idea 导入项目时出现如此错误 No enum constant org.jetbrains.jps.model.java.LanguageLevel.JDK_1_11

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本文详细介绍了在IntelliJ IDEA中遇到JDK版本不匹配导致的内部错误，包括错误的具体表现，如LanguageLevel.JDK_1_11和JDK_1_9未被识别，以及详细的解决步骤。通过检查和调整项目设置中的JDK版本和Model配置，可以有效解决此问题。

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Table of Contents

出现的错误

解决办法

出现的错误

Error:Internal error: (java.lang.IllegalArgumentException) No enum constant org.jetbrains.jps.model.java.LanguageLevel.JDK_1_11
java.lang.IllegalArgumentException: No enum constant org.jetbrains.jps.model.java.LanguageLevel.JDK_1_9
    at java.lang.Enum.valueOf(Enum.java:238)
    at org.jetbrains.jps.model.java.LanguageLevel.valueOf(LanguageLevel.java:21)
    at org.jetbrains.jps.model.serialization.java.JpsJavaModelSerializerExtension$JavaProjectExtensionSerializer.loadExtension(JpsJavaModelSerializerExtension.java:285)
    at org.jetbrains.jps.model.serialization.java.JpsJavaModelSerializerExtension$JavaProjectExtensionSerializer.loadExtension(JpsJavaModelSerializerExtension.java:268)
    at org.jetbrains.jps.model.serialization.JpsLoaderBase.loadComponents(JpsLoaderBase.java:59)
    at org.jetbrains.jps.model.serialization.JpsProjectLoader.a(JpsProjectLoader.java:119)
    at org.jetbrains.jps.model.serialization.JpsProjectLoader.loadProject(JpsProjectLoader.java:98)
    at org.jetbrains.jps.model.serialization.impl.JpsSerializationManagerImpl.loadModel(JpsSerializationManagerImpl.java:41)
    at org.jetbrains.jps.cmdline.JpsModelLoaderImpl.loadModel(JpsModelLoaderImpl.java:45)
    at org.jetbrains.jps.cmdline.BuildRunner.load(BuildRunner.java:71)
    at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:198)
    at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:113)
    at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler$1.run(BuildMain.java:133)
    at org.jetbrains.jps.service.impl.SharedThreadPoolImpl$1.run(SharedThreadPoolImpl.java:41)
    at java.util.concurrent.Executors$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:745)