log4j配置--根据日志级别出入到不同路径

1、配置相同级别的日志出入到不同路径

log4j.rootLogger=DEBUG, A1,A2

#输出到控制台
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n
# A1 uses PatternLayout.

#输出到文件
log4j.appender.A2=org.apache.log4j.FileAppender
log4j.appender.A2.File=D:/temp/baits.log
log4j.appender.A2.Append=true
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n

2、配置不同级别的日志输出到不同路径

DOMConfigurator.configure("resource/log4j.xml");
//PropertyConfigurator.configure("resource/log4j.properties");
使用此加载不同的配置

（1）、使用properties文件

添加如下代码

log4j.appender.A2.Threshold=INFO

（2）、使用xml文件的形式

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n"/>
</layout>
</appender>

<appender name="DEBUG" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="D:/temp/debug.log"/>
<param name="Append" value="true"/>
<param name="MaxFileSize" value="500KB"/>
<param name="MaxBackupIndex" value="2"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMax" value="DEBUG" />
<param name="LevelMin" value="DEBUG" />
</filter>
</appender>

<appender name="INFO" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="D:/temp/info.log"/>
<param name="Append" value="true"/>
<param name="MaxFileSize" value="500KB"/>
<param name="MaxBackupIndex" value="2"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMax" value="INFO" />
<param name="LevelMin" value="INFO" />
</filter>
</appender>
<!-- 根logger的设置-->
<root>
<appender-ref ref="STDOUT"/>
<appender-ref ref="DEBUG"/>
<appender-ref ref="INFO"/>
</root>
</log4j:configuration>
3、每天建立新日志文件

log4j.rootLogger=INFO,A1,A2

#log4j.rootLogger=INFO, A2
# A1 is set to be a ConsoleAppender which outputs to System.out.
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n
# A1 uses PatternLayout.
#log4j.appender.A2=org.apache.log4j.ConsoleAppender
#log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A2.File=${basketballGM.root}/logs/back.log
log4j.appender.A2.DatePattern='.'yyyy-MM-dd
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.Append=true
log4j.appender.A2.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}[%-10C] %m %n