C# log4net日志

引用log4net.dll库

[log4net.dll库下载地址][1]

AssemblyInfo.cs

最后一行添加以下代码:

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

log4net.config

注意把这个文件的属性”复制到输出目录”值改成”始终复制”, 否则会不生效

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>

  <log4net>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <param name= "File" value= "D:\App_Log\servicelog\"/>
      <param name= "AppendToFile" value= "true"/>
      <param name= "MaxSizeRollBackups" value= "10"/>
      <param name= "StaticLogFileName" value= "false"/>
      <param name= "DatePattern" value= "yyyy-MM-dd&quot;.read.log&quot;"/>
      <param name= "RollingStyle" value= "Date"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%date]-[%thread]-[%-p]-[%logger]-[%M] -> %message%newline" />
      </layout>
    </appender>

    <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="DEBUG" />
        <foreColor value="Red, HighIntensity" />
      </mapping>
      <mapping>
        <level value="DEBUG" />
        <foreColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%n%date{HH:mm:ss,fff} [%-5level] %m" />
      </layout>

      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="Info" />
        <param name="LevelMax" value="Fatal" />
      </filter>
    </appender>

    <root>
      <level value="all" />
      <appender-ref ref="ColoredConsoleAppender"/>
      <appender-ref ref="RollingLogFileAppender"/>
    </root>
  </log4net>
</configuration>

应用

private static ILog log = LogManager.GetLogger(typeof(Program));
[STAThread]
static void Main(string[] args)
{
    log.Info("info");
    log.Debug("Debug");
    log.Error("Error");
}