Spring boot and Keycloak

问题

I'm using this example: https://github.com/foo4u/keycloak-spring-demo

I have keycloak.json file in my WEB-INF folder, but when I run my application, I get this exception:

java.lang.RuntimeException: Must set 'realm' in config

Full stack of this exception:

java.lang.RuntimeException: Must set 'realm' in config
    at org.keycloak.adapters.KeycloakDeploymentBuilder.internalBuild(KeycloakDeploymentBuilder.java:53) ~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.KeycloakDeploymentBuilder.build(KeycloakDeploymentBuilder.java:152) ~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver.resolve(KeycloakSpringBootConfigResolver.java:37) ~[keycloak-spring-boot-adapter-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.AdapterDeploymentContext.resolveDeployment(AdapterDeploymentContext.java:88) ~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.PreAuthActionsHandler.preflightCors(PreAuthActionsHandler.java:107) ~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.PreAuthActionsHandler.handleRequest(PreAuthActionsHandler.java:79) ~[keycloak-adapter-core-2.4.0.Final.jar:2.4.0.Final]
    at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:183) ~[keycloak-tomcat-core-adapter-2.4.0.Final.jar:2.4.0.Final]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.5.jar:8.5.5]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]

This code is just an example of integration between Spring boot and Keycloak.

Can you please tell me what am I doing wrong?

Thanks for your answer and time.

回答1:

Even though that's a good and valid example, that dates from 2015. I believe it uses Keycloak 1.2.0 which is completely outdated. There are a set of examples with Spring here. Most of them up to date with the latest changes.

I suggest taking a look at these examples and read the docs as well.

回答2:

If you are using keycloak adapter with spring boot 2 or spring boot 1.5, you have to mentioned below properties in application.properties or application.yaml file

keycloak.auth-server-url=http://localhost:8180/auth
keycloak.realm=abc
keycloak.resource=movie-app
keycloak.public-client=false
keycloak.principal-attribute=preferred_username

If it still gives the error, please post the error, i will share the code :)

来源：https://stackoverflow.com/questions/41056124/spring-boot-and-keycloak