Java (Spring Boot) - IllegalStateException：无法加载缓存项

Question

我们有一个相当复杂的 Spring Boot 项目，它在开发期间在 Windows 上运行良好。但是，当我们在 Ubuntu 上运行该项目时，我们会遇到一个奇怪的异常

LOGBACK: No context given for c.q.l.core.rolling.SizeAndTimeBasedRollingPolicy@310623126
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.8.RELEASE)
2020-07-08 12:56:42.860  INFO 6 --- [           main] redacted.Application            : Starting Application v0.0.1-SNAPSHOT on c72273bf4d02 with PID 6 (/home/plugin/app.jar started by root in /home/plugin)
2020-07-08 12:56:42.867  INFO 6 --- [           main] redacted.Application            : The following profiles are active: default
2020-07-08 12:56:44.745  INFO 6 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-07-08 12:56:45.119  INFO 6 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 345ms. Found 13 JPA repository interfaces.
2020-07-08 12:56:46.089 ERROR 6 --- [           main] o.s.boot.SpringApplication               : Application run failed
java.lang.IllegalStateException: Unable to load cache item
        at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:79) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:134) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:319) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:572) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:419) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassEnhancer.createClass(ConfigurationClassEnhancer.java:137) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:109) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:423) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:257) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:291) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:131) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar!/:2.3.0.RELEASE]
        at redacted.Application.main(Application.java:61) [classes!/:0.0.1-SNAPSHOT]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) [redacted-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:109) [redacted-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [redacted-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [redacted-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: java.lang.ExceptionInInitializerError: null
        at java.lang.Class.forName0(Native Method) ~[na:1.8.0_111]
        at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_111]
        at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:571) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:363) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.proxy.Enhancer.generate(Enhancer.java:585) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:110) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:108) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_111]
        at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61) ~[spring-core-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
        ... 29 common frames omitted
Caused by: java.lang.IllegalArgumentException: null
        at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1307) ~[na:1.8.0_111]
        at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1195) ~[na:1.8.0_111]
        at java.util.concurrent.Executors.newFixedThreadPool(Executors.java:89) ~[na:1.8.0_111]
        at redacted.Config.<clinit>(Config.java:43) ~[classes!/:0.0.1-SNAPSHOT]
        ... 39 common frames omitted

在 Ubuntu 上，我们使用的是 OpenJDK 11。它可以在具有相同 JDK 的 Windows 上运行，但在 Ubuntu 上却不行。我们还尝试在一个新的 Windows Sandbox 实例中运行该项目，它运行良好。

Answer 1

该问题是由于尝试使用 0 个线程创建线程池引起的。我们有一个带有 1 线程的开发 VPS，我们有这样一行代码：

public static final Executor EXECUTOR = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors() - 1);

这导致了异常。事后看来，异常堆栈跟踪在底部给了我们一个明显的线索

at redacted.Config.<clinit>(Config.java:43)

它确实指出了发生故障的确切线路。

您绝对应该做的另一件事是使用 sudo apt-get update 命令更新 apt-cache 安装最新的 OpenJDK 版本。

Answer 2

我不确定，但我认为问题是由 spring-core 依赖引起的。能否尝试从 pom.xml 文件中删除 spring-core 依赖项并尝试再次运行它。