An internal exception occurred address themida ошибка

In Java programming, the reflection API lets you examine the internal properties of a running Java program and manipulate them. The name of all its members can be displayed by a Java class, for example.

The «an illegal reflective access operation has occurred» warning message is related to the unauthorized access to parts of the JDK made by tools and libraries using reflection API.

In this article, we are going to show you what «an illegal reflective access operation has occurred» means and how to fix it.

From JDK9, an implementation may provide static access, i.e. by compiled bytecode or may provide a way to invoke its run-time system with one or more packages of one or more of its modules open to code in all unnamed modules, i.e. to code on the classpath.

If the run-time system is invoked in this way, and if by doing so some invocations of the reflection APIs succeed where otherwise they would have failed.

In such cases, you’ve actually ended up making a reflective access which is «illegal» since in a pure modular world you were not meant to do such accesses.

In future releases of the JDK, this illegal access to reflective data will eventually be disabled. JDK 9, 10 and 11 permits it by default. Here is the warning message:

WARNING: An illegal reflective access operation has occurred

WARNING: Illegal reflective access by com.tangosol.internal.util.ObjectFormatter (file:/opt/javaclasses/coherence/coherence.jar) to field java.lang.ref.Reference.referent

WARNING: Please consider reporting this to the maintainers of com.tangosol.internal.util.ObjectFormatter

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

Permit illegal reflective access

Recent JDK versions still, by default, permits illegal access. Alternatively, in future releases, you can pass --illegal-access=permit to the script and it would opens every package in every explicit module to code in all unnamed modules, i.e., code on the class path, just as --permit-illegal-access does today.

The first illegal reflective-access operation causes a warning to be issued, as with --permit-illegal-access, but no warnings are issued after that point. This single warning will describe how to enable further warnings.

Avoid illegal reflective access

The «an illegal reflective access operation has occurred» is merely a warning message and only indicating there is reflective access to JDK internal class without doing anything about it. In the meantime, you can either

• You can specify the reflective access explicitly using java’s –add-opens parameter. The migration guide for JDK 11 provides more information.
• Use a compatible and certified version of your software. If the software is actively maintained, then the developers are now aware of the warning and a fix may come in the near future.

Comments

This exclusion strategy makes sure to skip serialization of any classes implementing the WebDriver interface.
Since this object is redundant when reporting command parameters and doesn’t pass serialization - we exclude it.
See google/gson#1540 for more details on the serialization problem. (edited)

Signed-off-by: Gil Eliyahu <gil.eliyahu@testproject.io>

Revert google#1218

Usage of sun.misc.Unsafe to change internal AccessibleObject.override field
to suppress JPMS warnings goes against the intentions of the JPMS and does not
work anymore in newer versions, see google#1540.
Therefore remove it and instead create a descriptive exception when making a
member accessible fails. If necessary users can also still use `java` command
line flags to open external modules.

…tor (#1902)

* Remove UnsafeReflectionAccessor

Revert #1218

Usage of sun.misc.Unsafe to change internal AccessibleObject.override field
to suppress JPMS warnings goes against the intentions of the JPMS and does not
work anymore in newer versions, see #1540.
Therefore remove it and instead create a descriptive exception when making a
member accessible fails. If necessary users can also still use `java` command
line flags to open external modules.

* Fix failing to serialize Collection or Map with inaccessible constructor

Also remove tests which rely on Java implementation details.

* Don't keep reference to access exception of ConstructorConstructor

This also avoids a confusing stack trace, since the previously caught
exception might have had a complete unrelated stack trace.

* Remove Maven toolchain requirement

* Address review feedback

* Add back test for Security Manager

…tor (google#1902)

* Remove UnsafeReflectionAccessor

Revert google#1218

Usage of sun.misc.Unsafe to change internal AccessibleObject.override field
to suppress JPMS warnings goes against the intentions of the JPMS and does not
work anymore in newer versions, see google#1540.
Therefore remove it and instead create a descriptive exception when making a
member accessible fails. If necessary users can also still use `java` command
line flags to open external modules.

* Fix failing to serialize Collection or Map with inaccessible constructor

Also remove tests which rely on Java implementation details.

* Don't keep reference to access exception of ConstructorConstructor

This also avoids a confusing stack trace, since the previously caught
exception might have had a complete unrelated stack trace.

