（本文档仅供参考）
问题现象
单点登录，跳转到CAS界面登录后报错误 HTTP 403 - 被禁止
31-Oct-2023 20:42:46.381 严重 [http-nio-10530-exec-7] org.apache.catalina.core.StandardHostValve.custom Exception Processing ErrorPage[errorCode=500, location=/errorCode.jsp]
javax.servlet.ServletException: org.jasig.cas.client.validation.TicketValidationException: 鏈兘澶熻瘑鍒嚭鐩爣 'ST-6-1sUqeNAA2OSlxEUP-8hodm2tAEwSmartbi-PC'绁ㄦ牴
at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:214)
at smartbi.extension.ExtensionFilter$2.doFilter(ExtensionFilter.java:273)
at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:241)
at smartbi.extension.ExtensionFilter$2.doFilter(ExtensionFilter.java:273)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:76)
at smartbi.extension.ExtensionFilter$2.doFilter(ExtensionFilter.java:273)
at smartbi.extension.ExtensionFilter.doFilterInternal(ExtensionFilter.java:276)
at smartbi.extension.ExtensionFilter.doFilter(ExtensionFilter.java:127)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:464)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:388)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:316)
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:403)
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:249)
at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:366)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:639)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:881)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1647)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.jasig.cas.client.validation.TicketValidationException: 鏈兘澶熻瘑鍒嚭鐩爣 'ST-6-1sUqeNAA2OSlxEUP-8hodm2tAEwSmartbi-PC'绁ㄦ牴
at org.jasig.cas.client.validation.Cas20ServiceTicketValidator.parseResponseFromServer(Cas20ServiceTicketValidator.java:86)
at org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:217)
at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:180)
... 30 more
解决方案
此问题一般是cas.ext扩展包里的配置文件配置有误导致。注意检查CAS.ext\META-INF\extension.xml 、CAS.ext\vision\js\ext\ConfigurationPatch.js 两个文件，建议从 WinRAR 窗口中拖出来，对其进行修改。接着将修改后的文件，拖放回 WinRAR 窗口中，覆盖以前的旧文件。关闭 WinRAR 窗口保存修改。
