一、问题描述
1.1 问题描述
今天上午，不断有同事像我咨询，怎么android studio 突然无法编译了，并且提示下面的错误。
Unexpected lock protocol found in lock file. Expected 3, found 37.
1.2 分析错误日志
打开as的【Show Log in Exploer】查看具体的日志
用文本编辑器打开，如下所示
2019-04-29 11:08:59,021 [thread 135] INFO - .project.GradleProjectResolver - Gradle project resolve error
org.gradle.tooling.GradleConnectionException: Could not run build action using Gradle distribution 'http://devtools.bbkedu.com/gradle/gradle-4.3-all.zip'.
at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:55)
at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:29)
at org.gradle.tooling.internal.consumer.ResultHandlerAdapter.onFailure(ResultHandlerAdapter.java:41)
at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:57)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)
at org.gradle.tooling.internal.consumer.BlockingResultHandler.getResult(BlockingResultHandler.java:46)
at org.gradle.tooling.internal.consumer.DefaultBuildActionExecuter.run(DefaultBuildActionExecuter.java:65)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.doResolveProjectInfo(GradleProjectResolver.java:273)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.access$200(GradleProjectResolver.java:75)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:738)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:721)
at org.jetbrains.plugins.gradle.service.execution.GradleExecutionHelper.execute(GradleExecutionHelper.java:216)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:140)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:75)
at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.lambda$resolveProjectInfo$0(RemoteExternalSystemProjectResolverImpl.java:37)
at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:58)
at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:45)
at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:100)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:166)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:152)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:558)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$5.run(ExternalSystemUtil.java:663)
at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:727)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:164)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:582)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:532)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:87)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:151)
at com.intellij.openapi.progress.impl.CoreProgressManager$4.run(CoreProgressManager.java:403)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:314)
at java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Unexpected lock protocol found in lock file. Expected 3, found 37.
at org.gradle.cache.internal.filelock.LockStateAccess.readState(LockStateAccess.java:81)
at org.gradle.cache.internal.filelock.LockFileAccess.readLockState(LockFileAccess.java:92)
at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.lock(DefaultFileLockManager.java:304)
at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.<init>(DefaultFileLockManager.java:150)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:100)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:87)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:83)
at org.gradle.cache.internal.OnDemandFileAccess.readFile(OnDemandFileAccess.java:40)
at org.gradle.cache.internal.SimpleStateCache.get(SimpleStateCache.java:48)
at org.gradle.cache.internal.FileIntegrityViolationSuppressingPersistentStateCacheDecorator.get(FileIntegrityViolationSuppressingPersistentStateCacheDecorator.java:33)
at org.gradle.launcher.daemon.registry.PersistentDaemonRegistry.getAll(PersistentDaemonRegistry.java:69)
at org.gradle.launcher.daemon.client.DefaultDaemonConnector.connect(DefaultDaemonConnector.java:110)
at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:138)
at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:92)
at org.gradle.tooling.internal.provider.DaemonBuildActionExecuter.execute(DaemonBuildActionExecuter.java:60)
at org.gradle.tooling.internal.provider.DaemonBuildActionExecuter.execute(DaemonBuildActionExecuter.java:41)
at org.gradle.tooling.internal.provider.LoggingBridgingBuildActionExecuter.execute(LoggingBridgingBuildActionExecuter.java:60)
at org.gradle.tooling.internal.provider.LoggingBridgingBuildActionExecuter.execute(LoggingBridgingBuildActionExecuter.java:34)
at org.gradle.tooling.internal.provider.ProviderConnection.run(ProviderConnection.java:143)
