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groovy警告:Ubuntu下发生了非法的反射访问操作

java-11 groovy ubuntu java

xpt · 技术社区 · 4 年前

问题与 Groovy - WARNING: An illegal reflective access operation has occurred 就这样

这是在Ubuntu21.10中
最重要的是(传球)的解决方案 --add-opens 对于JVM),我无法让它为我工作。

$ groovy -version
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/usr/share/groovy/lib/groovy-2.4.21.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Groovy Version: 2.4.21 JVM: 11.0.12 Vendor: Ubuntu OS: Linux

$ java -version
openjdk version "11.0.12" 2021-07-20
OpenJDK Runtime Environment (build 11.0.12+7-Ubuntu-0ubuntu3)
OpenJDK 64-Bit Server VM (build 11.0.12+7-Ubuntu-0ubuntu3, mixed mode, sharing)

$ java --add-opens java.base/java.lang=ALL-UNNAMED -version
openjdk version "11.0.12" 2021-07-20
OpenJDK Runtime Environment (build 11.0.12+7-Ubuntu-0ubuntu3)
OpenJDK 64-Bit Server VM (build 11.0.12+7-Ubuntu-0ubuntu3, mixed mode, sharing)

$ groovy --add-opens java.base/java.lang=ALL-UNNAMED -version
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/usr/share/groovy/lib/groovy-2.4.21.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Caught: java.io.FileNotFoundException: /export/home/me/--add-opens (/export/home/me/--add-opens)
java.io.FileNotFoundException: /export/home/me/--add-opens (/export/home/me/--add-opens)
        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)

$ apt-cache policy groovy
groovy:
  Installed: 2.4.21-1
  Candidate: 2.4.21-1
  Version table:
 *** 2.4.21-1 500
        500 http://archive.ubuntu.com/ubuntu impish/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu impish/universe i386 Packages
        100 /var/lib/dpkg/status


$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 21.10
Release:        21.10
Codename:       impish

我已经试着设定 JAVA_OPTS 也:

export JAVA_OPTS="--add-opens java.base/java.lang=ALL-UNNAMED"

$ groovy -version
Unrecognized option: --add-opens
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

如何摆脱这个警告信息?

1 回复 | 直到 4 年前

swpalmer 4 年前

从FileNotFound异常中可以清楚地看到,--add opens没有用作JVM标志。你试过设置JAVA_选项吗?就像这样:

export JAVA_OPTS="--add-opens java.base/java.lang=ALL-UNNAMED"
groovy --version

我没有和你一样的错误。实际上,我仍然收到反射访问警告,而不是关于 --add-opens 不被承认。即使 --illegal-access=permit 我仍然看到警告。古怪的我确信JAVA_OPTS值正在被使用,因为如果我将其设置为无效标志,它会抱怨。

你有JAVA_HOME定义吗?我注意到groovy也会选择这个值来选择JVM。

使用Java 17,我不会收到任何警告或错误。

-1

Abdul Momen 4 年前

export JAVA_OPTS="--add-opens java.base/java.lang=ALL-UNNAMED"
groovy --version