lOG4j日志的使用

package cn.yc.com.Test.logs;

import org.apache.log4j.Logger;


/**
 * 
 * <p>Description: log4j的使用方法，及级别定义</p>
 * @author 余辉
 * @date 2015年8月17日上午9:49:20
 * @version 1.0
 */

     public class logs {

        private static Logger logger = Logger.getLogger(logs.class.getName());


        public static void main(String[] args) {

            logger.info("logs类main方法："+logs.class.getName());

            int sum =0;
            logger.debug("debug信息");

            logger.info("info信息");

            logger.warn("warn信息");

            logger.error("error信息");


            try {
                sum = 1/0;//这是错误代码
            } catch (Exception e) {
                logger.error("error信息-->" + e.getMessage());
            }

        }

     }


log4j.properties的配置信息



log4j.rootLogger=ALL,stdoutlog,debuglog,infolog,warnlog,errorlog,fatallog

log4j.appender.stdoutlog=org.apache.log4j.ConsoleAppender
log4j.appender.stdoutlog.layout=org.apache.log4j.PatternLayout
log4j.appender.stdoutlog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n

#file debug
#log4j.appender.debuglog=com.mfniu.log.LogAppender
#log4j.appender.debuglog.layout=org.apache.log4j.PatternLayout
#log4j.appender.debuglog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
#log4j.appender.debuglog.datePattern='.'yyyy-MM-dd
#log4j.appender.debuglog.Threshold = DEBUG
#log4j.appender.debuglog.append=true
#log4j.appender.debuglog.File=logs/debug.log

#file info
log4j.appender.infolog=cn.yc.com.log.LogAppender
log4j.appender.infolog.layout=org.apache.log4j.PatternLayout
log4j.appender.infolog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.infolog.datePattern='.'yyyy-MM-dd
log4j.appender.infolog.Threshold = INFO 
log4j.appender.infolog.append=true
log4j.appender.infolog.File=/logs/info.log

#file warn
log4j.appender.warnlog=cn.yc.com.log.LogAppender
log4j.appender.warnlog.layout=org.apache.log4j.PatternLayout
log4j.appender.warnlog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.warnlog.datePattern='.'yyyy-MM-dd
log4j.appender.warnlog.Threshold = WARN 
log4j.appender.warnlog.append=true
log4j.appender.warnlog.File=/logs/warn.log

#file error
log4j.appender.errorlog=cn.yc.com.log.LogAppender
log4j.appender.errorlog.layout=org.apache.log4j.PatternLayout
log4j.appender.errorlog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.errorlog.datePattern='.'yyyy-MM-dd
log4j.appender.errorlog.Threshold = ERROR 
log4j.appender.errorlog.append=true
log4j.appender.errorlog.File=/logs/error.log

#file fatal
log4j.appender.fatallog=cn.yc.com.log.LogAppender
log4j.appender.fatallog.layout=org.apache.log4j.PatternLayout
log4j.appender.fatallog.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.fatallog.datePattern='.'yyyy-MM-dd
log4j.appender.fatallog.Threshold = FATAL 
log4j.appender.fatallog.append=true
log4j.appender.fatallog.File=/logs/fatal.log