SpringBoot
version: 3.0.0-SNAPSHOT
environment: Oracle JDK17 Win10 Maven-3.8.4
problem: {@org.springframework.cglib.beans.BeanMap}
example:

public class BeanMapTest {
    public static void main(String[] args) {
        var livkBean = new LivkBean(1, "1");
        var beanMap = BeanMap.create(livkBean);
        System.out.println(beanMap);
    }
}

record LivkBean(int id, String msg) {

}

Exception:

Exception in thread "main" 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 @233c0b17
	at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:525)
	at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:363)
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:110)
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:108)
	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:134)
	at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:319)
	at org.springframework.cglib.beans.BeanMap$Generator.create(BeanMap.java:127)
	at org.springframework.cglib.beans.BeanMap.create(BeanMap.java:59)
	at com.livk.spring.beanmap.BeanMapTest.main(BeanMapTest.java:16)
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 @233c0b17
	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 org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:494)
	... 12 more

Process finished with exit code 1

JDK17 prohibits reflection of java.base package
Hope to fix it soon
problem.md

Support for CGLIB BeanMap utility on JDK 17 #27802

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