所以我用gradlew包装器--gradle-version = 5.1.1 --distribution-type = bin命令更新了gradle,并且还将项目上的Java jdk从8更改为11,但是gradle不想构建我得到原因:无效的类型代码:CD和此异常:
java.lang.AbstractMethodError: Receiver class org.jetbrains.plugins.gradle.tooling.util.ModuleComponentIdentifierImpl does not define or inherit an implementation of the resolved method abstract getModuleIdentifier()Lorg/gradle/api/artifacts/ModuleIdentifier; of interface org.gradle.api.artifacts.component.ModuleComponentIdentifier.
at org.gradle.api.internal.artifacts.ivyservice.resolutionstrategy.DefaultCachePolicy.mustRefreshModule(DefaultCachePolicy.java:205)
at org.gradle.api.internal.artifacts.ivyservice.resolutionstrategy.DefaultCachePolicy.mustRefreshModule(DefaultCachePolicy.java:192)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$LocateInCacheRepositoryAccess.resolveComponentMetaDataFromCache(CachingModuleComponentRepository.java:212)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$LocateInCacheRepositoryAccess.resolveComponentMetaData(CachingModuleComponentRepository.java:185)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.lambda$resolveComponentMetaData$3(ErrorHandlingModuleComponentRepository.java:159)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.lambda$tryResolveAndMaybeBlacklist$15(ErrorHandlingModuleComponentRepository.java:228)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.tryResolveAndMaybeBlacklist(ErrorHandlingModuleComponentRepository.java:242)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.tryResolveAndMaybeBlacklist(ErrorHandlingModuleComponentRepository.java:227)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.performOperationWithRetries(ErrorHandlingModuleComponentRepository.java:220)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveComponentMetaData(ErrorHandlingModuleComponentRepository.java:158)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.process(ComponentMetaDataResolveState.java:69)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.resolve(ComponentMetaDataResolveState.java:48)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:138)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:119)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolveModule(RepositoryChainComponentMetaDataResolver.java:92)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolve(RepositoryChainComponentMetaDataResolver.java:63)
at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.buildComponentResult(DefaultArtifactResolutionQuery.java:166)
at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.createResult(DefaultArtifactResolutionQuery.java:144)
at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.execute(DefaultArtifactResolutionQuery.java:135)
at org.jetbrains.plugins.gradle.tooling.util.DependencyResolverImpl.resolveDependencies(DependencyResolverImpl.java:207)
at org.jetbrains.plugins.gradle.tooling.util.DependencyResolverImpl.resolveDependencies(DependencyResolverImpl.java:307)
at org.jetbrains.plugins.gradle.tooling.util.DependencyResolver$resolveDependencies.call(Unknown Source)
at org.jetbrains.plugins.gradle.tooling.builder.ExternalProjectBuilderImpl$_getSourceSets_closure6.doCall(ExternalProjectBuilderImpl.groovy:419)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:104)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:326)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:264)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1041)
at groovy.lang.Closure.call(Closure.java:411)
at groovy.lang.Closure.call(Closure.java:427)
at org.gradle.util.ClosureBackedAction.execute(ClosureBackedAction.java:70)
at org.gradle.util.ConfigureUtil.configureTarget(ConfigureUtil.java:154)
at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:105)
at org.gradle.util.ConfigureUtil$WrappedConfigureAction.execute(ConfigureUtil.java:166)
at org.gradle.api.internal.DefaultDomainObjectCollection.all(DefaultDomainObjectCollection.java:158)
at org.gradle.api.internal.DefaultDomainObjectCollection.all(DefaultDomainObjectCollection.java:192)
at org.gradle.api.DomainObjectCollection$all.call(Unknown Source)
at org.jetbrains.plugins.gradle.tooling.builder.ExternalProjectBuilderImpl.getSourceSets(ExternalProjectBuilderImpl.groovy:239)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:104)
at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite$StaticMetaMethodSiteNoUnwrapNoCoerce.invoke(StaticMetaMethodSite.java:151)
at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:102)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:232)
at org.jetbrains.plugins.gradle.tooling.builder.ExternalProjectBuilderImpl.doBuild(ExternalProjectBuilderImpl.groovy:104)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:104)
at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite$StaticMetaMethodSiteNoUnwrapNoCoerce.invoke(StaticMetaMethodSite.java:151)
at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:102)
at org.jetbrains.plugins.gradle.tooling.builder.ExternalProjectBuilderImpl.buildAll(ExternalProjectBuilderImpl.groovy:63)
at org.jetbrains.plugins.gradle.tooling.internal.ExtraModelBuilder.buildAll(ExtraModelBuilder.java:67)
at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingToolingModelBuilder$1$1.create(DefaultToolingModelBuilderRegistry.java:102)
at org.gradle.api.internal.project.DefaultProjectStateRegistry.withLenientState(DefaultProjectStateRegistry.java:132)
at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingToolingModelBuilder$1.call(DefaultToolingModelBuilderRegistry.java:98)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$BuildOperationWrappingToolingModelBuilder.buildAll(DefaultToolingModelBuilderRegistry.java:95)
at org.gradle.tooling.internal.provider.runner.DefaultBuildController.getModel(DefaultBuildController.java:79)
at org.gradle.tooling.internal.consumer.connection.InternalBuildActionAdapter$2.getModel(InternalBuildActionAdapter.java:77)
