Generator-jhipster: An illegal reflective access operation

Created on 24 Aug 2019  ·  12Comments  ·  Source: jhipster/generator-jhipster
Overview of the issue

After a fresh install (without any entity or controler) of mononlythic application on jdk 11, i got error

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.xnio.nio.NioXnio$2 (file:/home/morgan/.m2/repository/org/jboss/xnio/xnio-nio/3.3.8.Final/xnio-nio-3.3.8.Final.jar) to constructor sun.nio.ch.EPollSelectorProvider()
WARNING: Please consider reporting this to the maintainers of org.xnio.nio.NioXnio$2
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
##### **JHipster Version(s)** 6.2 ##### **JHipster Version(s)** 
[email protected] /home/morgan/git/qualishop
└── [email protected]
##### **JHipster configuration, a `.yo-rc.json` file generated in the root folder**
.yo-rc.json file 
{
  "generator-jhipster": {
    "promptValues": {
      "packageName": "com.qualihub.shop",
      "nativeLanguage": "en"
    },
    "jhipsterVersion": "6.2.0",
    "applicationType": "monolith",
    "baseName": "qualiShop",
    "packageName": "com.qualihub.shop",
    "packageFolder": "com/qualihub/shop",
    "serverPort": "8080",
    "authenticationType": "session",
    "cacheProvider": "ehcache",
    "enableHibernateCache": true,
    "websocket": false,
    "databaseType": "sql",
    "devDatabaseType": "h2Disk",
    "prodDatabaseType": "mariadb",
    "searchEngine": false,
    "messageBroker": false,
    "serviceDiscoveryType": false,
    "buildTool": "maven",
    "enableSwaggerCodegen": false,
    "rememberMeKey": "YourJWTSecretKeyWasReplacedByThisMeaninglessTextByTheJHipsterInfoCommandForObviousSecurityReasons",
    "useSass": true,
    "clientPackageManager": "npm",
    "clientFramework": "angularX",
    "clientTheme": "flatly",
    "clientThemeVariant": "light",
    "testFrameworks": [],
    "jhiPrefix": "jhi",
    "entitySuffix": "",
    "dtoSuffix": "DTO",
    "otherModules": [],
    "enableTranslation": true,
    "nativeLanguage": "en",
    "languages": ["en", "fr"],
    "blueprints": []
  }
}

JDL for the Entity configuration(s) entityName.json files generated in the .jhipster directory


JDL entity definitions

Environment and Tools

openjdk version "11.0.4" 2019-07-16
OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)
OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, mixed mode, sharing)

git version 2.17.1

node: v8.11.3

npm: 5.6.0

yeoman: 3.1.0

yarn: 1.9.2

Docker version 18.06.0-ce, build 0ffa825

docker-compose version 1.18.0, build 8dd22a9

INFO! Congratulations, JHipster execution is complete!

Browsers and Operating System

Ubuntu 18.04 LTS

area java
Source
picture Nymerea

All 12 comments

Guessing it's related to https://issues.jboss.org/browse/UNDERTOW-1355 since JHipster uses Undertow and the stacktraces match.

ruddell picture ruddell on 24 Aug 2019
👍1

If I understand well, the issue say the problem is fixed since version 2.3.2.Final.
Maybe it is just a library update ?

Nymerea picture Nymerea on 24 Aug 2019

@Nymerea : Don't think it's resolved yet. I believe what you are referring to is the jboss-threads version. The fix for the problem is to update Undertow's XNIO library to some version which in turn has jboss-threads version 2.3.2.Final or higher. But this seems to have other problems....

The final comment points to a link (http://undertow.io/blog/2019/04/15/Undertow-3.html) that says they are going to dump XNIO in favor of Netty.

SudharakaP picture SudharakaP on 25 Aug 2019

Here is another issue when running JHipster under Java 12.

