I am running keycloak from latest source code. When I am trying to run a spring boot application using this Keycloak i am getting following error:
2021-03-06 22:48:07.763 INFO 16931 --- [ restartedMain] eycloakSpringbootMicroserviceApplication : Starting KeycloakSpringbootMicroserviceApplication on manish with PID 16931 (/home/manish/Downloads/keycloak-springboot-microservice-master/target/classes started by manish in /home/manish/Downloads/keycloak-springboot-microservice-master)
2021-03-06 22:48:07.765 INFO 16931 --- [ restartedMain] eycloakSpringbootMicroserviceApplication : No active profile set, falling back to default profiles: default
2021-03-06 22:48:07.795 INFO 16931 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2021-03-06 22:48:07.795 INFO 16931 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2021-03-06 22:48:08.613 INFO 16931 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8000 (http)
2021-03-06 22:48:08.619 INFO 16931 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-03-06 22:48:08.619 INFO 16931 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.33]
2021-03-06 22:48:08.666 INFO 16931 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-03-06 22:48:08.666 INFO 16931 --- [ restartedMain] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 871 ms
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/home/manish/.m2/repository/org/springframework/spring-core/5.2.5.RELEASE/spring-core-5.2.5.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
2021-03-06 22:48:08.856 INFO 16931 --- [ restartedMain] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@652b46d, org.springframework.security.web.context.SecurityContextPersistenceFilter@130d5b36, org.springframework.security.web.header.HeaderWriterFilter@6ad0fc97, org.keycloak.adapters.springsecurity.filter.KeycloakPreAuthActionsFilter@4c999787, org.keycloak.adapters.springsecurity.filter.KeycloakAuthenticationProcessingFilter@119a8166, org.springframework.security.web.authentication.logout.LogoutFilter@1685ff5e, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@215e0854, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@2b5a9df2, org.keycloak.adapters.springsecurity.filter.KeycloakSecurityContextRequestFilter@31f052ce, org.keycloak.adapters.springsecurity.filter.KeycloakAuthenticatedActionsFilter@31d5ced8, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@36ec039e, org.springframework.security.web.session.SessionManagementFilter@372c7841, org.springframework.security.web.access.ExceptionTranslationFilter@3d40d543, org.springframework.security.web.access.intercept.FilterSecurityInterceptor@1e86a670]
2021-03-06 22:48:08.933 INFO 16931 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-03-06 22:48:09.051 INFO 16931 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2021-03-06 22:48:09.078 INFO 16931 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8000 (http) with context path ''
2021-03-06 22:48:09.081 INFO 16931 --- [ restartedMain] eycloakSpringbootMicroserviceApplication : Started KeycloakSpringbootMicroserviceApplication in 1.623 seconds (JVM running for 2.19)
2021-03-06 22:48:27.540 ERROR 16931 --- [nio-8000-exec-1] o.a.c.c.C.[Tomcat].[localhost] : Exception Processing /
java.lang.NoClassDefFoundError: java/security/acl/Group
at org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve.createPrincipalFactory(KeycloakAuthenticatorValve.java:96) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.createSessionTokenStore(AbstractKeycloakAuthenticatorValve.java:262) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.getTokenStore(AbstractKeycloakAuthenticatorValve.java:251) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve.getTokenStore(KeycloakAuthenticatorValve.java:106) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.checkKeycloakSession(AbstractKeycloakAuthenticatorValve.java:228) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:180) ~[spring-boot-container-bundle-9.0.2.jar:9.0.2]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.33.jar:9.0.33]
at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
Caused by: java.lang.ClassNotFoundException: java.security.acl.Group
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:606) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[na:na]
... 19 common frames omitted
2021-03-06 22:48:27.547 INFO 16931 --- [nio-8000-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2021-03-06 22:48:27.547 INFO 16931 --- [nio-8000-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2021-03-06 22:48:27.551 INFO 16931 --- [nio-8000-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 4 ms
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.dinuth</groupId>
<artifactId>keycloak-springboot-microservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>keycloak-springboot-microservice</name>
<description>Demo project for Spring Boot Keycloak Integration</description>
<properties>
<java.version>11</java.version>
<keycloak.version>9.0.2</keycloak.version>
</properties>
<dependencies>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-spring-boot-starter</artifactId>
<version>${keycloak.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.keycloak.bom</groupId>
<artifactId>keycloak-adapter-bom</artifactId>
<version>${keycloak.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Java
java --version
openjdk 11.0.9.1 2020-11-04 OpenJDK Runtime Environment (build 11.0.9.1+1-Ubuntu-0ubuntu1.18.04) OpenJDK 64-Bit Server VM (build 11.0.9.1+1-Ubuntu-0ubuntu1.18.04, mixed mode, sharing)
