9:38 a.m.
Hi,
I am trying to use keycloak to secure six web apps deployed in Tomcat 7. Is there a Java
version requirement for the keycloak client adaptor? We are running Tomcat 7 with Java 7.
The keycloak version is 2.1.0. The strange thing is that not every web app under the
tomcat 7 has this error ("org/keycloak/authorization/client/Configuration :
Unsupported major.minor version 52.0"). They are all compiled similarly and running
in the same Tomcat with JRE 7. Any ideas?
Jun 08, 2017 1:03:17 AM org.apache.catalina.startup.HostConfig deployDirectory 560 SEVERE:
Error deploying web application directory /var/lib/tomcat/webapps/nara 561
java.lang.UnsupportedClassVersionError: org/keycloak/authorization/client/Configuration :
Unsupported major.minor version 52.0 562 at java.lang.ClassLoader.defineClass1(Native
Method) 563 at java.lang.ClassLoader.defineClass(Unknown Source) 564 at
java.security.SecureClassLoader.defineClass(Unknown Source) 565 at
java.net.URLClassLoader.defineClass(Unknown Source) 566 at
java.net.URLClassLoader.access$100(Unknown Source) 567 at
java.net.URLClassLoader$1.run(Unknown Source) 568 at
java.net.URLClassLoader$1.run(Unknown Source) 569 at
java.security.AccessController.doPrivileged(Native Method) 570 at
java.net.URLClassLoader.findClass(Unknown Source) 571 at
java.lang.ClassLoader.loadClass(Unknown Source) 572 at
java.lang.ClassLoader.loadClass(Unknown Source) 573 at
org.keycloak.adapters.authorization.PolicyEnforcer.<init>(PolicyEnforcer.java:55) 574
at
org.keycloak.adapters.KeycloakDeploymentBuilder.internalBuild(KeycloakDeploymentBuilder.java
:118) 575 at
org.keycloak.adapters.KeycloakDeploymentBuilder.build(KeycloakDeploymentBuilder.java:127) 576
at
org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.keycloakInit(AbstractKeycloa
kAuthenticatorValve.java:133) 577 at
org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.lifecycleEvent(AbstractKeycl
oakAuthenticatorValve.java:75) 578 at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) 579
at
org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) 580
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) 581
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:165) 582 at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) 583 at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) 584 at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) 585 at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260) 586 at
org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002) 587
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) 588 at
java.util.concurrent.FutureTask.run(Unknown Source) 589 at
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 590 at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 591 at
java.lang.Thread.run(Unknown Source)