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Posted to dev@tomcat.apache.org by bu...@apache.org on 2002/01/23 20:49:42 UTC
DO NOT REPLY [Bug 5988] New: -
Jasper Null Pointer Exception Error
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Jasper Null Pointer Exception Error
Summary: Jasper Null Pointer Exception Error
Product: Tomcat 4
Version: 4.0.1 Final
Platform: PC
OS/Version: Windows NT/2K
Status: NEW
Severity: Major
Priority: Other
Component: Jasper
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: pavel.brun@sympatico.ca
Quite a number of times, I receive a null pointer exception error when
trying to access components with the "request" and/or "pagecontext" objects
within a JSP page. Could this be related to session issues? Could this be
related to using the <jsp:usebean> attribute?
Here is the stack-trace dump on one of the pages:
java.lang.NullPointerException
at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:198)
at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:132)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at org.apache.jsp.display$jsp._jspService(display$jsp.java:101)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspServlet.java:202)
at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:382)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:243)
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:201)
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:2344)
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:164)
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:462)
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:163)
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:1011)
at org.apache.catalina.connector.http.HttpProcessor.run
(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:484)
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