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https://issues.apache.org/jira/browse/LOG4J2-662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14039746#comment-14039746
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Remko Popma commented on LOG4J2-662:
------------------------------------
The trace output shows a few interesting points:
First, these three lines of log output are coming from log4j-1.2, not log4j2...
{code}
ERROR [stderr] [thread] log4j:WARN no appender could be found for logger ...
ERROR [stderr] [thread] log4j:WARN Please initialize the log4j system properly
ERROR [stderr] [thread] log4j:WARN See
http://logging.apache.org/log4j/1.2/faq.html#noconfig ...
{code}
This means that some code that is being executed is using the log4j-1.2 API.
You may be able to resolve this by simply adding the log4j-1.2-api-2.0.jar to
the classpath.
Then the lines below that
{code}
ERROR [stderr] [thread] ERROR StatusLogger Could not search jar file
'/path/to/something.war/WEB-INF/lib/log4j-core-2.0-rc1.jar/org/apache/logging/log4j/core/'
for classes matching criteria: annotated with @Plugin file not found
...
ERROR [stderr] [thread] ERROR StatusLogger Could not search jar file
'/path/to/something.war/WEB-INF/lib/log4j-core-2.0-rc1.jar/org/apache/logging/log4j/core/'
for classes matching criteria: annotated with @Plugin is assignable to
LogEventPatternConverter file not found
...
{code}
These status log statements _are_ coming from log4j2, but there seems to be
something wrong. Log4j is trying to open a FileInputStream to a File with path
'/path/to/something.war/WEB-INF/lib/log4j-core-2.0-rc1.jar/org/apache/logging/log4j/core/',
but gets a FileNotFoundException.
What I don't understand is why the path became the way it is instead of just
'/path/to/something.war/WEB-INF/lib/log4j-core-2.0-rc1.jar'. Is it possible
that the log4j2 jar files have been unzipped into the something.war/WEB-INF/lib
folder?
> AsyncLogger Missing File Location and Line
> ------------------------------------------
>
> Key: LOG4J2-662
> URL: https://issues.apache.org/jira/browse/LOG4J2-662
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.0-rc1
> Environment: CentOS release 6.5 (Final)
> Memory 16GB
> AMD Phenom(tm) II X6 1090T Processor
> JBoss 7.1.0-cr1
> Reporter: Bobby
> Labels: async, file
> Attachments: log4j2-notshowing-file-location.png, log4j2-trace
> (2).png, log4j2.xml
>
>
> Using attached configuration file, i wasn't able to print filename and file
> line in log.
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