ExternalAuth servlet error

[Greg Kuchyt]

I’m trying to port our v2 ExternalAuth servlet over to v3 but I’m running into problems when calling the ExternalAuth.startExternalAuthentication() method. This is in a contextRelative JSP so as best as I understand it should be in the same web app as the IDP. As I understand it this should just work so I’m assuming I’m missing something but I’m struggling to find what that is. My apologies up front if I missed something obvious here.

I'm receiving the following...

Stacktrace:] with root cause
 org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 13 in the jsp file: /uvm-external-auth.jsp
ExternalAuthentication cannot be resolved
10: // the confirmation page
11:
12: //try {
13:     final String key = ExternalAuthentication.startExternalAuthentication(request);
14: 



Stacktrace:
        at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
        at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:198)
        at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:450)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:361)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
        at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:574)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:356)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at net.shibboleth.idp.log.SLF4JMDCServletFilter.doFilter(SLF4JMDCServletFilter.java:72)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at net.shibboleth.utilities.java.support.net.RequestResponseContextFilter.doFilter(RequestResponseContextFilter.java:60)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
        at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:839)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1477)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:745)