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From "Scott Purcell" <spurc...@vertisinc.com>
Subject log method showing error:
Date Mon, 01 Jul 2002 14:40:27 GMT
Hello,
I would like to use the log method to write debug lines to a log file, but I am getting the
following errors when trying this. I am running Tomcat/4.0.3 on NT. And when I do a simple
log("here is some message.");
I get the following error, when trying to call the servlet with the log() method in my code.
If I take out the log() method, the servlet is happy again: 

Could someone advice me on this, or point me to the proper docs.

Sincerely
Scott

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: Servlet.init() for servlet transform threw exception
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:935)
	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:653)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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.java:190)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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:566)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	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:484)
root cause 
java.lang.NullPointerException
	at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:205)
	at javax.servlet.GenericServlet.log(GenericServlet.java:300)
	at transform.init(transform.java:24)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:916)
	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:653)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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.java:190)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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:566)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	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:484)



Scott Purcell | Developer | VERTIS | 555 Washington Ave. 4th Floor | St. Louis, MO 63101 |
T 314.588.0720 | F 314.588.0735 | spurcell@vertisinc.com | http://www.vertisinc.com

Vertis is a global powerhouse for integrated marketing and advertising solutions that seamlessly
combine advertising, direct marketing, media, imaging and progressive technology. Vertis'
products and services include: consumer and media research, media planning and placement,
creative services, digital media production, targetable insert programs, fully integrated
direct marketing programs, circulation-building newspaper products and eMarketing.




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