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https://issues.apache.org/jira/browse/LOG4J2-477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856224#comment-13856224
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Tal Liron edited comment on LOG4J2-477 at 12/24/13 9:17 AM:
------------------------------------------------------------
I'm sorry, but this is still not fixed. Here is the new stack trace (built from
TRUNK):
{code}
java.lang.NullPointerException
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:187)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:145)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:81)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:83)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:34)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:200)
{code}
I changed line 187 to this:
{code}
ClassLoader parent = loader != null ? loader.getParent() : null;
{code}
You're also accessing "loader" in line 222! I changed it to this:
{code}
if (loader != null){
CONTEXT_MAP.putIfAbsent(loader.toString(), r);
ctx = CONTEXT_MAP.get(name).get().get();
}
{code}
With my changes, the NPE disappeared -- but I honestly don't understand this
code, so i don't want to suggest that my fixes are correct.
was (Author: emblemparade):
I'm sorry, but this is still not fixed. Here is the new stack trace (built from
TRUNK):
{code}
java.lang.NullPointerException
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:187)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:145)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:81)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:83)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:34)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:200)
{code}
You're also accessing "loader" in line 222!
> NPE in ClassLoaderContextSelector
> ---------------------------------
>
> Key: LOG4J2-477
> URL: https://issues.apache.org/jira/browse/LOG4J2-477
> Project: Log4j 2
> Issue Type: Improvement
> Components: Core
> Affects Versions: 2.0-beta9
> Reporter: Tal Liron
> Assignee: Remko Popma
>
> The problem is that some classes don't have class loaders: this can happen
> when working with dynamic JVM languages (Rhino, Jython, etc.)
> Here's the stack trace I got:
> {code}
> java.lang.NullPointerException
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:182)
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:145)
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:81)
> at
> org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:83)
> at
> org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:34)
> {code}
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