WARNING: An illegal reflective access operation has occurred

`WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/Users/mustapha/.m2/repository/org/springframework/spring-core/5.1.9.RELEASE/spring-core-5.1.9.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

maznag picture maznag on 4 Sep 2019

@maznag : >>This<< seems to be the thread relevant to your issue; could you post the full stack trace after passing --illegal-access=debug argument please? Then we might be able to get some more information on this. 😄

https://github.com/spring-projects/spring-framework/issues/20414

SudharakaP picture SudharakaP on 4 Sep 2019

@SudharakaP I try to run JHipster with this option -illegal-access=debug but it doesn't work:

./mvnw --illegal-access=debug
Unable to parse command line options: Unrecognized option: --illegal-access=debug
maznag picture maznag on 5 Sep 2019

@maznag : It needs to be passed in as a JVM argument; if you are running it through the maven wrapper try this ./mvnw spring-boot:run -Dspring-boot.run.jvmArguments="--illegal-access=debug"

SudharakaP picture SudharakaP on 5 Sep 2019

@SudharakaP thanks ! it works. here is the result:

For information, I activated Websocket option in my application.

WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/Users/mustapha/.m2/repository/org/springframework/spring-core/5.1.9.RELEASE/spring-core-5.1.9.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
    at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:525)
    at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:363)
    at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:110)
    at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:108)
    at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
    at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
    at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:134)
    at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:319)
    at org.springframework.cglib.reflect.FastClass$Generator.create(FastClass.java:65)
    at org.springframework.cglib.proxy.MethodProxy.helper(MethodProxy.java:135)
    at org.springframework.cglib.proxy.MethodProxy.init(MethodProxy.java:76)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:242)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
    at com.jhipster.config.WebsocketSecurityConfiguration$$EnhancerBySpringCGLIB$$ad387939.inboundChannelSecurity(<generated>)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:394)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:366)
    at com.jhipster.config.WebsocketSecurityConfiguration$$EnhancerBySpringCGLIB$$ad387939.inboundChannelSecurity(<generated>)
    at org.springframework.security.config.annotation.web.socket.AbstractSecurityWebSocketMessageBrokerConfigurer.configureClientInboundChannel(AbstractSecurityWebSocketMessageBrokerConfigurer.java:106)
    at org.springframework.web.socket.config.annotation.DelegatingWebSocketMessageBrokerConfiguration.configureClientInboundChannel(DelegatingWebSocketMessageBrokerConfiguration.java:73)
2019-09-05 18:07:08.411 DEBUG 4831 --- [  restartedMain] com.hipster.config.DatabaseConfiguration  : H2 database is available on port 18080
2019-09-05 18:07:13.934 DEBUG 4831 --- [  restartedMain] i.g.j.c.apidoc.SwaggerAutoConfiguration  : Starting Swagger
2019-09-05 18:07:13.944 DEBUG 4831 --- [  restartedMain] i.g.j.c.apidoc.SwaggerAutoConfiguration  : Started Swagger in 10 ms
WARNING: Illegal reflective access by org.xnio.nio.NioXnio$2 (file:/Users/mustapha/.m2/repository/org/jboss/xnio/xnio-nio/3.3.8.Final/xnio-nio-3.3.8.Final.jar) to constructor sun.nio.ch.KQueueSelectorProvider()
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:88)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:71)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:310)
    at org.xnio.nio.NioXnio.<init>(NioXnio.java:70)
    at org.xnio.nio.NioXnioProvider.<clinit>(NioXnioProvider.java:30)
    at java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:781)
    at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:723)
    at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1395)
    at org.xnio.Xnio.doGetInstance(Xnio.java:248)
    at org.xnio.Xnio.getInstance(Xnio.java:187)
    at io.undertow.Undertow.start(Undertow.java:118)
    at org.springframework.boot.web.embedded.undertow.UndertowServletWebServer.start(UndertowServletWebServer.java:142)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:297)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:743)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:390)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
    at com.jhipster.Jhipster.main(Jhipster.java:63)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
WARNING: Illegal reflective access by org.xnio.nio.NioXnio$ConstructorSelectorCreator (file:/Users/mustapha/.m2/repository/org/jboss/xnio/xnio-nio/3.3.8.Final/xnio-nio-3.3.8.Final.jar) to constructor sun.nio.ch.PollSelectorImpl(java.nio.channels.spi.SelectorProvider)
    at org.xnio.nio.NioXnio$ConstructorSelectorCreator.<init>(NioXnio.java:264)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:170)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:71)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:310)
    at org.xnio.nio.NioXnio.<init>(NioXnio.java:70)
    at org.xnio.nio.NioXnioProvider.<clinit>(NioXnioProvider.java:30)
    at java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:781)
    at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:723)
    at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1395)
    at org.xnio.Xnio.doGetInstance(Xnio.java:248)
    at org.xnio.Xnio.getInstance(Xnio.java:187)
    at io.undertow.Undertow.start(Undertow.java:118)
    at org.springframework.boot.web.embedded.undertow.UndertowServletWebServer.start(UndertowServletWebServer.java:142)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:297)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:743)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:390)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
    at com.jhipster.JhipsterApp.main(JhipsterApp.java:63)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
maznag picture maznag on 5 Sep 2019

