Question

运行./gradlew clean build时收到以下消息：

> Task :compileKotlin FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileKotlin'.
> Kotlin could not find the required JDK tools in the Java installation '/usr/lib/jvm/java-8-openjdk-amd64/jre' used by Gradle. Make sure Gradle is running on a JDK, not JRE.

我有JDK，JAVA_HOME设置正确，update-alternatives也是如此。

# java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.16.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)

# update-alternatives --config java
There are 3 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/default-java/bin/java               1100      auto mode
  1            /usr/lib/jvm/default-java/bin/java               1100      manual mode
  2            /usr/lib/jvm/java-8-openjdk-amd64/bin/java       1         manual mode
  3            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode

在这里启用了堆栈跟踪的gradle构建：

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':compileKotlin'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:110)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
        at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
        at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.run(EventFiringTaskExecuter.java:51)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:46)
        at org.gradle.execution.taskgraph.LocalTaskInfoExecutor.execute(LocalTaskInfoExecutor.java:42)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:277)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:262)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:135)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:130)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.execute(DefaultTaskPlanExecutor.java:200)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.executeWithWork(DefaultTaskPlanExecutor.java:191)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.run(DefaultTaskPlanExecutor.java:130)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:74)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.execute(DefaultTaskExecutionGraph.java:143)
        at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:40)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:40)
        at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:24)
        at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:46)
        at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:49)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:40)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:33)
        at org.gradle.initialization.DefaultGradleLauncher$ExecuteTasks.run(DefaultGradleLauncher.java:355)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.initialization.DefaultGradleLauncher.runTasks(DefaultGradleLauncher.java:219)
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)
        at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:124)
        at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:77)
        at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:74)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:154)
        at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:38)
        at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:96)
        at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:74)
        at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
        at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
        at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
        at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.run(RunAsBuildOperationBuildActionRunner.java:50)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:45)
        at org.gradle.tooling.internal.provider.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:51)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:47)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:44)
        at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:79)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:44)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
        at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:39)
        at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:25)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:80)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:53)
        at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:62)
        at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:34)
        at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:36)
        at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:25)
        at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43)
        at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29)
        at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:59)
        at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:31)
        at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:59)
        at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:44)
        at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:46)
        at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:30)
        at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
        at org.gradle.util.Swapper.swap(Swapper.java:38)
        at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:62)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:81)
        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122)
        at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
        at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:295)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: org.gradle.api.GradleException: Kotlin could not find the required JDK tools in the Java installation '/usr/lib/jvm/java-8-openjdk-amd64/jre' used by Gradle. Make sure Gradle is running on a JDK, not JRE.
        at org.jetbrains.kotlin.gradle.tasks.JarSearchingUtilKt.findToolsJar(jarSearchingUtil.kt:95)
        at org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile.execute(Tasks.kt:255)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
        at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
        at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:131)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:120)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:99)
        ... 111 more
Caused by: java.lang.ClassNotFoundException: com.sun.tools.javac.util.Context
        at org.jetbrains.kotlin.gradle.tasks.JarSearchingUtilKt.findToolsJar(jarSearchingUtil.kt:92)
        ... 124 more

因此，据我所知，由于配置的路径是到JDK，因此在搜索tools.jar下的/usr/lib/jvm/default-java/lib时失败了。

我的gradle.build-以防万一：

plugins {
    id 'org.jetbrains.kotlin.jvm' version '1.3.11'
}

ext {
    ktorVersion = "1.1.2"
}

group 'com.example'
version '1.0-SNAPSHOT'

repositories {
    jcenter()
    mavenCentral()
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
    implementation "io.ktor:ktor-server-netty:$ktorVersion"
    implementation "io.ktor:ktor-jackson:$ktorVersion"
    implementation "io.ktor:ktor-freemarker:$ktorVersion"
    implementation "io.ktor:ktor-auth:$ktorVersion"
    implementation "ch.qos.logback:logback-classic:1.2.3"
    implementation 'io.github.microutils:kotlin-logging:1.6.22'
    implementation 'org.koin:koin-ktor:2.0.0-beta-3'
    implementation 'org.litote.kmongo:kmongo-coroutine:3.10.0'
}

compileKotlin {
    kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
    kotlinOptions.jvmTarget = "1.8"
}

我真的很茫然，不胜感激。

如果需要更多信息，请告诉我，我会尽力提供。

Answer 1

android studio 也提供 jdk。如果你指定jdk如下，它会成功

export PATH=$PATH:/Applications/"Android Studio.app"/Contents/jre/jdk/Contents/Home/bin
export JAVA_HOME=/Applications/"Android Studio.app"/Contents/jre/jdk/Contents/Home

Answer 2

在 MacOS 更新到 Big Sur 之后，我遇到了与上面 Tom Aranda 相同的问题。经过进一步调查，我遇到了 this SO post，这让我找到了 this radar。我不喜欢按照 Tom 的回答删除 JRE，因此我已经使用其他帖子中的详细信息解决了我自己的安装问题.....

