我看到很多关于此的主题，但似乎所有主题都使用相同的 URL 访问 KEYCLOAK。解释。我尝试建立一个由 KC 架构保护的前端+微服务。
看图：
如果每个人都可以使用相同的 url 看到 keycloak (kc)，那么一切都会正常工作，即对于 JS：
const keycloakURL = "http://test-kc-keycloak:8080/auth";
const keycloakParams = {
url: keycloakURL,
realm: "Test",
clientId: "IHM"
};
const keycloak = Keycloak(keycloakParams);
...
对于服务（project-default.yml）：
thorntail:
keycloak:
secure-deployments:
kc.war:
auth-server-url: "http://test-kc-keycloak:8080/auth"
realm: Test
resource: service
bearer-only: true
ssl-required: external
microprofile:
jwtauth:
realm: Test
token:
issuedBy: "http://test-kc-keycloak:8080/auth/realms/Test"
logging:
loggers:
kc:
level: DEBUG
见https://github.com/lbroque/test-kc
但在现实世界中，前端处于网络的黑暗面，而 KC 和服务应该处于受保护的环境中。所以前端通过反向代理和 HTTPS 方案看到 KC，而服务通过 HTTP 方案看到它。
据我所知，该服务尝试使用 SSL 访问 KC：
10:37:51,102 ERROR [adapters.rotation.JWKPublicKeyLocator] (default task-1) :
>>> Error when sending request to retrieve realm keys: org.keycloak.adapters.HttpClientAdapterException: IO error
at org.keycloak.adapters.HttpAdapterUtils.sendJsonHttpRequest(HttpAdapterUtils.java:57)
at org.keycloak.adapters.rotation.JWKPublicKeyLocator.sendRequest(JWKPublicKeyLocator.java:99)
at org.keycloak.adapters.rotation.JWKPublicKeyLocator.getPublicKey(JWKPublicKeyLocator.java:63)
at org.keycloak.adapters.rotation.AdapterTokenVerifier.getPublicKey(AdapterTokenVerifier.java:121)
at org.keycloak.adapters.rotation.AdapterTokenVerifier.createVerifier(AdapterTokenVerifier.java:111)
at org.keycloak.adapters.rotation.AdapterTokenVerifier.verifyToken(AdapterTokenVerifier.java:47)
at org.wildfly.swarm.keycloak.mpjwt.deployment.KeycloakJWTCallerPrincipalFactory.parse(KeycloakJWTCallerPrincipalFactory.java:26)
at org.wildfly.swarm.microprofile.jwtauth.deployment.auth.jaas.JWTLoginModule.validate(JWTLoginModule.java:100)
at org.wildfly.swarm.microprofile.jwtauth.deployment.auth.jaas.JWTLoginModule.login(JWTLoginModule.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
at org.jboss.security.authentication.JBossCachedAuthenticationManager.defaultLogin(JBossCachedAuthenticationManager.java:406)
at org.jboss.security.authentication.JBossCachedAuthenticationManager.proceedWithJaasLogin(JBossCachedAuthenticationManager.java:345)
at org.jboss.security.authentication.JBossCachedAuthenticationManager.authenticate(JBossCachedAuthenticationManager.java:323)
at org.jboss.security.authentication.JBossCachedAuthenticationManager.isValid(JBossCachedAuthenticationManager.java:146)
at org.wildfly.extension.undertow.security.JAASIdentityManagerImpl.verifyCredential(JAASIdentityManagerImpl.java:123)
at org.wildfly.extension.undertow.security.JAASIdentityManagerImpl.verify(JAASIdentityManagerImpl.java:96)
at org.wildfly.swarm.microprofile.jwtauth.deployment.auth.JWTAuthMechanism.authenticate(JWTAuthMechanism.java:77)
at org.wildfly.extension.undertow.security.jaspi.modules.HTTPSchemeServerAuthModule.validateRequest(HTTPSchemeServerAuthModule.java:88)
at org.jboss.security.auth.message.config.JBossServerAuthContext.invokeModules(JBossServerAuthContext.java:157)
at org.jboss.security.auth.message.config.JBossServerAuthContext.validateRequest(JBossServerAuthContext.java:135)
at org.jboss.security.plugins.auth.JASPIServerAuthenticationManager.isValid(JASPIServerAuthenticationManager.java:115)
at org.wildfly.extension.undertow.security.jaspi.JASPICAuthenticationMechanism.authenticate(JASPICAuthenticationMechanism.java:125)
at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:245)
at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100(SecurityContextImpl.java:231)
at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication(SecurityContextImpl.java:125)
at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:99)
at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:92)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:55)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jaspi.JASPICSecureResponseHandler.handleRequest(JASPICSecureResponseHandler.java:48)
at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269)
at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1946)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:316)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:310)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1639)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:223)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1037)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:965)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1064)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)
at org.apache.http.conn.ssl.SSLSocketFactory.createLayeredSocket(SSLSocketFactory.java:573)
at org.keycloak.adapters.SniSSLSocketFactory.createLayeredSocket(SniSSLSocketFactory.java:114)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:557)
at org.keycloak.adapters.SniSSLSocketFactory.connectSocket(SniSSLSocketFactory.java:109)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:414)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at org.keycloak.adapters.HttpAdapterUtils.sendJsonHttpRequest(HttpAdapterUtils.java:36)
... 72 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)
at sun.security.validator.Validator.validate(Validator.java:262)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1621)
... 94 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
... 100 more
这意味着它尝试使用 https 方案，不是吗？所以我想它使用在前端发送的 TOKEN 中找到的 URL，它使用 HTTPS 方案获得它，因为我配置了我的服务（所以它应该使用 HTTP 方案）：
thorntail:
keycloak:
secure-deployments:
model4xxx.war:
auth-server-url: "http://keycloak.hnr:9090/auth"
realm: xxx
resource: model4xxx
bearer-only: true
ssl-required: external
microprofile:
jwtauth:
realm: xxx
token:
issuedBy: "http://keycloak.hnr:9090/auth/realms/xxxx"
最后一点：KC 在 DOCKER 容器中。我尝试了几种环境变量 KEYCLOAK_FRONTEND_URL、KEYCLOAK_HOSTNAME 的组合。它似乎没有任何效果。
我想我不明白 auth-server-url 的目的。如果可以在令牌中找到信息有什么用？？？？
我敢肯定这是我看不到或不理解的非常明显的事情……请帮忙。