at org.gradle.tooling.internal.provider.ProviderConnection.run(ProviderConnection.java:128)
at org.gradle.tooling.internal.provider.DefaultConnection.run(DefaultConnection.java:212)
at org.gradle.tooling.internal.consumer.connection.CancellableActionRunner.execute(CancellableActionRunner.java:62)
at org.gradle.tooling.internal.consumer.connection.CancellableActionRunner.run(CancellableActionRunner.java:51)
at org.gradle.tooling.internal.consumer.connection.AbstractConsumerConnection.run(AbstractConsumerConnection.java:63)
at org.gradle.tooling.internal.consumer.connection.ParameterValidatingConsumerConnection.run(ParameterValidatingConsumerConnection.java:54)
at org.gradle.tooling.internal.consumer.DefaultBuildActionExecuter$1.run(DefaultBuildActionExecuter.java:76)
at org.gradle.tooling.internal.consumer.connection.LazyConsumerActionExecutor.run(LazyConsumerActionExecutor.java:84)
at org.gradle.tooling.internal.consumer.connection.CancellableConsumerActionExecutor.run(CancellableConsumerActionExecutor.java:45)
at org.gradle.tooling.internal.consumer.connection.ProgressLoggingConsumerActionExecutor.run(ProgressLoggingConsumerActionExecutor.java:58)
at org.gradle.tooling.internal.consumer.connection.RethrowingErrorsConsumerActionExecutor.run(RethrowingErrorsConsumerActionExecutor.java:38)
at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:55)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
... 1 more
二、解决问题
2.1 排查是不是 gradle-4.3-all.zip下载不下来的原因
一开始看到错误
org.gradle.tooling.GradleConnectionException: Could not run build action using Gradle distribution 'http://devtools.bbkedu.com/gradle/gradle-4.3-all.zip'.
以为是http://devtools.bbkedu.com/gradle/gradle-4.3-all.zip 这个文件下载不下来，然后替换成 https://services.gradle.org/distributions/gradle-4.3-all.zip 但是下载完成之后还是不能编译。
#distributionUrl=http://devtools.bbkedu.com/gradle/gradle-4.3-all.zip
distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-all.zip
2019-04-29 11:27:36,948 [thread 155] INFO - .project.GradleProjectResolver - Gradle project resolve error
org.gradle.tooling.GradleConnectionException: Could not run build action using Gradle distribution 'https://services.gradle.org/distributions/gradle-4.3-all.zip'.
at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:55)
at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:29)
at org.gradle.tooling.internal.consumer.ResultHandlerAdapter.onFailure(ResultHandlerAdapter.java:41)
at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:57)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)
at org.gradle.tooling.internal.consumer.BlockingResultHandler.getResult(BlockingResultHandler.java:46)
at org.gradle.tooling.internal.consumer.DefaultBuildActionExecuter.run(DefaultBuildActionExecuter.java:65)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.doResolveProjectInfo(GradleProjectResolver.java:273)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.access$200(GradleProjectResolver.java:75)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:738)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:721)
at org.jetbrains.plugins.gradle.service.execution.GradleExecutionHelper.execute(GradleExecutionHelper.java:216)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:140)
at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:75)
at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.lambda$resolveProjectInfo$0(RemoteExternalSystemProjectResolverImpl.java:37)
at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:58)
at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:45)
at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:100)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:166)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:152)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:558)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$5.run(ExternalSystemUtil.java:663)
at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:727)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:164)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:582)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:532)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:87)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:151)
at com.intellij.openapi.progress.impl.CoreProgressManager$4.run(CoreProgressManager.java:403)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:314)
at java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Unexpected lock protocol found in lock file. Expected 3, found 37.
