example-nacos启动时报错

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版本信息

• Jdk版本：17
• SpringBoot版本：3.1.4
• DynamicTp版本：1.1.7-3.x
• 配置中心版本：Nacos 2.3.1
• 分支：springboot3

问题描述

example-nacos启动时报错：
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 @3a52dba3
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[na:na]
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[na:na]
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) ~[na:na]
at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) ~[na:na]
at net.sf.cglib.core.ReflectUtils$1.run(ReflectUtils.java:61) ~[cglib-3.3.0.jar:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569) ~[na:na]
at net.sf.cglib.core.ReflectUtils.(ReflectUtils.java:52) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:243) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:332) ~[cglib-3.3.0.jar:na]
... 63 common frames omitted
然后自己搜了一下解决方案，给SpringApplication加了VM option：--add-opens java.base/java.lang=ALL-UNNAMED，再次启动报另一个错误：
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 61
at org.objectweb.asm.ClassReader.(ClassReader.java:195) ~[asm-7.1.jar:7.1]
at org.objectweb.asm.ClassReader.(ClassReader.java:176) ~[asm-7.1.jar:7.1]
at org.objectweb.asm.ClassReader.(ClassReader.java:162) ~[asm-7.1.jar:7.1]
at org.objectweb.asm.ClassReader.(ClassReader.java:283) ~[asm-7.1.jar:7.1]
at net.sf.cglib.core.DuplicatesPredicate.(DuplicatesPredicate.java:93) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.proxy.Enhancer.getMethods(Enhancer.java:557) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:575) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:332) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.proxy.Enhancer.generate(Enhancer.java:492) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54) ~[cglib-3.3.0.jar:na]
at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264) ~[na:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:na]
at net.sf.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.internal.LoadingCache.get(LoadingCache.java:34) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:294) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:480) ~[cglib-3.3.0.jar:na]
at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:324) ~[cglib-3.3.0.jar:na]
at org.dromara.dynamictp.common.plugin.DtpInterceptorProxyFactory.enhance(DtpInterceptorProxyFactory.java:52) ~[classes/:na]
at org.dromara.dynamictp.common.plugin.DtpInterceptor.plugin(DtpInterceptor.java:54) ~[classes/:na]
at org.dromara.dynamictp.common.plugin.DtpInterceptorRegistry.plugin(DtpInterceptorRegistry.java:94) ~[classes/:na]
at org.dromara.dynamictp.core.spring.DtpPostProcessor.registerAndReturnDtp(DtpPostProcessor.java:106) ~[classes/:na]
at org.dromara.dynamictp.core.spring.DtpPostProcessor.postProcessAfterInitialization(DtpPostProcessor.java:94) ~[classes/:na]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:434) ~[spring-beans-6.0.12.jar:6.0.12]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1773) ~[spring-beans-6.0.12.jar:6.0.12]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.12.jar:6.0.12]
... 42 common frames omitted

• 猜测可能原因：项目的CGLIB版本为3.3.0，太低了，确实可能与JDK 17存在兼容性问题，尤其是在处理更高版本的字节码方面。CGLIB使用ASM库来生成字节码，而ASM库需要更新以支持更高版本的Java类文件格式。当CGLIB使用一个过时的ASM版本时，它可能无法正确地解析或生成由JDK 17编译的类文件，因为这些类文件采用了Java 17特有的字节码版本（即版本61）。另外，切到分支master（对应spring-boot 2.7.x）就没有这个问题，可能更验证了这个猜想。