ClassNotFoundException for JSP while upgrading to Tomcat 8

I'm upgrading from Tomcat 6 to Tomcat 8. I have a legacy app that works on Tomcat 6 but will not work on Tomcat 8. The error message I'm getting is in red. I'm fairly new and didn't configure this app only enhanced it. There is an index.jsp page in the app.

INFO - Handling exception in ExceptionHandlerServlet
INFO - Request URI: /forecast/login.jsp
ERROR - Exception while handling request: /forecast/login.jsp
Aug 06, 2014 9:52:13 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [/forecast] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.login_jsp] with root cause
java.lang.ClassNotFoundException: org.apache.jsp.login_jsp
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:131)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:62)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:159)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:405)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:349)
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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
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:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

My web.xml file looks like this:

Doug, welcome to CodeRanch!

Aug 06, 2014 9:52:13 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [/forecast] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.login_jsp] with root cause
java.lang.ClassNotFoundException: org.apache.jsp.login_jsp

The exception states that it's not able to load the servlet class which was compiled by the container for the JSP. That's a bit weird. What does your login.jsp look like and what version and vendor of Java runtime are you using to run Tomcat 8?

Jaikiran Pai wrote:Doug, welcome to CodeRanch!

Aug 06, 2014 9:52:13 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [/forecast] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.login_jsp] with root cause
java.lang.ClassNotFoundException: org.apache.jsp.login_jsp

The exception states that it's not able to load the servlet class which was compiled by the container for the JSP. That's a bit weird. What does your login.jsp look like and what version and vendor of Java runtime are you using to run Tomcat 8?

I'm using jre7 from oracle. My login.jsp doesn't look terribly different than any of my login.jsp pages. My login.jsp looks like this: