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From "Abid (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-461) ERROR StatusLogger Unable to locate a logging implementation, using SimpleLogger
Date Sun, 08 Jun 2014 06:39:01 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14021120#comment-14021120
] 

Abid commented on LOG4J2-461:
-----------------------------

Adding of jars into subdirectory of "WL_HOME/server/lib/mbeantypes" was suggested by Oracle
Support with whom I have an SR open to track this issue. But I think this suggestion was not
correct because I suspect that WLS loads each jar inside the subdirectory inside a separate
classloader and hence this visibility issue between API and core jars. So I dropped this option
floated as a half-hearted solution by Oracle. And they have not been able to suggest anything
so far.

Given your pointers on weblogic use of OSGi, I packaged the core and api jars with my custom
security provider jar (which is generated by WLS tools), and modified "MANIFEST.MF"  to have
entries:

{code:title=MANIFEST.MF|borderStyle=solid}
...
..
Name: log4j-core-2.0-rc2-SNAPSHOT.jar
Name: log4j-api-2.0-rc2-SNAPSHOT.jar
Bundle-ClassPath: log4j-api-2.0-rc2-SNAPSHOT.jar,log4j-core-2.0-rc2-SNAPSHOT.jar,disruptor-3.2.0.jar,log4j2.xml,.
{code}


But nothing progressive; now WLS starts to throw NoClassDefFoundError:

{code:title=std.out/error|borderStyle=solid}
<Jun 8, 2014 9:08:27 AM AST> <Error> <Security> <BEA-090870> <The
realm "myrealm" failed to be loaded: weblogic.security.service.SecurityServiceException: java.lang.NoClassDefFoundError:
org/apache/logging/log4j/Logger.
weblogic.security.service.SecurityServiceException: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Logger
        at weblogic.security.service.CSSWLSDelegateImpl.initializeServiceEngine(CSSWLSDelegateImpl.java:341)
        at weblogic.security.service.CSSWLSDelegateImpl.initialize(CSSWLSDelegateImpl.java:220)
...
...
Caused By: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Logger
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:249)
        at com.bea.common.security.internal.legacy.service.SecurityProviderImpl.init(SecurityProviderImpl.java:46)
        at com.bea.common.engine.internal.ServiceEngineImpl.findOrStartService(ServiceEngineImpl.java:363)
        at com.bea.common.engine.internal.ServiceEngineImpl.findOrStartService(ServiceEngineImpl.java:315)
        Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        Truncated. see log file for complete stacktrace
>
<Jun 8, 2014 9:08:28 AM AST> <Notice> <Security> <BEA-090082> <Security
initializing using security realm myrealm.>
...
...
{code}

Thanks,
Abid

>  ERROR StatusLogger Unable to locate a logging implementation, using SimpleLogger
> ---------------------------------------------------------------------------------
>
>                 Key: LOG4J2-461
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-461
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: log4j 1.2 emulation
>    Affects Versions: 2.0-beta9, 2.0-rc1
>         Environment: Android
>            Reporter: Gaurav Kapoor
>            Priority: Blocker
>         Attachments: MANIFEST.MF
>
>
> ERROR StatusLogger Unable to locate a logging implementation, using SimpleLogger
> Code:
> Logger LOG = LogManager.getLogger(MainActivity.class);
> 			LOG.error("Test Log4j2");
> {code}
> <?xml version="1.0" encoding="UTF-8"?> 
> <Configuration> 
>   <Appenders> 
>     <Console name="STDOUT" target="SYSTEM_OUT"> 
>       <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/> 
>     </Console> 
>   </Appenders> 
>   <Loggers> 
>     <Logger name="hello" level="info"/> 
>     <Root level="trace"> 
>       <AppenderRef ref="STDOUT"/> 
>     </Root> 
>   </Loggers> 
> </Configuration>
> {code}



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