log4net根据日志类型写入到不同的文件中

 <?xml version="1.0"?>
 <configuration>
   <configSections>
     <!--log4net配置安装-->
     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
   </configSections>
   <log4net>
     <!--记录器root可以被其他继承-->
     <root>
       <level value="All" />
       <appender-ref ref="LogFileAppender" />
       <appender-ref ref="ErrorFileAppender"/>
     </root>

     <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" LEVEL="INFO">
       <param name="File" value="Logs\info\"/>
       <param name="AppendToFile" value="true"/>
       <param name="DatePattern" value="yyyy-MM-dd.'.txt'"/>
       <param name="RollingStyle" value="Date"/>
       <param name="StaticLogFileName" value="false"/>
       <layout type="log4net.Layout.PatternLayout">
         <param name="ConversionPattern" value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 类：%logger property:[%property{NDC}] - 描述：%message%newline" />
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
         <param name="LevelMin" value="INFO" />
         <param name="LevelMax" value="INFO" />
       </filter>
     </appender>

     <appender name="ErrorFileAppender" type="log4net.Appender.RollingFileAppender" LEVEL="ERROR">
       <param name="File" value="Logs\error\"/>
       <param name="AppendToFile" value="true"/>
       <param name="DatePattern" value="yyyy-MM-dd.'.txt'"/>
       <param name="RollingStyle" value="Date"/>
       <param name="StaticLogFileName" value="false"/>
       <layout type="log4net.Layout.PatternLayout">
         <param name="ConversionPattern" value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 类：%logger property:[%property{NDC}] - 描述：%message%newline"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
         <param name="LevelMin" value="ERROR" />
         <param name="LevelMax" value="ERROR" />
       </filter>
     </appender>

   </log4net>
   <startup>
     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
   </startup>
 </configuration>