Hi, On Tue, Mar 8, 2022 at 7:48 AM Pooja Pandey <pooja.pan...@asg.com.invalid> wrote: > I am trying to migrate from log4j1.x to log4j2.17.2 using log4j1.x bridge > approach. I am getting below ClassCastException error message. Please let me > know if you have any idea how to fix this. > > 2022-03-08 01:41:17,023 http-nio-8088-exec-9 ERROR Unable to create Lookup > for bundle java.lang.ClassCastException: class > org.apache.logging.log4j.core.lookup.ResourceBundleLookup
Could you tell us if you have any Log4j libraries in Tomcat's classpath (`lib` subfolder of Tomcat's installation folder)? I believe this is related to my pet bug applied to the plugin loader: https://issues.apache.org/jira/browse/LOG4J2-3427 If this was your situation, adding libraries to your application certainly works, but removing them from Tomcat's server classpath also should work. Piotr --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
