http://blog.csdn.net/kxcfzyk/article/details/38613861

import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.apache.log4j.Logger;http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Logger.html //public static final Log LOG = LogFactory.getLog(SystemLogAspect.class);    public static final Logger LOG = LoggerFactory.getLogger(SystemLogAspect.class);	
        
     
      org.slf4j
         
     
      slf4j-log4j12
         
     
      1.7.6
     
    
        
     
      org.slf4j
         
     
      log4j-over-slf4j
         
     
      1.7.25