log4j中log.xml的配置

一、log優先級:debug,info,error,fatal;

    其中,常用info,警告但是不影響項目運行用error,異常信息用fatal;

二、配置：

<?xml version="1.0" encoding="utf-8" ?>  
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">  
<!--#log4j中有5級logger ,#FATAL 0 ,#ERROR 3 ,#WARN 4 ,#INFO 6 ,#DEBUG 7 -->  
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'> 

  <!-- 控制檯 -->
 <appender name="LOG.Console" class="org.apache.log4j.ConsoleAppender">  
        <layout class="org.apache.log4j.PatternLayout">  
            <param name="ConversionPattern"  value="%d{yyy-MM-dd HH:mm:ss}  %c {%L}:【%m】%n"></param>  
        </layout>  
        <!--過濾器設置輸出的級別-->  
        <filter class="org.apache.log4j.varia.LevelRangeFilter">  
            <param name="levelMin" value="INFO" />  
            <param name="levelMax" value="fatal" />  
            <param name="AcceptOnMatch" value="true" />  
        </filter>  
    </appender>  
	
<appender name="LOG.DEBUG" class="org.apache.log4j.DailyRollingFileAppender">  
<param name="File" value="../logs/debug.log" />  
<layout class="org.apache.log4j.PatternLayout">  
  <param name="ConversionPattern" value="%d{yyy-MM-dd HH:mm:ss}  %c {%F:%L} - %m%n" />  
</layout>  
 <filter class="org.apache.log4j.varia.LevelRangeFilter">     
           <param name="levelMin" value="debug" />     
           <param name="levelMax" value="fatal" />     
           <param name="AcceptOnMatch" value="true" />     
</filter>  
</appender> 
 
<appender name="LOG.INFO" class="org.apache.log4j.RollingFileAppender">  
<param name="File" value="../logs/info.log" />   
<layout class="org.apache.log4j.PatternLayout">  
  <param name="ConversionPattern" value="%d{yyy-MM-dd HH:mm:ss}  %c {%F:%L} - %m%n" />  
</layout>  
<filter class="org.apache.log4j.varia.LevelRangeFilter">     
  <param name="LevelMin" value="INFO" />     
  <param name="LevelMax" value="INFO" />     
</filter>  
</appender>  
  

<appender name="LOG.WARN" class="org.apache.log4j.RollingFileAppender">  
<param name="File" value="../logs/warn.log" />  
<layout class="org.apache.log4j.PatternLayout">  
  <param name="ConversionPattern" value="%d{yyy-MM-dd HH:mm:ss}  %c {%F:%L} - %m%n" />  
</layout>  
<filter class="org.apache.log4j.varia.LevelRangeFilter">     
  <param name="LevelMin" value="WARN" />     
  <param name="LevelMax" value="WARN" />     
</filter>  
</appender>  
  

<appender name="LOG.ERROR" class="org.apache.log4j.RollingFileAppender">  
<param name="File" value="../logs/error.log" />  
<layout class="org.apache.log4j.PatternLayout">  
  <param name="ConversionPattern" value="%d{yyy-MM-dd HH:mm:ss}  %c {%F:%L} - %m%n" />  
</layout>  
<filter class="org.apache.log4j.varia.LevelRangeFilter">     
  <param name="LevelMin" value="ERROR" />     
  <param name="LevelMax" value="ERROR" />     
</filter>  
</appender>  
 
<appender name="LOG.FATAL" class="org.apache.log4j.RollingFileAppender">  
<param name="File" value="../logs/fatal.log" />  
<layout class="org.apache.log4j.PatternLayout">  
  <param name="ConversionPattern" value="%d{yyy-MM-dd HH:mm:ss}  %c {%F:%L} - %m%n" />
</layout>  
<filter class="org.apache.log4j.varia.LevelRangeFilter">     
  <param name="LevelMin" value="FATAL" />     
  <param name="LevelMax" value="FATAL" />     
</filter>  

</appender>  
  

 
<root>  
<priority value="INFO"/>  
<appender-ref ref="LOG.Console" />
<appender-ref ref="LOG.DEBUG" /> 
<appender-ref ref="LOG.INFO" />  
<appender-ref ref="LOG.WARN" />  
<appender-ref ref="LOG.ERROR" />  
<appender-ref ref="LOG.FATAL" />  
</root>  
  
</log4j:configuration>  

三、輸出info信息：日誌會每天保存一次；