VisualStudio C#中使用Log4net输出不同类型的日志

20240514

By wdhuag

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目录

前言：

参考：

安装Log4net包并引用：

创建log4net.config配置文件，属性要设置始终复制：

在AssemblyInfo.cs中加入配置：

 初始化时读取配置：

调用：

一个简单的例子：

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前言：

Log4net输出不同类型的日志是基本操作，但是网上的举例注释太杂、实例太乱，这里做一个简化的例子。

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参考：

Apache log4net – Apache log4net Manual: Configuration - Apache log4net

https://www.cnblogs.com/boise/p/18002739

https://www.cnblogs.com/amylis_chen/p/6069487.html

log4net各种Filter使用_log4net.filter.denyallfilter-CSDN博客

https://www.cnblogs.com/cdaq/p/5052055.html

https://www.cnblogs.com/nanfei/p/6542275.html

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安装Log4net包并引用：

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创建log4net.config配置文件，属性要设置始终复制：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
 
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
 
  <!--站点日志配置部分-->
  <log4net>
 
    <!--root节点，只能有一个，是所有logger对象的父节点-->
    <root>
      <!--控制级别，由低到高: ALL|DEBUG|INFO|WARN|ERROR|FATAL|OFF-->
      <!--比如定义级别为INFO，则INFO级别向下的级别，比如DEBUG日志将不会被记录-->
      <!--如果没有定义LEVEL的值，则缺省为DEBUG-->
      <level value="All" />
      <!--Appenders节点，定义日志的输出方式-->
      <appender-ref ref="InfoAppender" />
      <appender-ref ref="WarnAppender" />
      <appender-ref ref="ErrorAppender" />
      <appender-ref ref="DebugAppender" />
      <appender-ref ref="FatalAppender" />
    </root>
 
    <!--自定义logger节点-->
    <logger name="StationLog">
      <level value="ALL" />
      <appender-ref ref="StationAppender" />
      <!--additivity用于设置是否继承root节点，为false时root的appender执行后不会再执行logger的appender-->
      <additivity value="true"/>
    </logger>
 
    <logger name="SnLog">
      <level value="ALL" />
      <appender-ref ref="SnAppender" />
      <additivity value="true"/>
    </logger>
 
    <logger name="MesLog">
      <level value="ALL" />
      <appender-ref ref="MesAppender" />
      <additivity value="true"/>
    </logger>
 
    <!--RollingFileAppender将日志以回滚文件的形式写到文件中-->
    <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
      <!--当RollingStyle为Composite或Date，这里设置文件名格式-->
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <!--多线程时采用最小锁定-->
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <!--文本编码-->
      <encoding value="utf-8" />
      <!--文件路径，运行文件目录.\  上一层..\-->
      <file type="log4net.Util.PatternString" value =".\日志\INFO\"/>
      <!--当文件存在时，是否在原文件上追加内容-->
      <appendToFile value="true" />
      <!--最大文件大小（可以使用KB，MB，GB为单位，默认为字节）-->
      <param name="MaxFileSize" value="10240"/>
      <!--	创建新文件的方式-->
      <rollingStyle value="Date" />
      <!--staticLogFileName为true时，RollingStyler的Date值将无效，且需要在file里指定文件名，所有日志都会记录在这个文件里-->
      <staticLogFileName value="false" />
      <!--最大行数-->
      <param name="MaxSizeRollBackups" value="100" />
      <!--日志输出格式，%m（message信息），%d{yyy-MM-dd HH:mm:ss }（datetime日期和格式），%r（runtime运行时间），%p（priority日志等级），%c（class类名），%t（thread线程id），%l（line行号），%f（file文件名）-->
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <!--日志等级过滤器，value参数大写-->
      <filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="INFO"/>
        <param name="levelMax" value="INFO"/>
      </filter>
      <!--输出日志信息中包含特殊字符串才输出，AcceptOnMatch条件满足是否输出打印-->
      <filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Info"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter>
      <!--Logger名称匹配才记录-->
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="" />
      </filter>
      <!--输出日志信息中包含特殊字符串才输出，不设置这个就无法过滤-->
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="WarnAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\INFO\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="INFO"/>
        <param name="levelMax" value="INFO"/>
      </filter>
      <filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Info"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter>
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\ERROR\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="ERROR"/>
        <param name="levelMax" value="ERROR"/>
      </filter>
      <filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Error"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter>
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="DebugAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\DEBUG\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="DEBUG"/>
        <param name="levelMax" value="DEBUG"/>
      </filter>
      <filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Debug"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter>
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="FatalAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\FATAL\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="FATAL"/>
        <param name="levelMax" value="FATAL"/>
      </filter>
      <filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Fatal"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter>
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="StationAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\Station\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <!--filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="INFO"/>
        <param name="levelMax" value="INFO"/>
      </filter-->
      <!--filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Info"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter-->
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="StationLog" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="SnAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\SN\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <!--filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="INFO"/>
        <param name="levelMax" value="INFO"/>
      </filter-->
      <!--filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Info"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter-->
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="SnLog" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
 
    <appender name="MesAppender" type="log4net.Appender.RollingFileAppender">
      <datePattern value="yyyyMM\\yyyyMMdd'.log'" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <encoding value="utf-8" />
      <file type="log4net.Util.PatternString" value =".\日志\MES\"/>
      <appendToFile value="true" />
      <param name="MaxFileSize" value="10240"/>
      <rollingStyle value="Date" />
      <staticLogFileName value="false" />
      <param name="MaxSizeRollBackups" value="100" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%m" />
      </layout>
      <!--filter type="log4net.Filter.LeveRangeFilter">
        <param name="levelMin" value="INFO"/>
        <param name="levelMax" value="INFO"/>
      </filter-->
      <!--filter type="log4net.Filter.StringMatchFilter">
        <param name="StringToMatch" value="Info"/>
        <param name="AcceptOnMatch" value="true"/>
      </filter-->
      <filter type="log4net.Filter.LoggerMatchFilter">
        <loggerToMatch value="MesLog" />
      </filter>
      <filter type="log4net.Filter.DenyAllFilter" />
    </appender>
  </log4net>
</configuration>

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在AssemblyInfo.cs中加入配置：

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

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 初始化时读取配置：

//读取Log4net配置文件，默认选择root节点
private static readonly ILog _RootLog = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
//private static readonly ILog _RootLog = LogManager.GetLogger("root");
//选择自定义节点
private static readonly ILog _StationLog = LogManager.GetLogger("StationLog");
private static readonly ILog _SnLog = LogManager.GetLogger("SnLog");
private static readonly ILog _MesLog = LogManager.GetLogger("MesLog");

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调用：

_RootLog.Info(text);
_RootLog.Warn(text);
_RootLog.Error(text);
_RootLog.Debug(text);
_RootLog.Fatal(text);
_StationLog.Info(text);
_SnLog.Info(text);
_MesLog.Info(text);

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一个简单的例子：

度盘，提取码：mbj1 

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