Written by java-style
on 2021-12-29

Unable to make protected final java.lang.Class java.lang...

토비의 스프링 3.1 실습 도중 문제

DaoFactory 생성 후 이를 스프링으로 사용하기 위해 필요한 jar파일들을 넣고 변환하는 과정중 exception이 발생했다.

이클립스 버전 : 2021-09

Java 버전 : 17

에러 내용

Exception in thread "main" java.lang.IllegalStateException: Cannot load configuration class: springbook.user.dao.DaoFactory at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:249) at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:163) at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:663) at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:602) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:407) at org.springframework.context.annotation.AnnotationConfigApplicationContext.(AnnotationConfigApplicationContext.java:65) at UserDaoTest.main(UserDaoTest.java:14) Caused by: java.lang.ExceptionInInitializerError at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:166) at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) at net.sf.cglib.proxy.Enhancer.(Enhancer.java:69) at org.springframework.context.annotation.ConfigurationClassEnhancer.newEnhancer(ConfigurationClassEnhancer.java:101) at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:89) at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:241) ... 6 more 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 @32eebfca at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) 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 net.sf.cglib.core.ReflectUtils$2.run(ReflectUtils.java:56) at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) at net.sf.cglib.core.ReflectUtils.(ReflectUtils.java:46) ... 17 more

해결 방법

구글링 결과

eclipse.ini 에 --add-opens=java.base/java.lang=ALL-UNNAMED 소스를 추가하면 된다고 했는데 여전히 같은 에러 발생해서 다른 방법으로 해결을 했다.

Window > Preference > Java > Install JREs 에서

현재 설치되어 있는 JRE 버전 > Edit

Default VM arguments 에 위의 소스를 추가 했더니 정상적으로 생성.

결과

from http://lhc9138.tistory.com/70 by ccl(A) rewrite - 2021-12-29 02:27:54

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