at org.gradle.tooling.internal.consumer.connection.BuildControllerAdapter.getModel(BuildControllerAdapter.java:62)
at org.gradle.tooling.internal.consumer.connection.AbstractBuildController.findModel(AbstractBuildController.java:57)
at org.gradle.tooling.internal.consumer.connection.AbstractBuildController.findModel(AbstractBuildController.java:44)
at org.jetbrains.plugins.gradle.model.ProjectImportAction.addExtraProject(ProjectImportAction.java:134)
at org.jetbrains.plugins.gradle.model.ProjectImportAction.execute(ProjectImportAction.java:76)
at org.jetbrains.plugins.gradle.model.ProjectImportAction.execute(ProjectImportAction.java:40)
at org.gradle.tooling.internal.consumer.connection.InternalBuildActionAdapter.execute(InternalBuildActionAdapter.java:80)
at org.gradle.tooling.internal.provider.runner.ClientProvidedBuildActionRunner$ResultBuildingListener.buildResult(ClientProvidedBuildActionRunner.java:114)
at org.gradle.tooling.internal.provider.runner.ClientProvidedBuildActionRunner$ResultBuildingListener.buildFinished(ClientProvidedBuildActionRunner.java:106)
at jdk.internal.reflect.GeneratedMethodAccessor53.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:376)
at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:358)
at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:58)
at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:346)
at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:333)
at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:42)
at org.gradle.internal.event.BroadcastDispatch$SingletonDispatch.dispatch(BroadcastDispatch.java:230)
at org.gradle.internal.event.BroadcastDispatch$SingletonDispatch.dispatch(BroadcastDispatch.java:149)
at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:58)
at org.gradle.internal.event.BroadcastDispatch$CompositeDispatch.dispatch(BroadcastDispatch.java:324)
at org.gradle.internal.event.BroadcastDispatch$CompositeDispatch.dispatch(BroadcastDispatch.java:234)
at org.gradle.internal.event.ListenerBroadcast.dispatch(ListenerBroadcast.java:140)
at org.gradle.internal.event.ListenerBroadcast.dispatch(ListenerBroadcast.java:37)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
at com.sun.proxy.$Proxy13.buildFinished(Unknown Source)
at org.gradle.initialization.DefaultGradleLauncher.finishBuild(DefaultGradleLauncher.java:179)
at org.gradle.initialization.DefaultGradleLauncher.finishBuild(DefaultGradleLauncher.java:141)
at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:83)
at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:75)
at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:183)
at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:40)
at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:75)
at org.gradle.internal.invocation.GradleBuildController.configure(GradleBuildController.java:64)
at org.gradle.tooling.internal.provider.runner.ClientProvidedBuildActionRunner.run(ClientProvidedBuildActionRunner.java:57)
at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
at org.gradle.launcher.exec.BuildOutcomeReportingBuildActionRunner.run(BuildOutcomeReportingBuildActionRunner.java:58)
at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
at org.gradle.launcher.exec.BuildCompletionNotifyingBuildActionRunner.run(BuildCompletionNotifyingBuildActionRunner.java:39)
at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:49)
at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:44)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:44)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:49)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:46)
at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:78)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:46)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:31)
at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:42)
at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:28)
at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:52)
at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:59)
at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:36)
at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:68)
at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:38)
at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:37)
at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:26)
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:60)
at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:32)
at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:55)
at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:41)
at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:48)
at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:32)
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:104)
at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
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:104)
at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
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:104)
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:104)
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$1.run(ManagedExecutorImpl.java:46)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.base/java.lang.Thread.run(Thread.java:834)
每当我创建一个新项目并编写gradlew --version时,它都会在更新后恢复到gradlew的旧版本
--version
Gradle 5.1.1
------------------------------------------------------------
Build time: 2019-01-10 23:05:02 UTC
Revision: 3c9abb645fb83932c44e8610642393ad62116807
Kotlin DSL: 1.1.1
Kotlin: 1.3.11
Groovy: 2.5.4
Ant: Apache Ant(TM) version 1.9.13 compiled on July 10 2018
JVM: 10 ("Oracle Corporation" 10+46)
OS: Windows 10 10.0 amd64
有什么解决方法吗?
答案 0 :(得分:3)
从堆栈跟踪来看,这是Gradle和Intellij Idea之间的集成问题。因此,将Idea至少更新到2018.3应该会有所帮助。
Gradle中有一个东西叫做工具API。 Idea用来维护对共享项目模型的理解并运行Gradle任务。 Gradle 5.0更改了API,因此也需要更新IDE。
虽然仅更新Gradle Idea插件可能就足够了,但这在很大程度上取决于是否已移植回Idea插件中的修复程序。