简单的apache log4j日志设置与使用实例

package org.apache.mrlog;

import org.apache.log4j.EnhancedPatternLayout;
import org.apache.log4j.Level;
import org.apache.log4j.RollingFileAppender;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public  class MRLog {
 
 private static MRLog mrLog = null;
 private static String logFilePath = null;
 private static String logFileName = null;

 private Logger logger = null;
 
 public MRLog(String logFilePath, String logName)
 {
  this.logFileName = logName;
  
  
  initial(logFilePath);
 }
 
 private void initial(String logFilePath)
 {
  //logger 记录器
    org.apache.log4j.Logger  log4jLogger = org.apache.log4j.Logger.getLogger(logFileName);
    log4jLogger.setAdditivity(false);
    
    //日志以何种形式输出
          EnhancedPatternLayout enLayout = new EnhancedPatternLayout(
                  "%d{yyyy-MM-dd HH:mm:ss} %5p: %m%n");
    org.apache.log4j.RollingFileAppender fAppender = new org.apache.log4j.RollingFileAppender();
    
        fAppender.setLayout(enLayout);
          
           fAppender.setFile(logFilePath);
           fAppender.activateOptions();

           log4jLogger.addAppender(fAppender);
           log4jLogger.setLevel(Level.ALL);   //设置用户日志级别， ALL为最低等级，用于打开所有日志记录

           logger = LoggerFactory.getLogger(logFileName);

 }
 
 public static MRLog getMrLog()
 {
  String logPathDir = "E:\\Program\\JAVA\\MRLog\\mareduce.log";
  String logName = MRLog.class.getName();
  return new MRLog(logPathDir, logName);
 }
 
 public void logInformation(String message)
 {
  this.logger.info(message);
 }
   
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  MRLog mrLog = MRLog.getMrLog();
  //mrLog.logInformation("this is a test logMessage");
  System.out.println(Long.toString(System.currentTimeMillis()));
 }

}