at org.gradle.cache.internal.filelock.LockStateAccess.readState(LockStateAccess.java:81)
at org.gradle.cache.internal.filelock.LockFileAccess.readLockState(LockFileAccess.java:92)
at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.lock(DefaultFileLockManager.java:304)
at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.<init>(DefaultFileLockManager.java:150)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:100)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:87)
at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:83)
at org.gradle.cache.internal.OnDemandFileAccess.readFile(OnDemandFileAccess.java:40)
at org.gradle.cache.internal.SimpleStateCache.get(SimpleStateCache.java:48)
at org.gradle.cache.internal.FileIntegrityViolationSuppressingPersistentStateCacheDecorator.get(FileIntegrityViolationSuppressingPersistentStateCacheDecorator.java:33)
at org.gradle.launcher.daemon.registry.PersistentDaemonRegistry.getAll(PersistentDaemonRegistry.java:69)
at org.gradle.launcher.daemon.client.DefaultDaemonConnector.connect(DefaultDaemonConnector.java:110)
at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:138)
at org.gradle.launcher.daemon.client.DaemonClient.execute(DaemonClient.java:92)
at org.gradle.tooling.internal.provider.DaemonBuildActionExecuter.execute(DaemonBuildActionExecuter.java:60)
at org.gradle.tooling.internal.provider.DaemonBuildActionExecuter.execute(DaemonBuildActionExecuter.java:41)
at org.gradle.tooling.internal.provider.LoggingBridgingBuildActionExecuter.execute(LoggingBridgingBuildActionExecuter.java:60)
at org.gradle.tooling.internal.provider.LoggingBridgingBuildActionExecuter.execute(LoggingBridgingBuildActionExecuter.java:34)
at org.gradle.tooling.internal.provider.ProviderConnection.run(ProviderConnection.java:143)
at org.gradle.tooling.internal.provider.ProviderConnection.run(ProviderConnection.java:128)
at org.gradle.tooling.internal.provider.DefaultConnection.run(DefaultConnection.java:212)
at org.gradle.tooling.internal.consumer.connection.CancellableActionRunner.execute(CancellableActionRunner.java:62)
at org.gradle.tooling.internal.consumer.connection.CancellableActionRunner.run(CancellableActionRunner.java:51)
at org.gradle.tooling.internal.consumer.connection.AbstractConsumerConnection.run(AbstractConsumerConnection.java:63)
at org.gradle.tooling.internal.consumer.connection.ParameterValidatingConsumerConnection.run(ParameterValidatingConsumerConnection.java:54)
at org.gradle.tooling.internal.consumer.DefaultBuildActionExecuter$1.run(DefaultBuildActionExecuter.java:76)
at org.gradle.tooling.internal.consumer.connection.LazyConsumerActionExecutor.run(LazyConsumerActionExecutor.java:84)
at org.gradle.tooling.internal.consumer.connection.CancellableConsumerActionExecutor.run(CancellableConsumerActionExecutor.java:45)
at org.gradle.tooling.internal.consumer.connection.ProgressLoggingConsumerActionExecutor.run(ProgressLoggingConsumerActionExecutor.java:58)
at org.gradle.tooling.internal.consumer.connection.RethrowingErrorsConsumerActionExecutor.run(RethrowingErrorsConsumerActionExecutor.java:38)
at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:55)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
... 1 more
2.2 试试删除 .gradle这个文件夹
一开始按照网上 https://blog.csdn.net/u011429167/article/details/71512276的思路删除 .gradle这个文件夹
删除 .gradle这个文件夹
然而删除了文件夹还是一样编译失败。
2.3 排查是不是.gradle文件夹被加密软件加密了
是在没办法，重新看看错误的日志文件，然后看到提示语
Caused by: java.lang.IllegalStateException: Unexpected lock protocol found in lock file. Expected 3, found 37.
想着是不是真的.gradle文件夹里面有文件被锁住了？？？
回想起来，公司在一个月之前，强行给每台电脑都安装了加密的软件，但是这个加密软件一直运行也没有问题，为什么今天会有问题呢？？ 如下所示
2.3.2 原因
原来是 系统管理部 的同事，在上午增加了一个仿真软件的授权加密，而这个仿真软件内部和android studio一样的。所以导致了所有的android studio都被加密了，因此编译失败。
2.3.3 解决问题
找到原因之后，让 系统管理部 的同事 将上午添加的 那个加密策略去掉了，然后已经加密过的文件，需要手动解密一下 。
把上面的.gradle文件夹解密之后，然后将加密客户端注销掉即可。
2.3.4 打开Android Studio，重新编译
重新打开Android Studio，重新编译，如下所示：
重新下 gradle-4.6-all.zip 和 maven库里面的aar文件
编译成功
三、总结
碰到这些从来没有遇到过的问题的时候，先分析android studio提供给你的日志，然后排查出所有的可能性。特别是一些类似网管加密软件之类的坑，得特别注意，不然可能怎么都查不出原因来。
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