log4j 报错

log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not assignable to a "org.apache.log4j.Appender" variable.

log4j:ERROR The class "org.apache.log4j.Appender" was loaded by 

log4j:ERROR [org.apache.catalina.loader.StandardClassLoader@6a2bcfcb] whereas object of type 

log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by [WebappClassLoader

  delegate: false

  repositories:

    /WEB-INF/classes/

----------> Parent Classloader:

org.apache.catalina.loader.StandardClassLoader@6a2bcfcb

].

log4j:ERROR Could not instantiate appender named "Console".

log4j:WARN No appenders could be found for logger (Message.queryMessageList).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.