.scala:259)
at scala.collection.immutable.Set$Set3.foreach(Set.scala:145)
at scala.collection.TraversableLike$class.filterImpl(TraversableLike.scala:258)
at scala.collection.TraversableLike$class.filter(TraversableLike.scala:270)
at scala.collection.AbstractTraversable.filter(Traversable.scala:104)
at org.jetbrains.plugins.scala.compiler.CompileServerLauncher$.org$jetbrains$plugins$scala$compiler$CompileServerLauncher$$jdkChangeRequired(CompileServerLauncher.scala:282)
at org.jetbrains.plugins.scala.compiler.CompileServerLauncher.start(CompileServerLauncher.scala:56)
at org.jetbrains.plugins.scala.compiler.CompileServerLauncher.tryToStart(CompileServerLauncher.scala:41)
at org.jetbrains.plugins.scala.compiler.ServerMediator$$anon$1$$anonfun$buildStarted$2.apply$mcV$sp(ServerMediator.scala:43)
at org.jetbrains.plugins.scala.extensions.package$$anonfun$invokeAndWait$1$$anon$16.run(package.scala:569)
at com.intellij.openapi.application.TransactionGuardImpl$6.run(TransactionGuardImpl.java:318)
at com.intellij.openapi.application.impl.LaterInvocator$1.run(LaterInvocator.java:166)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:417)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:401)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:843)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:679)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:391)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - IntelliJ IDEA 2016.3.2 Build #IU-163.10154.41
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - JDK: 1.8.0_112-release
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - VM: OpenJDK 64-Bit Server VM
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - Vendor: JetBrains s.r.o
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - OS: Mac OS X
2016-12-28 10:59:44,183 [2448148] ERROR - .impl.MessageBusConnectionImpl - Last Action: CompileDirty
2016-12-28 10:59:48,828 [2452793] INFO - lij.compiler.impl.CompilerUtil - COMPILATION FINISHED (BUILD PROCESS); Errors: 0; warnings: 1 took 4878 ms: 0 min 4sec
CompileServerLauncher.scala表示這是事做不能夠找到一個JDK 8使用,但如果它不能找到一個看起來像它應該有一個錯誤信息,而不是一個NullPointerException異常失敗。
也發生在Linux中。 –
我在Windows 7上也遇到過這個問題。升級到Windows 8.1(現在是10)之後,它消失了(到目前爲止)。 –
也發生在OSX上。 – richj