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https://issues.apache.org/jira/browse/LOG4J2-3390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17486583#comment-17486583
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Ralph Goers commented on LOG4J2-3390:
-------------------------------------
This is a very good point. While 2.3.2 and 2.12.4 included the security fixes
they do not include all the enhancements done to log4j-1.2-api in the
subsequent minor versions.
No new features are going into the versions that support Java 6 and Java 7.
> AppenderSkeleton missing from log4j-1.2-api-2.3.2 bridge
> --------------------------------------------------------
>
> Key: LOG4J2-3390
> URL: https://issues.apache.org/jira/browse/LOG4J2-3390
> Project: Log4j 2
> Issue Type: Improvement
> Components: Log4j 1.2 bridge
> Affects Versions: 2.3.2
> Reporter: Vivek
> Priority: Critical
>
> Currently log4j1 is being used in our application with Java1.6 but due to
> vulnerabilities and EOL we are now trying to implement Log4j1.2 bridge in our
> application. We have use Log4j2.3.2 api with Log4j1.2 bridge(For Java6) but
> while running the application getting below ClassNotFoundException exception:
> -----------------------------------------------------------------------------------------------
> at com.rbsfm.wssservices.argon.MessageReader.run(MessageReader.java:150)
> Caused by: *java.lang.ClassNotFoundException:
> org.apache.log4j.AppenderSkeleton*
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 17 more
> 2022-02-03 15:25:09,564 DEBUG Stopping LoggerContext[name=3526198,
> org.apache.logging.log4j.core.LoggerContext@162dbb6]
> -----------------------------------------------------------------------------------------------
> Its looking like ApenderSkeleton class is missing from Log4j-1.2-api-2.3.2
> bridge jar. Could you please suggest if there is any other bridge which can
> be used and compatible with java6 or we can enhance 2.3.2 bridge API.
> Jars used in application :
> log4j-api-2.3.2.jar
> log4j-core-2.3.2.jar
> log4j-1.2-api-2.3.2.jar
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