JEP 483: Ahead-of-Time Class Loading & Linking failing on a simple Gradle Spring Boot project

Sat May 10 10:39:22 UTC 2025

Hi Daniel,

The Spring team does not recommend generating the AOT cache using the app
tests.

See related documentation and guidance in
https://docs.spring.io/spring-framework/reference/7.0-SNAPSHOT/integration/aot-cache.html
and
https://docs.spring.io/spring-boot/reference/packaging/class-data-sharing.html#packaging.class-data-sharing.aot-cache
.

Best regards,
Sébastien

On Fri, May 9, 2025 at 4:14 PM Daniel Andres Pelaez Lopez <
estigma88 at gmail.com> wrote:

> Hi loi,
>
> Thanks for the input.
>
> Yes, I am aware that packaging the app as a JAR will work, I have tested
> that before for production code, however, that doesn't fit the use case I
> am looking for: Using the app tests to generate the AOT cache. If we
> require to package a JAR that executes the tests, that seems like overkill.
> My thinking is that the Java community is most likely using CI/CD to run
> tests and using Maven/Gradle for that purpose, so, having support for
> creating the AOT cache from tests and from those tools, will allow to the
> community to adopt this features faster.
>
> El jue, 8 may 2025 a las 21:58, <ioi.lam at oracle.com> escribió:
>
>> It looks like your classpath have some directories:
>>
>>
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/classes/java/test'
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/classes/java/main'
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/resources/main'
>>
>>
>> Please try to package these directories into a JAR file and use that in
>> your classpath.
>>
>>
>> Thanks
>>
>> - Ioi
>> On 5/7/25 12:57 PM, Daniel Andres Pelaez Lopez wrote:
>>
>> Hi everyone,
>>
>> We are testing JEP 483 on JDK 24 using the following dummy Gradle Spring
>> Boot project: https://github.com/estigma88/java-aot/tree/master. As we
>> want to generate the AOT cache from the tests, we added a custom Test task
>> to receive the AOT flags for the JVM as follows:
>>
>> tasks.withType<Test> {
>>    useJUnitPlatform()
>>
>>    project.findProperty("aot")?.let {
>>       val aotFlags = it.toString().split(",")
>>       jvmArgs(aotFlags)
>>     }
>> }
>>
>> And we are using the following commands to generate the AOT cache:
>>
>> ./gradlew :test
>> -Paot="-XX:AOTMode=record,-XX:AOTConfiguration=app.aotconf" -> This one
>> succeed
>>
>> ./gradlew :test
>> -Paot="-XX:AOTMode=create,-XX:AOTConfiguration=app.aotconf,-XX:AOTCache=app.aot"
>> -> This one fails
>>
>> The following are the logs for the create command:
>>
>> [1,328s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.http.client.ReactorResourceFactory
>> [1,579s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.test.context.transaction.TransactionalTestExecutionListener
>> [1,581s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener
>> [1,668s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.logging.log4j2.Log4J2LoggingSystem
>> [2,412s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.http.codec.multipart.DefaultPartHttpMessageReader
>> [2,575s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.autoconfigure.cache.InfinispanCacheConfiguration
>> [2,577s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.autoconfigure.cache.RedisCacheConfiguration
>> [2,799s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.jdbc.init.DataSourceScriptDatabaseInitializer
>> [3,029s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.core.ReactiveAdapterRegistry$ReactorAdapter
>> [3,109s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.http.client.JettyClientHttpRequestFactoryBuilder
>> [3,110s][warning][cds] Preload Warning: Verification failed for
>> org.springframework.boot.http.client.HttpComponentsClientHttpRequestFactoryBuilder
>> [3,180s][warning][cds] java.lang.ClassNotFoundException:
>> org.mockito.internal.creation.bytebuddy.inject.MockMethodDispatcher
>> [3,180s][warning][cds] Preload Warning: Cannot find
>> org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher
>> [3,196s][warning][cds] Preload Warning: Verification failed for
>> org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator
>> [3,197s][warning][cds] java.lang.NoClassDefFoundError:
>> org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher
>> [3,197s][warning][cds] Preload Warning: Cannot find
>> org/mockito/internal/creation/bytebuddy/MockMethodAdvice
>> [3,307s][warning][cds] java.lang.ClassNotFoundException:
>> net.bytebuddy.utility.Invoker$Dispatcher
>> [3,307s][warning][cds] Preload Warning: Cannot find
>> net/bytebuddy/utility/Invoker$Dispatcher
>> [3,906s][warning][cds,resolve] :
>> An error has occurred while processing class list file app.aotconf 9635:5.
>> [3,906s][warning][cds,resolve] @cp
>> org/mockito/internal/creation/bytebuddy/MockMethodAdvice 1 2 7 9 10 11 17
>> 22 26 28 29 33 36 40 44 48 258
>> class org/mockito/internal/creation/bytebuddy/MockMethodAdvice is not
>> (yet) loaded by one of the built-in loaders[3,906s][warning][cds,resolve]
>>   ^
>> [3,906s][warning][cds,resolve] Your classlist may be out of sync with the
>> JDK or the application.
>> An error has occurred while processing class list file app.aotconf
>> 11862:5.
>> [4,467s][warning][cds,resolve] :
>> class org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher
>> is not (yet) loaded by one of the built-in
>> loaders[4,467s][warning][cds,resolve] @cp
>> org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher 1 2 8
>> 14 20 25 27 38 59
>> [4,467s][warning][cds,resolve]     ^
>> [4,467s][warning][cds,resolve] Your classlist may be out of sync with the
>> JDK or the application.
>> [4,608s][warning][cds        ] Preload Warning: Verification failed for
>> org.springframework.web.servlet.view.freemarker.FreeMarkerView
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/classes/java/test'
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/classes/java/main'
>> [4,648s][error  ][cds        ] Error: non-empty directory
>> '/home/danielpelaez/Documents/Distribution/aot/java-aot/build/resources/main'
>> Hint: enable -Xlog:class+path=info to diagnose the failure
>> Error occurred during CDS dumping
>> Cannot have non-empty directory in paths
>>
>> Error logs seem related to the AOT feature and not Gradle, but you will
>> know better.
>>
>> Any help would be appreciated.
>>
>> --
>> Daniel
>> e. estigma88 at gmail.com
>>
>>
>
> --
> Daniel
> e. estigma88 at gmail.com
>

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