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Posted to dev@tomcat.apache.org by Kief Morris <ki...@kief.com> on 2001/04/27 09:59:56 UTC

NullPointers thrown during tester

Recently, when I run tester my tomcat console shows scads of NullPointerExceptions:
The tests all pass though ...

java.lang.NullPointerException
        at org.apache.naming.resources.DirContextURLConnection.getLastModified(DirContextURLConnection.java:247)
        at org.apache.jasper.compiler.JspCompiler.isOutDated(JspCompiler.java:173)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:118)
        at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:528)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:175)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:187)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:453)
        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:192)
        at org.apache.tester.StaticFilter.doFilter(StaticFilter.java:112)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:192)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:255)
        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:882)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:225)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:469)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
        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:882)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2227)
        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.AccessLogValve.invoke(AccessLogValve.java:446)
        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:882)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:162)
        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:882)
        at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:875)
        at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:952)
        at java.lang.Thread.run(Thread.java:484)

Re: NullPointers thrown during tester

Posted by Remy Maucherat <re...@apache.org>.
> Recently, when I run tester my tomcat console shows scads of
NullPointerExceptions:
> The tests all pass though ...

I just looked at my code in the url connection, and if the resource does not
exist, it will throw a NPE. Oops. Adding a null check should fix it.
Other methods in the class are also affected.

Remy

Re: NullPointers thrown during tester

Posted by "Craig R. McClanahan" <cr...@apache.org>.

On Fri, 27 Apr 2001, Kief Morris wrote:

> Recently, when I run tester my tomcat console shows scads of NullPointerExceptions:
> The tests all pass though ...
> 

A bunch of the exceptions that are logged are deliberate (testing the
error page propogation mechanism and so on), but this one sounds like it
might be a real bug.  Can you narrow down which test might be triggering
it?

Craig


> java.lang.NullPointerException
>         at org.apache.naming.resources.DirContextURLConnection.getLastModified(DirContextURLConnection.java:247)
>         at org.apache.jasper.compiler.JspCompiler.isOutDated(JspCompiler.java:173)
>         at org.apache.jasper.compiler.Compiler.compile(Compiler.java:118)
>         at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:528)
>         at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:175)
>         at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:187)
>         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
>         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:453)
>         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:192)
>         at org.apache.tester.StaticFilter.doFilter(StaticFilter.java:112)
>         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212)
>         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:192)
>         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:255)
>         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:882)
>         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:225)
>         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
>         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:469)
>         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
>         at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
>         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:882)
>         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2227)
>         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.AccessLogValve.invoke(AccessLogValve.java:446)
>         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:882)
>         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:162)
>         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:882)
>         at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:875)
>         at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:952)
>         at java.lang.Thread.run(Thread.java:484)
> 
>