Dashboard can not start: java.lang.reflect.InaccessibleObjectException | 控制台本地启动不了 · Issue #2439 · alibaba/Sentinel

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为什么本地启动不了，它总是报反射错误，但是我jdk版本是对的

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 @3a82ac97

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 @3a82ac97

java.lang.IllegalStateException: Cannot load configuration class: com.alibaba.csp.sentinel.dashboard.DashboardApplication

jdk版本1.8

java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @3a82ac97

这个看起来是 JDK 9+ 的版本，可否提供下具体版本

--add-opens java.base/java.lang=ALL-UNNAMED
看看还报不报错。 StackOverflow上有相关的讨论 https://stackoverflow.com/questions/41265266/how-to-solve-inaccessibleobjectexception-unable-to-make-member-accessible-m
It do solve my Dashboard problem ! 👍
For More Detail below :
My JDK Version
openjdk version "17.0.1" 2021-10-19
OpenJDK Runtime Environment Temurin-17.0.1+12 (build 17.0.1+12)
OpenJDK 64-Bit Server VM Temurin-17.0.1+12 (build 17.0.1+12, mixed mode, sharing)
My command Line
 java -Dserver.port=9000  --add-opens java.base/java.lang=ALL-UNNAMED -jar sentinel-dashboard-1.8.2.jar
--add-opens java.base/java.lang=ALL-UNNAMED
看看还报不报错。 StackOverflow上有相关的讨论 https://stackoverflow.com/questions/41265266/how-to-solve-inaccessibleobjectexception-unable-to-make-member-accessible-m
It do solve my Dashboard problem ! 👍
For More Detail below :
My JDK Version
openjdk version "17.0.1" 2021-10-19
OpenJDK Runtime Environment Temurin-17.0.1+12 (build 17.0.1+12)
OpenJDK 64-Bit Server VM Temurin-17.0.1+12 (build 17.0.1+12, mixed mode, sharing)
My command Line
 java -Dserver.port=9000  --add-opens java.base/java.lang=ALL-UNNAMED -jar sentinel-dashboard-1.8.2.jar
❯ java -version
openjdk version "1.8.0_312"
OpenJDK Runtime Environment Corretto-8.312.07.1 (build 1.8.0_312-b07)
OpenJDK 64-Bit Server VM Corretto-8.312.07.1 (build 25.312-b07, mixed mode)
miozus ~
but switch JDK 17 -> 8 works for me
❯ java -jar "E:\Java\sentinel\sentinel-dashboard-1.8.0.jar" --server.port=8333
INFO: Sentinel log output type is: file
INFO: Sentinel log charset is: utf-8
INFO: Sentinel log base directory is: C:\Users\miozus\logs\csp\
INFO: Sentinel log name use pid is: false
...(success)