【log4net】配置

第一步在 AssemblyInfo  添加如下代码

第二步：在web.config添加如下代码：

<log4net>

    <root>
      <level value="all" />
      <appender-ref ref="INFOAppender" />
      <appender-ref ref="DEBUGAppender" />
      <appender-ref ref="WARNAppender" />
      <appender-ref ref="ERRORAppender" />
      <appender-ref ref="FATALAppender" />
      <appender-ref ref="ColoredConsole" />
      <appender-ref ref="TraceAppender" />
    </root>

    <appender name="INFOAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logs\info\" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyyMMdd'.log'" />
      <staticLogFileName value="false" />
      <maxSizeRollBackups value="100" />
      <maximumFileSize value="10MB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="INFO" />
        <param name="LevelMax" value="INFO" />
      </filter>
    </appender>
    <appender name="DEBUGAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logs\debug\" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyyMMdd'.log'" />
      <staticLogFileName value="false" />
      <maxSizeRollBackups value="100" />
      <maximumFileSize value="10MB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="DEBUG" />
        <param name="LevelMax" value="DEBUG" />
      </filter>
    </appender>
    <appender name="WARNAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logs\warn\" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyyMMdd'.log'" />
      <staticLogFileName value="false" />
      <maxSizeRollBackups value="100" />
      <maximumFileSize value="10MB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="WARN" />
        <param name="LevelMax" value="WARN" />
      </filter>
    </appender>
    <appender name="ERRORAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logs\error\" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyyMMdd'.log'" />
      <staticLogFileName value="false" />
      <maxSizeRollBackups value="100" />
      <maximumFileSize value="10MB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="ERROR" />
        <param name="LevelMax" value="ERROR" />
      </filter>
    </appender>
    <appender name="FATALAppender" type="log4net.Appender.RollingFileAppender">
      <file value="logs\fatal\" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyyMMdd'.log'" />
      <staticLogFileName value="false" />
      <maxSizeRollBackups value="100" />
      <maximumFileSize value="10MB" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="FATAL" />
        <param name="LevelMax" value="FATAL" />
      </filter>
    </appender>

    <!--调试模式，输出日志到控制台-->
    <appender name="ColoredConsole" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="Red, HighIntensity" />
        <!--<backColor value="Green" />-->
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <foreColor value="Yellow, HighIntensity" />
        <backColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <appender name="TraceAppender" type="log4net.Appender.TraceAppender">
      <layout type="log4net.Layout.PatternLayout">
        <param name="conversionPattern" value="%newline*******************************************%newline%date [%thread] %-5level %logger [%property{NDC}] - %message%newline*******************************************%newline" />
      </layout>
    </appender>

  </log4net>

相关的log文件添加在根目录中记得：

第三：添加如下代码：记得引入log4net 

 第四：

得到的效果如下：