commons-logging日志工具[续。。。。。。]

　　
package com.logging.commons;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class CommonsLog {
private static Log log = LogFactory.getLog(CommonsLog.class);

public static void main(String[] args) {
// TODO Auto-generated method stub
log.trace("trace");
log.debug("debug");
log.info("info");
log.warn("warn");
log.error("error");
log.fatal("fatal");
try{
String s = null;
s.length();
}catch(Exception e){
log.trace("trace一个异常",e);
log.debug("debug一个异常",e);
log.info("info一个异常",e);
log.warn("warn一个异常",e);
log.error("error一个异常",e);
log.fatal("fatal一个异常",e);
}
}
}