I use eclipse to develop web app for tomcat, Web app has a dependent
project and so the dependent project and all jars are added on the
classpath for tomcat runtime. Log4j works on tomcat 6. But after upgrate to
tomcat 9, log4j failed to start with the following error. Anyone has seen
similar problem? log4j2 also failed. Thanks.

log4j:ERROR A "org.apache.log4j.DailyRollingFileAppender" object is not
assignable to a "org.apache.log4j.Appender" variable.
log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
log4j:ERROR [sun.misc.Launcher$AppClassLoader@18b4aac2] whereas object of
log4j:ERROR "org.apache.log4j.DailyRollingFileAppender" was loaded by


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