Right on.
Robert Elliot wrote:
You have slf4j-log4j12.jar, logback-classic.jar and slf4j-simple.jar on
your classpath - that's three separate SLF4J implementations. You
should have only one (logback-classic, presumably). It's initialising
SLF4J Simple, so when you retrieve the SLF4J LoggerFactory it's
returning an org.slf4j.impl.SimpleLoggerFactory which you then try and
cast to ch.qos.lobgack.LoggerFactory, which naturally fails.
Take slf4j-log4j12.jar and slf4j-simple.jar off your classpath - if you
are trying to redirect log4j to slf4j then you need
log4j-over-slf4j.jar, not slf4j-log4j12.jar which instead uses log4j as
the slf4j implementation.
--
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch
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