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From Pascal "Paradis-Théberge" <pasca...@yahoo.com>
Subject inconsistent NullPointerException
Date Wed, 23 Oct 2002 16:09:53 GMT
Roughly one time out of two when jasper2 is trying to
recompile a jsp on my system I get the following
exception. I'm using Tomcat 4.1.12 (integrated with
jboss) and jdk 1.4.1_01.

It seems that something is misconfigured though I
don't recall changing any compilation parameters.

Is this a bug? Any info would help.

Thanks

Pascal

org.apache.jasper.JasperException: Unable to compile
class for JSP
        at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext
.java:479)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:184)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:2
89)
        at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240)
        at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:260)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve
.java:246)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2396)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:180)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:172)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
469)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcesso
r.java:1040)
        at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.ja
va:1151)
        at java.lang.Thread.run(Thread.java:536)
11:57:28,553 ERROR [Engine] ----- Root Cause -----
java.lang.NullPointerException
        at
org.apache.tools.ant.Project.setSystemProperties(Project.java:857)
        at
org.apache.tools.ant.Project.init(Project.java:311)
        at
org.apache.jasper.compiler.Compiler.getProject(Compiler.java:164)
        at
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:257)
        at
org.apache.jasper.compiler.Compiler.compile(Compiler.java:324)
        at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext
.java:474)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:184)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:2
89)
        at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240)
        at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:260)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve
.java:246)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2396)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:180)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:172)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
469)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)

        at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcesso
r.java:1040)
        at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.ja
va:1151)
        at java.lang.Thread.run(Thread.java:536)


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