* Remove Maven toolchain requirement

* Address review feedback

* Add back test for Security Manager

An illegal reflective access operation has occurred Spring Boot and affected your programming experience when installing and using AM, including Amster and ssoadm tools. As a result, your system launches the following invalid message that halts further code alteration: warning: an illegal reflective access operation has occurred Java 11.

Luckily, this profound debugging provides several debugging principles and explains why an illegal reflective access operation has occurred Maven, which is vital when applying the solutions.

So, you are at the right place if you want to learn how to clear your system from bugs and errors and complete the application without an illegal reflective access operation has occurred Intellij mistakes.

An illegal reflective access operation has occurred Eclipse and obliterates your programming experience while using or installing AM, including Amster and ssoadm tools. Henceforth, this is a typical Java bug with most versions, but research confirms it is most familiar with Java 10 and 11.

The Java version is essential when understanding the possible culprits and causes for an illegal reflective access operation has occurred PySpark. For instance, before Java 9, developers had a superpower using the Java Reflection API because they could access the non-public class members without limitation.

However, things changed drastically after Java 9 because the modular system tends to limit the Java Reflection API to a specific extent. Therefore, an illegal reflective access operation has occurred Spark error pops up while working with specific Java versions and commands.

In addition, this invalid code exception usually lies within the module system, and the strong encapsulation triggers a mistake. For instance, a migration in Java 9 may provide static access, which is compiled by bytecode, a tool that helps developers change specific values and properties.

As a result, an illegal reflective access operation has occurred Mockito when misspelling the strong encapsulation of the modules, which must be precise. Luckily, this debugging guide includes chapters that recreate the error and provide adequate debugging solutions using real-life examples and scripts.

– Installing and Using AM and Java Agent

As explained before, this error’s primary and possible cause is using and installing AM, including ssoadm and Amster tools. However, learning about this cause requires developers to discover the invalid script and exception snippets.

These warning messages indicate where the code fails, what is the exact weak element, and how developers can alter their code to debug the error. In addition, we will show you several product messages that are slightly different but still cover the same mistake.

The following example introduces the AM invalid code snippet:

Unfortunately, similar warning messages appear in DS and IDM. Readers should notice the slight difference and compare them to their documents.

– Installing and Using DM and IDM

Programmers usually experience identical errors when using or installing DM and IDM, but only with specific versions. Namely, the mistake will only affect DS 6.5.x and IDM 6.5.x versions because several properties confuse your system.

However, as you will soon see, although these are different programs and applications, the exceptions are similar because they discuss the same matter. Therefore, we suggest comparing the warning in your system to learn how to pinpoint the mistake and change the properties afterwards.

This example introduces the invalid DM script warnings:

As you will soon learn, these messages should not be challenging to repair.

– Calling Eval on Kotlin Script

Our final example before providing the finest solution calls eval on a Kotlin script, which is standard with complex projects. However, to keep it short and precise, we will not give the full syntax because we will focus on the specific code snippets that recreate this invalid instance. First, we will show you the plugins and then exemplify the imported main commands. They should be sufficient to understand where the code is broken.

The following example includes both plugins and imports:

Although we can list other invalid examples, it is time to discover solutions to help you clear your syntax without complications.

Fixing the Illegal Reflective Access Operation: Use a Target Module

The most sophisticated method of fixing this illegal caller exception at runtime is introducing the correct target and source modules to your script. However, developers must be aware this method will only succeed when we call from the modified module, modules with granted access, and the unnamed module.

In addition, another excellent way of adding opens to the target module requires a Java Agent in the instrument module. As explained earlier, the specific class has added a new redefined module since Java 9. Fortunately, developers can use this method to provide extra exports, opens, and reads that debug your program.

Learn how to apply this solution by looking at the following example:

This code first utilizes the target module to create the extra reads, exports and opens variables. Then, it invokes the redefined module method that allows the source module to be accessible to the target module. This should debug the code and allow you to complete your projects without any hassle.

– Repair the Module Declaration

The second advanced debugging method requires developers to repair the module declaration. Namely, programmers can open the package in the module info and change several settings. However, you must be a code author to complete this operation. In addition, this process consists of three modules that fix the invalid code snippets and warnings.

