netcore 使用log4net

一、安装log4net包

         nuget：log4net、Microsoft.Extensions.Logging.Log4Net.AspNetCore

二、创建配置文件、写入配置

     ①、创建配置文件

②、写入配置

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
    <file value="Log/Info/" />
    <appendToFile value="true" />
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <rollingStyle value="Date" />
    <maxSizeRollBackups value="10" />
    <maximumFileSize value="10MB" />
    <staticLogFileName value="false" />
    <encoding  value="utf-8" />
    <DatePattern value="yyyy-MM-dd'.txt'"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date  %-5level  - %message%newline" />
    </layout>
    <!--最大等级【控制等级Info日志只写入Info日志】-->
    <filter type="log4net.Filter.LevelRangeFilter">
      <LevelMax value="Info" />
    </filter>
  </appender>

  <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
    <file value="Log/Error/" />
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <appendToFile value="true" />
    <rollingStyle value="Date" />
    <maxSizeRollBackups value="10" />
    <maximumFileSize value="10MB" />
    <staticLogFileName value="false" />
    <encoding  value="utf-8" />
    <DatePattern value="yyyy-MM-dd'.txt'"/>
    <!--最大等级【控制等级Info日志只写入Error日志】-->
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date  %-5level  - %message%newline" />
    </layout>
    <filter type="log4net.Filter.LevelRangeFilter">
      <LevelMin value="Error" />
    </filter>
  </appender>

  <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date %-5level - %message%newline" />
    </layout>
  </appender>

  <!--配置记录相应介质中去-->
  <root>
    <!--最小等级、对应Appender-->
    <level value="Error" />
    <appender-ref ref="ErrorAppender" />
    <!--最小等级、对应Appender-->
    <level value="Info"/>
    <appender-ref ref="InfoAppender" />
  </root>
</log4net>

三、注册log4net

 四、使用log4net