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From "Tevfik Aytekin" <ayte...@ii.metu.edu.tr>
Subject RE: "is not a servlet" problem
Date Sun, 28 Apr 2002 22:12:03 GMT
I have installed tomcat-4.0.1
No problems. There should be something wrong with tomcat-4.0.3

TA.

-----Original Message-----
From: Tevfik Aytekin [mailto:aytekin@ii.metu.edu.tr]
Sent: Sunday, April 28, 2002 10:19 PM
To: tomcat-user@jakarta.apache.org
Subject: "is not a servlet" problem


Hi,
I have looked at many places but I could not solve my problem.
I have migrated from tomcat 3.3 to tomcat 4.0.3
But my servlets which are working under tomcat 3.3 do not work under tomcat
4.0.3
The example servlets under tomcat 4.0.3 are working properly by the way.
The following error is reported. Can anybody help? Thanks in advance.



type Exception report

message Internal Server Error

description The server encountered an internal error (Internal Server Error)
that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Class monline.SessionManager.SessionManager
is not a Servlet
	at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:88
8)
	at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:653)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:214)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:190)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase
.java:475)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1012)
	at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
)
	at java.lang.Thread.run(Thread.java:536)


root cause

java.lang.ClassCastException: monline.SessionManager.SessionManager
	at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:88
4)
	at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:653)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:214)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:190)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase
.java:475)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1012)
	at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
)
	at java.lang.Thread.run(Thread.java:536)



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