So, the first step is opening the package in the module info, as shown below:

Developers can be more cautious and avoid other complications by using the qualified opens that determine the module and its property. We suggest repeating the following code to debug the project:

Although only a single code difference exists, it provides an excellent alternative when safely opening the package in the module-info. Developers and programmers can unlock the entire module when migrating the existing code to the modular system.

You can discover the necessary command in the following example:

This example completes the second debugging principle that fixes the illegal reflective access without causing further complications. As you can tell, you should have no issues implementing these advanced methods in your document or application.

Conclusion

Programmers sometimes experience an illegal reflective access operation mistake in their programs when using or installing AM, including Amster and ssoadm tools. Luckily, this comprehensive guide introduced several debugging methods and explained the following points:

• This error can affect many programs and applications, although it is typical for AM
• The warnings launched by the system indicate the invalid location
• Developers can recreate the invalid message by using the same values
• The sophisticated debugging methods require adding some target modules

Although developers will likely experience this mistake again when compiling their projects, fixing it should no longer be an issue. So, remain calm the next time you face an illegal reflective access operation because this guide has all you need.

In Java programming, the reflection API lets you examine the internal properties of a running Java program and manipulate them. The name of all its members can be displayed by a Java class, for example.

The «an illegal reflective access operation has occurred» warning message is related to the unauthorized access to parts of the JDK made by tools and libraries using reflection API.

In this article, we are going to show you what «an illegal reflective access operation has occurred» means and how to fix it.

From JDK9, an implementation may provide static access, i.e. by compiled bytecode or may provide a way to invoke its run-time system with one or more packages of one or more of its modules open to code in all unnamed modules, i.e. to code on the classpath.

If the run-time system is invoked in this way, and if by doing so some invocations of the reflection APIs succeed where otherwise they would have failed.

In such cases, you’ve actually ended up making a reflective access which is «illegal» since in a pure modular world you were not meant to do such accesses.

In future releases of the JDK, this illegal access to reflective data will eventually be disabled. JDK 9, 10 and 11 permits it by default. Here is the warning message:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.tangosol.internal.util.ObjectFormatter (file:/opt/javaclasses/coherence/coherence.jar) to field java.lang.ref.Reference.referent
WARNING: Please consider reporting this to the maintainers of com.tangosol.internal.util.ObjectFormatter
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

Recent JDK versions still, by default, permits illegal access. Alternatively, in future releases, you can pass --illegal-access=permit to the script and it would opens every package in every explicit module to code in all unnamed modules, i.e., code on the class path, just as --permit-illegal-access does today.

The first illegal reflective-access operation causes a warning to be issued, as with --permit-illegal-access, but no warnings are issued after that point. This single warning will describe how to enable further warnings.

Avoid illegal reflective access

The «an illegal reflective access operation has occurred» is merely a warning message and only indicating there is reflective access to JDK internal class without doing anything about it. In the meantime, you can either

• You can specify the reflective access explicitly using java’s –add-opens parameter. The migration guide for JDK 11 provides more information.
• Use a compatible and certified version of your software. If the software is actively maintained, then the developers are now aware of the warning and a fix may come in the near future.

You’re probably here because you recently restarted Spring Boot and found something like this unappetizing stacktrace in your console:

java.lang.UnsupportedOperationException: Reflective setAccessible(true) disabled
at io.netty.util.internal.ReflectionUtil.trySetAccessible(ReflectionUtil.java:31)
at io.netty.util.internal.PlatformDependent0$4.run(PlatformDependent0.java:238)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:232)
at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:293)
at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
at io.netty.util.ConstantPool.<init>(ConstantPool.java:32)
at io.netty.channel.ChannelOption$1.<init>(ChannelOption.java:36)
at io.netty.channel.ChannelOption.<clinit>(ChannelOption.java:36)
at reactor.netty.tcp.TcpClient.<clinit>(TcpClient.java:677)
at reactor.netty.http.client.HttpClient.<clinit>(HttpClient.java:1388)
at org.springframework.http.client.reactive.ReactorClientHttpConnector.<init>(ReactorClientHttpConnector.java:56)
at org.springframework.web.reactive.function.client.DefaultWebClientBuilder.getOrInitConnector(DefaultWebClientBuilder.java:282)
at org.springframework.web.reactive.function.client.DefaultWebClientBuilder.build(DefaultWebClientBuilder.java:260)
at us.careydevelopment.web.registration.service.RegistrationUserService.<init>(RegistrationUserService.java:33)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:204)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:310)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:295)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at us.careydevelopment.web.registration.Registration.main(Registration.java:10)
03:27:38.120 [main] DEBUG i.n.util.internal.PlatformDependent0 - java.nio.Bits.unaligned: available, true
03:27:38.121 [main] DEBUG i.n.util.internal.PlatformDependent0 - jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable
java.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @2e2f720
at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361)
at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:591)
at java.base/java.lang.reflect.Method.invoke(Method.java:558)
at io.netty.util.internal.PlatformDependent0$6.run(PlatformDependent0.java:352)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:343)
at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:293)

And that stacktrace goes on.

