如何把 log4net.config 文件删除, 改成代码实现

如何把 log4net.config 文件改成代码?

这样在编写winform或者其他客户端的时候就省去了一个配置文件

分享下我常用的log4net.config 配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <!--<configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
    </configSections>-->
  <log4net>
    <!--console-->
    <!--<appender name="RollingFileAppender_Debug" type="log4net.Appender.ManagedColoredConsoleAppender">
      <encoding value="utf-8"/>
      <mapping>
        <level value="ERROR" />
        <foreColor value="Red" />
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <foreColor value="Gray" />
      </mapping>
      <mapping>
        <level value="Info" />
        <foreColor value="Yellow" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" />
      </layout>
    </appender>-->

    <!-- RollingFileAppender to log the messages that their level are DEBUG and INFO -->
    
    <appender name="RollingFileAppender_Debug" type="log4net.Appender.RollingFileAppender">
      <file value="Logs/Debug/" />
      <encoding value="utf-8"/>
      <appendToFile value="true" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="100MB" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyy-MM-dd.'log'" />
      <staticLogFileName value="false" />
      <!-- Set filter,LevelRangeFilter -->
      <filter type="log4net.Filter.LevelRangeFilter">
        <levelMin value="INFO" />
        <levelMax value="INFO" />
      </filter>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[级别：%p]%n[时间：%d]%n[类名：%c]%n[方法：%M]%n[行号：%L]%n[内容：%m]%n------------------------------------------------------------------------------------------------%n%n" />
      </layout>
    </appender>


    <!-- RollingFileAppender to log the messages that their level are DEBUG and INFO -->
    <appender name="RollingFileAppender_Info" type="log4net.Appender.RollingFileAppender">
      <file value="Logs/Info/" />
      <encoding value="utf-8"/>
      <appendToFile value="true" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="100MB" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyy-MM-dd.'log'" />
      <staticLogFileName value="false" />
      <!-- Set filter,LevelRangeFilter -->
      <filter type="log4net.Filter.LevelRangeFilter">
        <levelMin value="INFO" />
        <levelMax value="INFO" />
      </filter>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%d]%m%n" />
      </layout>
    </appender>

    <!-- RollingFileAppender to log the messages that their level are WARN or higher -->
    <appender name="RollingFileAppender_Error" type="log4net.Appender.RollingFileAppender">
      <file value="Logs/Error/" />
      <encoding value="utf-8"/>
      <appendToFile value="true" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="20MB" />
      <rollingStyle value="Composite" />
      <datePattern value="yyyy-MM-dd.'log'" />
      <staticLogFileName value="false" />
      <!-- Set filter,LevelRangeFilter -->
      <filter type="log4net.Filter.LevelRangeFilter">
        <levelMin value="ERROR" />
        <levelMax value="FATAL" />
      </filter>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[级别：%p]%n[时间：%d]%n[类名：%c]%n[方法：%M]%n[行号：%L]%n[内容：%m]%n[异常：%exception]%n------------------------------------------------------------------------------------------------%n%n" />
      </layout>
    </appender>

    <!-- Setup the root category, add the appenders and set the default level -->
    <root>
      <level value="ALL" />
      <!--<appender-ref ref="RollingFileAppender_Debug" />-->
      <appender-ref ref="RollingFileAppender_Info" />
      <appender-ref ref="RollingFileAppender_Error" />
    </root>
  </log4net>
</configuration>

只需要在程序启动的时候执行下下面的代码,其他代码不变就可以直接使用了.

var hierarchy = (Hierarchy)LogManager.GetRepository();
var infoAppender = new RollingFileAppender
{
    Name = "RollingFileAppender_Info",
    File = $"Logs/Info/",
    Encoding = System.Text.Encoding.UTF8,
    AppendToFile = true,
    MaxSizeRollBackups = 10,
    MaximumFileSize = "10MB",
    RollingStyle = RollingFileAppender.RollingMode.Composite,
    DatePattern = "yyyy-MM-dd'.log'",
    StaticLogFileName = false
};

var infoFilter = new LevelRangeFilter
{
    LevelMin = Level.Info,
    LevelMax = Level.Info
};
infoAppender.AddFilter(infoFilter);
var infoLayout = new PatternLayout
{
    ConversionPattern = "[%date]%message%newline"
};
infoLayout.ActivateOptions();

infoAppender.Layout = infoLayout;
infoAppender.ActivateOptions();

hierarchy.Root.AddAppender(infoAppender);

var errorAppender = new RollingFileAppender
{
    Name = "RollingFileAppender_Error",
    File = $"Logs/Error/",
    Encoding = System.Text.Encoding.UTF8,
    AppendToFile = true,
    MaxSizeRollBackups = 10,
    MaximumFileSize = "20MB",
    RollingStyle = RollingFileAppender.RollingMode.Composite,
    DatePattern = "yyyy-MM-dd'.log'",
    StaticLogFileName = false
};

var errorFilter = new LevelRangeFilter
{
    LevelMin = Level.Error,
    LevelMax = Level.Fatal
};
errorAppender.AddFilter(errorFilter);
var errorLayout = new PatternLayout
{
    ConversionPattern = "[级别：%p]%n[时间：%d]%n[类名：%c]%n[方法：%M]%n[行号：%L]%n[内容：%m]%n[异常：%exception]%n------------------------------------------------------------------------------------------------%n%n"
};
errorLayout.ActivateOptions();

errorAppender.Layout = errorLayout;
errorAppender.ActivateOptions();
hierarchy.Root.AddAppender(errorAppender);

BasicConfigurator.Configure();

private static readonly ILog _logger  = LogManager.GetLogger("YOUR CLASS NAME");

_logger.Info("你好");