1 ### \u8BBE\u7F6E###
 2 log4j.rootLogger = debug,stdout,D,E
 3 
 4 ### \u8F93\u51FA\u4FE1\u606F\u5230\u63A7\u5236\u62AC ###
 5 log4j.appender.stdout = org.apache.log4j.ConsoleAppender
 6 log4j.appender.stdout.Target = System.out
 7 log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
 8 log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
 9 
10 ### \u8F93\u51FADEBUG \u7EA7\u522B\u4EE5\u4E0A\u7684\u65E5\u5FD7\u5230=E://logs/error.log ###
11 log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
12 log4j.appender.D.File = E://logs/log.log  
13 log4j.appender.D.Append = true
14 log4j.appender.D.Threshold = DEBUG 
15 log4j.appender.D.layout = org.apache.log4j.PatternLayout
16 log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
17 
18 ### \u8F93\u51FAERROR \u7EA7\u522B\u4EE5\u4E0A\u7684\u65E5\u5FD7\u5230=E://logs/error.log ###
19 log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
20 log4j.appender.E.File =E://logs/error.log 
21 log4j.appender.E.Append = true
22 log4j.appender.E.Threshold = ERROR 
23 log4j.appender.E.layout = org.apache.log4j.PatternLayout
24 log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

 1 package com.net.www;
 2 import org.apache.log4j.Logger;
 3 
 4 public class testday {
 5     private static Logger logger = Logger.getLogger(testday.class);  
 6 
 7     /** 
 8      * @param args 
 9      */  
10     public static void main(String[] args) {  
11         // System.out.println("This is println message.");  
12 
13         // 记录debug级别的信息  
14         logger.debug("This is debug message.");  
15         // 记录info级别的信息  
16         logger.info("This is info message.");  
17         // 记录error级别的信息  
18         logger.error("This is error message.");  
19     }
20 }