JBOSS4.0.5中Log4J错误解决办法！

2009-04-29 13:44:30,468 ERROR [STDERR] log4j:ERROR A "org.jboss.logging.util.OnlyOnceErrorHandler" object is not assignable to a "org.apache.log4j.spi.ErrorHandler" variable.
2009-04-29 13:44:30,468 ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.spi.ErrorHandler" was loaded by
2009-04-29 13:44:30,468 ERROR [STDERR] log4j:ERROR [WebappClassLoader
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
java.net.FactoryURLClassLoader@99d56b
] whereas object of type

今天程序在jboss4.2环境中运行正常，启动无错误；但是放进测试环境就报出LOG4J的错误，排查到最后唯一不一样的就是JBOSS的版本不同，测试环境为4.0.5；解决办法就是将WEB-INF\lib下的log4j-1.2.13.jar删除。重新运行程序一切正常。