-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 AJ,
On 5/7/20 16:40, AJ Chen wrote: > 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 type log4j:ERROR > "org.apache.log4j.DailyRollingFileAppender" was loaded by > [ParallelWebappClassLoader Can I just say that the above is a masterpiece of diagnostic error messaging? I can already tell that you have a classloading issue, and it's almost certain that you have log4j.jar both in CATALINA_BASE/lib and your web application's META-INF/lib directory. Is that the case? - -chris -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl60gjsACgkQHPApP6U8 pFgydxAAvnJ1tJFklOMnsHnx+gFn7m0UkWjs1Sj+1zurmjuAzd64aXjwt8Mh2FRH JaJ4R0kYaHruoJxNDKelS+FIYgn1qe7D7LE7uq6gmNHg5b1JruoUXbk2GcaTfM55 htu9idB/JOyx5lmlP4tR6E/K7HctM6h2A7zuJ2s98VM2WljU/Ts6v5R1C53JbXq6 gzB0g6XYyVnuQx/9qoSyOSqKIBp3jLp2G8JlKje7SzKZcJeXSzq0HPUX6Do15VK1 Rl8ineKRjwDHgujjN3DiXqh+BnbdY6URsFApwGVxNLqh/ykIQYIHVxCGuRv9+W3D i0Uxx9C2p6rb6Nr8Tk6lxZjx1IMCC0JuKaunHPt6bQ26s/VNEROU5aztQ5RF/ynN pjFvwa/UIR6/i5u7mtGo2WBRLmH04KOu/7ZS8FL4ieKHXuaGGDvZlTe3AZ8hBPNx 2jHtmpqWiQaw1+lMnL7RxrmGBISIWSH4+MAKXWDzM4OSeTsKxTv2gcZ14Z9HfYZm JGO3DGgOSfWAnFSTYX9L/NodRfIDXLMPTAG/epWzSSiF5tf6nAzWNj6Vbi1L0VnS 8IdfqHavSGeIqhDqwTSwuQhXYdoc6AyBdY5WIYEGiUNu789b9SjNlY8/EWqjrJKx 3Au9YxYkMTqi2SL/r1cCd8HU+imS9L3aSZPKaOn73AsTtux/VCA= =IVj+ -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
