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Posted to dev@tomcat.apache.org by bu...@apache.org on 2016/05/18 16:11:18 UTC

[Bug 59567] New: NPE in org.apache.jasper.servlet.TldScanner$TldScannerCallback.scanWebInfClasses

https://bz.apache.org/bugzilla/show_bug.cgi?id=59567

            Bug ID: 59567
           Summary: NPE in
                    org.apache.jasper.servlet.TldScanner$TldScannerCallbac
                    k.scanWebInfClasses
           Product: Tomcat 8
           Version: 8.0.35
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Jasper
          Assignee: dev@tomcat.apache.org
          Reporter: andrei.ivanov@gmail.com

Upgrading from 8.0.32 to 8.0.35 triggers the following NPE:

18-May-2016 10:14:21.118 SEVERE [localhost-startStop-1]
org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild:
start: 
 org.apache.catalina.LifecycleException: Failed to start component
[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/inventorymanager]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:940)
    at
org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1816)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
    at
org.apache.jasper.servlet.TldScanner$TldScannerCallback.scanWebInfClasses(TldScanner.java:401)
    at
org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:208)
    at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262)
    at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:106)
    at
org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:103)
    at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5261)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 10 more


Seems it's because there's an empty folder WEB-INF/classes/META-INF.

The workaround is to create an empty file in that folder.

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[Bug 59567] NPE in org.apache.jasper.servlet.TldScanner$TldScannerCallback.scanWebInfClasses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59567

Remy Maucherat <re...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 OS|                            |All

--- Comment #1 from Remy Maucherat <re...@apache.org> ---
Ok, the code in scanWebInfClasses was changed to use getResourcePaths, which
returns null for non existing paths, which then causes a NPE. I will fix that.

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[Bug 59567] NPE in org.apache.jasper.servlet.TldScanner$TldScannerCallback.scanWebInfClasses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59567

--- Comment #3 from Andrei Ivanov <an...@gmail.com> ---
Great :-)
Thank you.

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[Bug 59567] NPE in org.apache.jasper.servlet.TldScanner$TldScannerCallback.scanWebInfClasses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59567

Remy Maucherat <re...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Remy Maucherat <re...@apache.org> ---
The fix will be in 9M7, 8.5.3 and 8.0.36.

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