Sentinel 服务启动报错

Sentinel 服务启动报错

• 问题：运行java -jar sentinel-dashboard-1.8.2.jar命令启动sentinel 服务端报错；

2021-08-01 23:37:29 [main] ERROR o.s.boot.SpringApplication - Application run failed
java.lang.IllegalStateException: Cannot load configuration class: com.alibaba.csp.sentinel.dashboard.DashboardApplication
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:414)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:254)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:282)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:126)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:694)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:333)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265)
	at com.alibaba.csp.sentinel.dashboard.DashboardApplication.main(DashboardApplication.java:33)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: java.lang.ExceptionInInitializerError: null
	at org.springframework.context.annotation.ConfigurationClassEnhancer.newEnhancer(ConfigurationClassEnhancer.java:122)
	at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:110)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:403)
	... 20 common frames omitted
Caused by: org.springframework.cglib.core.CodeGenerationException: java.lang.reflect.InaccessibleObjectException-->Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @4228f493
	at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:464)
	at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:336)
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:93)
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91)
	at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
	at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116)
	at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291)
	at org.springframework.cglib.core.KeyFactory$Generator.create(KeyFactory.java:221)
	at org.springframework.cglib.core.KeyFactory.create(KeyFactory.java:174)
	at org.springframework.cglib.core.KeyFactory.create(KeyFactory.java:153)
	at org.springframework.cglib.proxy.Enhancer.(Enhancer.java:73)
	... 23 common frames omitted
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @4228f493
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
	at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
	at org.springframework.cglib.core.ReflectUtils$1.run(ReflectUtils.java:61)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
	at org.springframework.cglib.core.ReflectUtils.(ReflectUtils.java:52)
	at org.springframework.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:243)
	at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
	at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:329)
	... 35 common frames omitted

• 原因：jdk版本错误，打开jar包查看jdk版本；

• 解决：官网下载对应版本jdk，指定版本运行；

// 指定jdk版本
set Path=D:\sdk\jre1.8.0_152\bin
// 运行项目
java -jar sentinel-dashboard-1.8.2.jar