Here is the warning when I generate new project without Websocket:

WARNING: Illegal reflective access by org.xnio.nio.NioXnio$2 (file:/Users/mustapha/.m2/repository/org/jboss/xnio/xnio-nio/3.3.8.Final/xnio-nio-3.3.8.Final.jar) to constructor sun.nio.ch.KQueueSelectorProvider()
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:88)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:71)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:310)
    at org.xnio.nio.NioXnio.<init>(NioXnio.java:70)
    at org.xnio.nio.NioXnioProvider.<clinit>(NioXnioProvider.java:30)
    at java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:781)
    at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:723)
    at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1395)
    at org.xnio.Xnio.doGetInstance(Xnio.java:248)
    at org.xnio.Xnio.getInstance(Xnio.java:187)
    at io.undertow.Undertow.start(Undertow.java:118)
    at org.springframework.boot.web.embedded.undertow.UndertowServletWebServer.start(UndertowServletWebServer.java:142)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:297)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:743)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:390)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
    at com.jhipster.JhipsterApp.main(JhipsterApp.java:63)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
WARNING: Illegal reflective access by org.xnio.nio.NioXnio$ConstructorSelectorCreator (file:/Users/mustapha/.m2/repository/org/jboss/xnio/xnio-nio/3.3.8.Final/xnio-nio-3.3.8.Final.jar) to constructor sun.nio.ch.PollSelectorImpl(java.nio.channels.spi.SelectorProvider)
    at org.xnio.nio.NioXnio$ConstructorSelectorCreator.<init>(NioXnio.java:264)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:170)
    at org.xnio.nio.NioXnio$2.run(NioXnio.java:71)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:310)
    at org.xnio.nio.NioXnio.<init>(NioXnio.java:70)
    at org.xnio.nio.NioXnioProvider.<clinit>(NioXnioProvider.java:30)
    at java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:781)
    at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:723)
    at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1395)
    at org.xnio.Xnio.doGetInstance(Xnio.java:248)
    at org.xnio.Xnio.getInstance(Xnio.java:187)
    at io.undertow.Undertow.start(Undertow.java:118)
    at org.springframework.boot.web.embedded.undertow.UndertowServletWebServer.start(UndertowServletWebServer.java:142)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:297)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:743)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:390)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
    at com.jhipster.JhipsterApp.main(JhipsterApp.java:63)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
2019-09-05 18:43:00.892  INFO 5800 --- [  restartedMain] com.jhipster.JhipsterApp                 : Started JhipsterApp in 19.338 seconds (JVM running for 19.858)
maznag picture maznag on 5 Sep 2019

@maznag : For your first stack trace; WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils... there's a discussion in the spring-framework repo; seems it's still open and under review;

https://github.com/spring-projects/spring-framework/issues/22814

All the stack traces afterwards corresponds to our previous discussion above; https://github.com/jhipster/generator-jhipster/issues/10271#issuecomment-524613951

@pascalgrimaud @PierreBesson : Correct me if I am wrong, but from my investigation there's nothing to do in our end for these reflective access errors. So maybe we can close this issue for now. 😄

SudharakaP picture SudharakaP on 5 Sep 2019
👍1

@SudharakaP thanks for these informations.

maznag picture maznag on 6 Sep 2019
👍1

right, let's wait and close this for now

pascalgrimaud picture pascalgrimaud on 9 Sep 2019
👍1
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