Now you’re pulling your hair out wondering how to fix it.

So you went to your favorite search engine to look for ideas and that’s what led you here.

Well, I can’t guarantee you that what I’m about to tell you will fix it in your situation. But I can say that it worked for me.

Let me share what I discovered.

TL;DR: Upgrade to a Later Version of Spring Boot

Alas, sometimes the simplest solutions are the easiest to overlook.

And in my case it was the simplest solution that worked.

I just updated Spring Boot to a later version.

In my POM file, I previously had this:

    <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.8.RELEASE</version>
</parent>

That’s the 2.3.8.RELEASE version of the Spring Boot starter parent.

All I did was change that to this:

    <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.3</version>
</parent>

Upgraded to 2.5.3. 

After making that change, I restarted Spring Boot. Then the problem disappeared like a politician’s promises after election day.

If that doesn’t work for you, then that means you’re going to have to keep searching. Sorry.

More Info

So what the heck is going on here?

In my case, the problem appeared once I included the Spring WebFlux depdency:

 <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>

Without that, the problem didn’t show up.

And that makes sense because the underlying complaint comes from Netty.

If you’re unfamiliar with Netty (or Reactor Netty), it’s the default server used by WebFlux. It’s an asynchronous framework design to work with reactive programming.

So there’s another possible solution: you can eliminate WebFlux if you can live without it.

Yeah, that’s a big if.

And you shouldn’t have to go that route anyway. So I don’t view that as a viable fix.

Suppressing Fire

Some folks like to add VM arguments to suppress the exception stacktrace.

But that’s not really a solution. It’s just a way to eliminate a nuisance.

That’s ignoring a problem rather than dealing with it.

I tried it anyway. Just for kicks and giggles.

I added the following VM arguments:

--add-opens java.base/jdk.internal.misc=ALL-UNNAMED
-Dio.netty.tryReflectionSetAccessible=true
--add-opens java.base/java.lang=ALL-UNNAMED

And when I did that and restarted Spring Boot, I got this in the console instead of that stacktrace you see above:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by io.netty.util.internal.ReflectionUtil (file:/C:/Users/carey/.m2/repository/io/netty/netty-common/4.1.58.Final/netty-common-4.1.58.Final.jar) to constructor java.nio.DirectByteBuffer(long,int)
WARNING: Please consider reporting this to the maintainers of io.netty.util.internal.ReflectionUtil
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

That’s better. But Spring still complained.

Eventually, I opted for the upgrade solution I suggested above. It worked for me.

I hope it works for you as well.

Wrapping It Up

Sorry if this didn’t fix your problem.

If that’s the case, rest assured you will eventually slay this Goliath. Because you’re cool like that.

Have fun!

Photo by Erik Mclean from Pexels

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/D:/Android/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.2.0.RELEASE/e0e1b3c304f70ed19d7905975f6f990916ada219/spring-core-5.2.0.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils
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

java --illegal-access=deny

public static void disableWarning() {
try {
Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
Unsafe u = (Unsafe) theUnsafe.get(null);
Class cls = Class.forName("jdk.internal.module.IllegalAccessLogger");
Field logger = cls.getDeclaredField("logger");
u.putObjectVolatile(cls, u.staticFieldOffset(logger), null);
} catch (Exception e) {
// ignore
    }
}

public static void main(String[] args) {
disableWarning(); //Disable warning
SpringApplication.run(AppApplication.class, args);
}

Processing «Error: (11, 25) Java: Package JDK.Internal.misc does not exist»

Solution 1: Switch the JDK to 1.8 version

Add parameters when compiling
--add-exports java.base/jdk.internal.misc=ALL-UNNAMED
Add parameters when running
--add-opens java.base/jdk.internal.misc=ALL-UNNAMED