I was trying to implement Redis caching for SpringBoot app which exposes Rest API. Important code snippets and maven build file enclosed.
Start-up annotations:
@SpringBootApplication@EnableAsync@EnableScheduling@EnableCachingpublic class Application {pom.xml(Only relevant dependencies listed) :
<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.1.RELEASE</version><relativePath/></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>com.h2database</groupId><artifactId>h2</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.10</version><scope>provided</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.assertj</groupId><artifactId>assertj-core</artifactId><version>3.9.1</version><scope>test</scope></dependency></dependencies>Running from IntelliJ IDE environment.
- Project SDK : Java 11
- Project Language Level : 11
At project start-up I am encountering below exception but start-up completes successfully. What is the root cause of the exception and how I can solve it?
java.lang.UnsupportedOperationException: Reflective setAccessible(true) disabled at io.netty.util.internal.ReflectionUtil.trySetAccessible(ReflectionUtil.java:31) at io.netty.util.internal.PlatformDependent0$4.run(PlatformDependent0.java:233) at java.base/java.security.AccessController.doPrivileged(Native Method) at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:227) at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:289) at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:109) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:218) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:197) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:179) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:163) at io.lettuce.core.resource.DefaultClientResources.<init>(DefaultClientResources.java:167) at io.lettuce.core.resource.DefaultClientResources$Builder.build(DefaultClientResources.java:530) at io.lettuce.core.resource.DefaultClientResources.create(DefaultClientResources.java:231) at org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration.lettuceClientResources(LettuceConnectionConfiguration.java:66) 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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:893) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) at com.iyzico.challenge.Application.main(Application.java:18)2020-09-24 12:25:24.039 DEBUG 56915 --- [ main] i.n.util.internal.PlatformDependent0 : java.nio.Bits.unaligned: available, true2020-09-24 12:25:24.040 DEBUG 56915 --- [ main] i.n.util.internal.PlatformDependent0 : jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailablejava.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @21ba2445 at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361) at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:591) at java.base/java.lang.reflect.Method.invoke(Method.java:558) at io.netty.util.internal.PlatformDependent0$6.run(PlatformDependent0.java:347) at java.base/java.security.AccessController.doPrivileged(Native Method) at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:338) at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:289) at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:109) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:218) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:197) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:179) at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:163) at io.lettuce.core.resource.DefaultClientResources.<init>(DefaultClientResources.java:167) at io.lettuce.core.resource.DefaultClientResources$Builder.build(DefaultClientResources.java:530) at io.lettuce.core.resource.DefaultClientResources.create(DefaultClientResources.java:231) at org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration.lettuceClientResources(LettuceConnectionConfiguration.java:66) 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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:893) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) at com.iyzico.challenge.Application.main(Application.java:18)Thanks in advance