log log4j配置

 

    log4j配置

日志路径:

 web方式:
web.xml

<context-param>    
        <param-name>log4jConfigLocation</param-name>    
        <param-value>webapp.root</param-value>    

</context-param>       
<context-param>    
        <param-name>log4jRefreshInterval</param-name>    
        <param-value>60000</param-value>    
</context-param> 
        <listener>    
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>    

</listener>

log4j.properites

log4j.rootCategory=INFO,stdout,R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS}  %p %t %c - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${webapp.root}/logs/log.log

log4j.appender.R.MaxFileSize=10000KB
log4j.appender.R.MaxBackupIndex=100
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS}  %p %t %c - %m%n

#log4j.logger.org.hibernate=INFO
log4j.logger.com.sohu.fortune.talk=DEBUG
log4j.logger.org.apache.commons.httpclient=ERRORf

 

 

 

 

Log4j支持两种配置文件格式,一种是XML格式的文件,一种是properties格式的文件。

 获取路径:

String rootPath=this.getClass().getClassLoader().getResource("").getPath();

1.log4j.properties配置方法:

步骤:

0.下载log4j的jar包;

1.新建java项目;

2.新建包:

3.新建类:

4.在src下新建log4J.properties文本文件【日志配置文件】

5.新建lib文件夹:【存放第三方jar包】

6.新建bin文件夹:【存放生成的.class文件】

 

 

如下图:

 

 

package com.loveryw;

import org.apache.log4j.Logger; 

import org.apache.log4j.PropertyConfigurator;

public class log4Test {
 private static Logger loger;

 //测试函数
 public static void main(String args[])
 {
     String filePath="C:\\workspace\\Log4jTest\\src\\";
     PropertyConfigurator.configure(filePath+"log4j.properties");

//获取路径,并加载log4j的配置文件
/*
roperties properties=new Properties();
InputStream inStream =inStream = Launcher.class.getClassLoader().getResourceAsStream("conf/log4j.properties");
  try {
  properties.load(inStream);
  }catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  PropertyConfigurator.configure(properties);
  log.info("start...");
*/ loger=Logger.getLogger("log4Test"); loger.debug("我是个bug"); loger.info("我是个info"); loger.error("我是个erro"); } }

 配置文件内容:log4J.properites

log4j.rootLogger=info,stdout,info,debug,error
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
 
log4j.logger.info=info
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold = INFO 
log4j.appender.info.append=true
log4j.appender.info.File=C:\\workspace\\Log4jTest\\logs\\info.log
 
log4j.logger.debug=debug
log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
log4j.appender.debug.layout=org.apache.log4j.PatternLayout
log4j.appender.debug.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.debug.datePattern='.'yyyy-MM-dd
log4j.appender.debug.Threshold = DEBUG 
log4j.appender.debug.append=true
log4j.appender.debug.File=C:\\workspace\\Log4jTest\\logs\\debug.log

log4j.logger.error=error
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=[%-5p] [%d{HH:mm:ss}] %c - %m%n
log4j.appender.error.datePattern='.'yyyy-MM-dd
log4j.appender.error.Threshold = ERROR 
log4j.appender.error.append=true
log4j.appender.error.File=C:\\workspace\\Log4jTest\\logs\\error.log 

 

2.xml配置方法:【主要用于web的配置】

 

常用参数说明:

1.log4j有三种主要组件:logger、appender and layout
  2.Log4j提供的appender有以下几种:
  org.apache.log4j.ConsoleAppender(控制台)
  org.apache.log4j.FileAppender(文件)
  org.apache.log4j.DailyRollingFileAppender(每天产生一个日志文件)
  org.apache.log4j.RollingFileAppender(文件大小到达指定尺寸的时候产生一个新的文件)
  org.apache.log4j.WriterAppender(将日志信息以流格式发送到任意指定的地方)
  3.Log4j提供的layout有以下几种:
  org.apache.log4j.HTMLLayout(以HTML表格形式布局)
  org.apache.log4j.PatternLayout(可以灵活地指定布局模式)
  org.apache.log4j.SimpleLayout(包含日志信息的级别和信息字符串)
  org.apache.log4j.TTCCLayout(包含日志产生的时间、线程、类别等等信息)
  4.Log4j提供的几种输出格式:
  %M:Used to output the method name where the logging request was issued.
  %m:Used to output the application supplied message associated with the logging event.
  %l:Used to output location information of the caller which generated the logging event
  %L:Used to output the line number from where the logging request was issued.
  %p:Used to output the priority of the logging event.
  %n:Outputs the platform dependent line separator character or characters.
  %r:Used to output the number of milliseconds elapsed since the start of the application until the creation of the logging event.
  %F:Used to output the file name where the logging request was issued.
  %d:Used to output the date of the logging event.
  %c:Used to output the category of the logging event
  %C:Used to output the fully qualified class name of the caller issuing the logging request
  5.如果是对于效率要求比较高的话,要在log.debug()之前加上log.isDebugEnabled()进行判断,这样能够大大减少执行时间
  6.对于各个appenders,共有的属性是layout(一般设置为org.apache.log4j.PatternLayout),Threshold(Log的级别)
  (1)ConsoleAppender:Target(System.out和System.err)
  (2)FileAppender:File(定义输出的文件名),Append(定义是否为追加)
  (3)DailyRollingFileAppender(除FileAppender属性外):MaxFileSize(最大文件大小),MaxBackupIndex()

posted @ 2015-06-27 02:52  土豆哥  阅读(312)  评论(0编辑  收藏  举报