All,
On 6/2/21 13:52, Christopher Schultz wrote:
All,
I don't do too much work with JSPs, but I do have a few quick-and-dirty
administrative things including one called the "session snooper" which
just dumps out loads of information about the current user's session
object.
I'm getting this error in production, and I can reproduce it every time
I access the page. Here's the exception stack trace:
java.lang.ClassNotFoundException: org.apache.jsp.admin.SessionSnooper_jsp
java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:128)
at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:59)
at
org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:159)
at
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:192)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:413)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
[...filters, etc...]
This is a relatively simple JSP. There are no tag libraries in use and
there are 3 imports of JSPs which contain some static utility functions.
Both files
app/work/Catalina/localhost/[$context]/org/apache/jsp/admin/SessionSnooper_jsp.java
and
app/work/Catalina/localhost/[$context]/org/apache/jsp/admin/SessionSnooper_jsp.java
exist and have file-dates from way back in 2016. (No recent changes)
The context has been restarted/reloaded (not redeployed) recently using
JMX a few times, but nothing else relevant comes to mind.
This is Tomcat 8.5.65 from a stock ASF-distrubuted tarball, launched
using "catalina.sh start". Nothing fancy.
What other information can I collect to help debug this? My expectation
would be that the class should be findable and runnable. Tomcat should
not be tripping over its own feet on this one IMO.
There is more in my catalina.out file:
Jun 02, 2021 4:12:27 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path
[/[$context]] threw exception [java.lang.NullPointerException] with root
cause
java.lang.NullPointerException
at
org.apache.jasper.JspCompilationContext.createOutputDir(JspCompilationContext.java:685)
at
org.apache.jasper.JspCompilationContext.getOutputDir(JspCompilationContext.java:204)
at
org.apache.jasper.JspCompilationContext.getClassFileName(JspCompilationContext.java:537)
at
org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:464)
at
org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:430)
at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:590)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
Here's the code from createOutputDir:
l684 File base = options.getScratchDir();
l685 baseUrl = base.toURI().toURL();
l686 outputDir = base.getAbsolutePath() + File.separator + path +
l687 File.separator;
l688 if (!makeOutputDir()) {
l689 throw new
IllegalStateException(Localizer.getMessage("jsp.error.outputfolder"));
l690 }
I'm not playing any games with JSP configuration or scratch/work
directory locations, etc.
-chris
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