Keycloak java.lang.NoClassDefFoundError: java/security/acl/Group using Springboot

Question

所以我们正在构建一个带有 Keycloak 集成的 Springboot 后端。但是当运行 docker 集群服务的后端时，我们会收到以下错误：

2020-06-29 21:17:51.694 ERROR 1 --- [nio-3304-exec-1] o.a.c.c.C.[Tomcat].[localhost]           : Exception Processing /Suitless/latest/

java.lang.NoClassDefFoundError: java/security/acl/Group

    at org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve.createPrincipalFactory(KeycloakAuthenticatorValve.java:96) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.createSessionTokenStore(AbstractKeycloakAuthenticatorValve.java:262) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.getTokenStore(AbstractKeycloakAuthenticatorValve.java:251) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve.getTokenStore(KeycloakAuthenticatorValve.java:106) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.checkKeycloakSession(AbstractKeycloakAuthenticatorValve.java:228) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:180) ~[spring-boot-container-bundle-10.0.1.jar!/:10.0.1]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.36.jar!/:9.0.36]
    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-9.0.36.jar!/:9.0.36]
    at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]

Caused by: java.lang.ClassNotFoundException: java.security.acl.Group
    at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:435) ~[na:na]
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589) ~[na:na]
    at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151) ~[run.jar:na]
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[na:na]

    ... 19 common frames omitted

我用 JDK 8 和 JDK 11 试过了，因为下面的 post 暗示错误的 JDK 会导致问题：Whosebug post。它仍然给出这个错误。

以下是我们的 build.gradle 设置：

    ext {
        springBootVersion = '2.3.1.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

plugins {
    id 'org.springframework.boot' version '2.3.1.RELEASE'
    id 'io.spring.dependency-management' version '1.0.9.RELEASE'
    id 'java'
}

apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

version = '0.0.1-SNAPSHOT'

bootJar {
    version = '0.0.1-SNAPSHOT'
}

sourceCompatibility = '1.8'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-hateoas'
    implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
    implementation 'org.springframework.boot:spring-boot-starter-validation'

    implementation group: 'joda-time', name: 'joda-time', version: '2.3'
    implementation group: 'io.jsonwebtoken', name: 'jjwt', version: '0.9.1'
    implementation 'javax.xml.bind:jaxb-api:2.3.0'

    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-security'
    implementation group: 'org.keycloak', name: 'keycloak-spring-boot-starter', version: '10.0.1'

    testImplementation('org.springframework.boot:spring-boot-starter-test')
    annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
}

Answer 1

清理缓存./gradlew cleanBuildCache

确定您使用的 Java 版本。

sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8

将it/set改为11

Answer 2

感谢您的评论。导致我出现此错误的问题是我的 Dockerfile 始终提取最新的 JDK 版本。这不是版本 11 或 8，而是版本 14。所以我只是向其中添加了一个特定版本，以防止 Keycloak 损坏。

Answer 3

我在使用 java 8 版本时也遇到了同样的错误。切换到 java 11.

后能够解决它

Answer 4

即使使用 Java 11，我也遇到了同样的问题，我更改为关键时钟版本 15.0.2。这解决了问题。

Keycloak java.lang.NoClassDefFoundError: java/security/acl/Group using Springboot

Keycloak java.lang.NoClassDefFoundError: java/security/acl/Group using Springboot

java

java-8

spring-boot

keycloak

java-11