我正在使用WSO2 Identity Server 5.10.0，并且我正在尝试使用外部ADFS服务器来实现WSO2IS。
我已经跟随https://docs.wso2.com/display/IS570/Configuring+AD+FS+作为+a+Federated+Authenticator示例，并从WSO2管理控制台将我的ADFS配置为身份提供程序。服务器可以重定向到ADFS登录页，但当ADFS向WSO2IS发送回调时，它会引发NullPointerException。
完整的堆栈跟踪如下：
[2020-04-02 17:49:56,407] [3a9f62a7-17f1-4944-b561-e36a7b21736d] ERROR {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} - Exception in Authentication Framework java.lang.NullPointerException
at org.wso2.carbon.identity.application.authentication.framework.AbstractApplicationAuthenticator.publishAuthenticationStepAttempt(AbstractApplicationAuthenticator.java:170)
at org.wso2.carbon.identity.application.authentication.framework.AbstractApplicationAuthenticator.process(AbstractApplicationAuthenticator.java:94)
at org.wso2.carbon.identity.application.authentication.framework.handler.step.impl.DefaultStepHandler.doAuthentication(DefaultStepHandler.java:506)
at org.wso2.carbon.identity.application.authentication.framework.handler.step.impl.DefaultStepHandler.handleResponse(DefaultStepHandler.java:480)
at org.wso2.carbon.identity.application.authentication.framework.handler.step.impl.DefaultStepHandler.handle(DefaultStepHandler.java:179)
at org.wso2.carbon.identity.application.authentication.framework.handler.sequence.impl.DefaultStepBasedSequenceHandler.handle(DefaultStepBasedSequenceHandler.java:185)
at org.wso2.carbon.identity.application.authentication.framework.handler.sequence.impl.GraphBasedSequenceHandler.handle(GraphBasedSequenceHandler.java:111)
at org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultAuthenticationRequestHandler.handle(DefaultAuthenticationRequestHandler.java:158)
at org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator.handle(DefaultRequestCoordinator.java:240)
at org.wso2.carbon.identity.application.authentication.framework.servlet.CommonAuthenticationServlet.doPost(CommonAuthenticationServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:60)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.wso2.carbon.identity.captcha.filter.CaptchaFilter.doFilter(CaptchaFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.owasp.csrfguard.CsrfGuardFilter.doFilter(CsrfGuardFilter.java:72)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:65)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.wso2.carbon.identity.context.rewrite.valve.TenantContextRewriteValve.invoke(TenantContextRewriteValve.java:86)
at org.wso2.carbon.identity.authz.valve.AuthorizationValve.invoke(AuthorizationValve.java:110)
at org.wso2.carbon.identity.auth.valve.AuthenticationValve.invoke(AuthenticationValve.java:75)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:145)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
at org.wso2.carbon.tomcat.ext.valves.RequestEncodingValve.invoke(RequestEncodingValve.java:49)
at org.wso2.carbon.tomcat.ext.valves.RequestCorrelationIdValve.invoke(RequestCorrelationIdValve.java:119)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
WSO:中设置的ADFS详细信息
Identity Provider Name: adfs
Uploaded valid PEM certificate
Federation Authenticators -> SAML2 Web SSO Configuration -> Enabled SAML2 Web SSO
Service Provider Entity Id : wso2is
Identity Provider Entity Id : {from ADFS metadata}
ACS URL : https:\{ip}:9443commonauth
SSO URL : {from ADFS metadata}
有人能判断出是不是出了什么问题吗？
此空指针问题已在此处报告并在master中修复。但是，当发生故障时，这一行代码抛出的NPE问题发生在处理来自联合IDP的SAML响应时，并且用户为null。从这里可以在SAML出站组件中找到实际错误。
因此，您的根本问题似乎是，在从ADFS端接收到的SAML断言中，用户标识符不可用。请检查一下。请验证从ADFS获得的saml响应，并检查它是否在身份验证响应中发送用户信息。