我之前对 JAVA_HOME 的声明是在 ~/.zshrc as

export JAVA_HOME=`/usr/libexec/java_home -v 1.8`

但 Big Sur 似乎也将默认 JRE 版本更新为 1.8。所以我的 JAVA_HOME 需要更精确的过滤。

% /usr/libexec/java_home -V
Matching Java Virtual Machines (2):
    1.8.251.08 (x86_64) "Oracle Corporation" - "Java" /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
    1.8.0_241 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home
/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home

我现在导出为

export JAVA_HOME=`/usr/libexec/java_home -v 1.8.0_241`

现在这并不理想，因为它会在我下次更新 JDK 时中断。

根据雷达和其他 SO 帖子中的详细信息，我还需要确保在再次导出之前未设置任何现有导出的 JAVA_HOME，因此我在 ~/.zshrc 中的新条目现在已成为

unset JAVA_HOME;export JAVA_HOME=`/usr/libexec/java_home -v 1.8.0_241`

终端重新启动后，我之前失败的 gradlew 命令现在可以像以前一样运行了。

对我来说，这感觉像是一个更好的解决方案，因为我没有删除任何库，而且我只从我自己的终端命令中影响了 java home。很遗憾我需要指定精确的版本，因为这会在将来的某个时候中断。

Answer 3

我在MacOS（Big Sur）中解决了类似的问题。就我而言，我正在运行一个React Native项目，并尝试构建到Android时遇到以下错误：

* What went wrong:
Execution failed for task ':bugsnag_react-native:compileDebugKotlin'.
> Kotlin could not find the required JDK tools in the Java installation '/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home' used by G
radle. Make sure Gradle is running on a JDK, not JRE.

我跟随this article在MacOS上卸载了JRE。稍作修改以使该过程可逆，请按以下步骤操作：

cd /Library/Internet\ Plug-Ins/
mv JavaAppletPlugin.plugin DELETED-JavaAppletPlugin.plugin
cd /Library/PreferencePanes/
mv JavaControlPanel.prefPane DELETED-JavaControlPanel.prefPane

收到Permission denied后，请在命令前使用sudo。

然后我清除了Gradle文件夹。我不知道这是否有必要，但是对我有用：

rm -rf ~/.gradle

最后，我重建了项目（react-native run-android），一切正常。

我不确定删除JRE是最好的解决方案，因为您可能需要JRE做其他事情，但是我没有注意到有任何不良影响。另外，似乎我已经安装了JDK，对于所有Mac用户来说可能并非如此。

由于在MacOS上Stack Overflow上没有解决该问题的好答案，因此我想将解决方案发布在这里。

Answer 4

根据提供的数据，确定java在环境路径中。但是，它不能确认JAVA_HOME是否设置为JDK目录。您确定JAVA_HOME未被设置为/usr/lib/jvm/java-8-openjdk-amd64/jre或/usr/lib/jvm/java-8-openjdk-amd64而不是/usr/lib/jvm/default-java吗？

因为，如果设置了JAVA_HOME，则gradlew将忽略PATH中的java二进制文件并执行$JAVA_HOME/bin/java，而System.getProperty("java.home")将在登录的value中可用此异常（请参见jarSearchingUtil.Kt）

否则，您可以尝试直接在 gradlew 文件中声明JAVA_HOME

Answer 5

D3

它设置为> Kotlin could not find the required JDK tools in the Java installation '/usr/lib/jvm/java-8-openjdk-amd64/jre' used by Gradle. Make sure Gradle is running on a JDK, not JRE.。

应将JAVA_HOME设置为/usr/lib/jvm/java-8-openjdk-amd64/jre

如果您的操作系统是Ubuntu，请通过/usr/lib/jvm/java-8-openjdk-amd64/让suer安装openjdk jdk

sudo apt-get install openjdk-8-jdk 将安装jre，而不是jdk

Answer 6

我通过删除某种版本的java解决了这个问题。

我有两种Java，如下图。 kinds of Java

但是我在执行 ./gradlew clean assembleRelease 时失败了，这提醒我可能是我使用的 JDK 的问题。 failure

然后，我发现2种java的主页内容各不相同。左边是我从 Oracle 下载的那个。

JAVA_HOME content diff

所以，我试图通过删除第一个 java 的家来修复它。（首先压缩文件夹以进行复制）。

它的工作！

Answer 7

在 BIG SUR 上，遇到此错误的人可能已经安装了自定义 Java。使用以下命令删除它

sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -fr /Library/PreferencesPanes/JavaControlPanel.prefPane
sudo rm -fr ~/Library/Application\ Support/Oracle/Java

在那之后取消设置您拥有的任何自定义 JAVA_HOME 并将其从您的 shell 中删除，它应该会重新开始工作。

Answer 8

我遇到了完全相同的问题。我通过安装const puppeteer = require('Puppeteer'); const fs = require('fs'); const downloader = require('Image-downloader'); Function GetlargestImagesFromSrcset(SrcSet) { const SplitedSrcs = srcset.split(','); const ImgSrc = SplitedSrcs[SplitedSrcs.length - 1].split(' ')[0]; return ImgSrc; } async function GetImageFromPage(Url) { const Browser = await puppeteer.Launch(); const page = await brwoser.newpage(); await page.goto(url); const ImageSrcSets = await page.evaluate(() => { const imgs = Array.from(document.querySelectorAll('Article img')); const srcSetAttribute = imgs.map(i => i.getAttribute('Srcset')); return srcSetAttribute; }) const imgUrls = ImageSrcSets.map(srcSet => GetlargestImagesFromSrcset(SrcSet)); await browser.Close(); return imgUrls; } async Function main() { // if (!fs.existSync('./result')) { fs.mkdirSync('./result'); } const images = await GetImageFromPage('') Console.log(images); Main(); ```解决了它。我的机器正在运行OpenJDK 8 JDK，所以这是我的安装命令

centos。

我从vscode docs中学到了两个不同的Java软件包，即Java Runtime Environment（JRE）和Java Development Kit（JDK）。 JRE用于运行Java程序，而JDK用于开发Java应用程序。我只安装了JRE，但没有安装JDK。安装JDK后，我的构建成功运行了

Answer 9

在 open jdk 8 中遇到这个问题，切换到 open jdk 11 为我解决了。

export JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64/"

Answer 10

它给了我错误 FAILURE：构建失败，出现异常。 * 出了什么问题：任务 ':app:compileDebugKotlin' 执行失败。 > Kotlin 在 Gradle 使用的 Java 安装“C:\Program Files\Java\jre1.8.0_281”中找不到所需的 JDK 工具。确保 Gradle 在 JDK 上运行，而不是 JRE

我通过下载并安装 Java SE Development Kit 8 解决了这个问题并在路径中创建安装文件夹后 C:\Program Files\Java\jdk1.8.0_281

Answer 11

如果您使用的是 Mac，诀窍是从 Oracle 安装 JDK，他们现在正在更改许可政策，因此显然它不再完全免费用于商业用途。也就是说，安装后，您会在 MAC 上找到 JDK：“/Library/Java/JavaVirtualMachines/jdk-10.jdk/Contents/Home” 如果您转到 gradle.properties，您可以插入以下行： “org.gradle.java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_301.jdk/Contents/Home” 进入文件。重启Android studio，选择Android设备，应该就可以了。有趣的是，如果您转到 Finder，并导航到该文件夹，然后将该文件夹拖到 textedit 或 vim 中的 gradle.properties 文件中，路径就会神奇地显示出来。我已经使用 Mac 超过 10 年了，直到在这次新的 Android Studio 尝试中才发现这一点。它对我有用。感谢 Stack Overflow 社区，它是任何应用程序开发人员工具包的重要组成部分。

Answer 12

就我而言，我的实验室有 windows 7、visual studio、android studio 和 flutter 环境。当我开始调试时，发生了同样的问题。

为了解决这个问题，

首先，通过 Visual Studio 上的扩展安装 Java 扩展包。

第二，遵循 Java 扩展包，在配置运行屏幕上需要 JDK 11。

三、下载安装JDK(java开发工具包)11

第四，安装时必须检查安装过程中设置的路径。也许，它没有自动设置路径。你必须检查制作路径。

如果设置和安装正确，它会自动出现在系统环境变量中作为 JAVA_HOME 名称。不是用户变量。

再次运行主飞镖。您可以正确看到模拟器

Answer 13

使用您的jdk版本将其添加到gradle.properties

org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_102

Kotlin在Java安装中找不到所需的JDK工具

13 个答案: