C# log4net配置

1、xml的编写（log4net配置）

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
 
  <log4net>
    <!--The config of System's default level - FATAL-->
    <appender name="FATAL" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/fatal"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite" />
      <param name="MaxSizeRollBackups" value="100"/>
      <param name="MaximumFileSize" value="1MB"/>
      <param name="StaticLogFileName" value="false"/>
      <param name="DatePattern" value="'.'yyyyMMdd'.log'"/>
      <encoding value="utf-8"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%p][%d{yyyy/MM/dd HH:mm:ss.fff}] [Thread=%thread] %X{ClassName}(%X{CodePosition}) %X{MethodName} - %m%n"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="FATAL"/>
        <param name="LevelMax" value="FATAL"/>
      </filter>
    </appender>

    <!--The config of System's default level - ERROR-->
    <appender name="ERROR" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/error"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite" />
      <param name="MaxSizeRollBackups" value="100"/>
      <param name="MaximumFileSize" value="1MB"/>
      <param name="StaticLogFileName" value="false"/>
      <param name="DatePattern" value="'.'yyyyMMdd'.log'"/>
      <param name="PrintFlag" value="true" />
      <encoding value="utf-8"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%p][%d{yyyy/MM/dd HH:mm:ss.fff}] [Thread=%thread] %X{ClassName}(%X{CodePosition}) %X{MethodName} - %m%n"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="ERROR"/>
        <param name="LevelMax" value="ERROR"/>
      </filter>
    </appender>

    <!--The config of System's default level - WARN-->
    <appender name="WARN" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/warn"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite" />
      <param name="MaxSizeRollBackups" value="100"/>
      <param name="MaximumFileSize" value="1MB"/>
      <param name="StaticLogFileName" value="false"/>
      <param name="DatePattern" value="'.'yyyyMMdd'.log'"/>
      <param name="PrintFlag" value="true" />
      <encoding value="utf-8"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%p][%d{yyyy/MM/dd HH:mm:ss.fff}] [Thread=%thread] %X{ClassName}(%X{CodePosition}) %X{MethodName} - %m%n"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="WARN"/>
        <param name="LevelMax" value="WARN"/>
      </filter>
    </appender>

    <!--The config of System's default level - INFO-->
    <appender name="INFO" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/info"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite" />
      <param name="MaxSizeRollBackups" value="100"/>
      <param name="MaximumFileSize" value="1MB"/>
      <param name="StaticLogFileName" value="false"/>
      <param name="DatePattern" value="'.'yyyyMMdd'.log'"/>
      <param name="PrintFlag" value="true" />
      <encoding value="utf-8"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%p][%d{yyyy/MM/dd HH:mm:ss.fff}] [Thread=%thread] %X{ClassName}(%X{CodePosition}) %X{MethodName} - %m%n"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="INFO"/>
        <param name="LevelMax" value="INFO"/>
      </filter>
    </appender>

    <!--The config of System's default level - DEBUG-->
    <appender name="DEBUG" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="log/debug"/>
      <param name="AppendToFile" value="true"/>
      <param name="RollingStyle" value="Composite" />
      <param name="MaxSizeRollBackups" value="100"/>
      <param name="MaximumFileSize" value="1MB"/>
      <param name="StaticLogFileName" value="false"/>
      <param name="DatePattern" value="'.'yyyyMMdd'.log'"/>
      <param name="PrintFlag" value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="[%p][%d{yyyy/MM/dd HH:mm:ss.fff}] [Thread=%thread] %X{ClassName}(%X{CodePosition}) %X{MethodName} - %m%n"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="DEBUG"/>
        <param name="LevelMax" value="DEBUG"/>
      </filter>
    </appender>

    <!--The basic config-->
    <root>
      <!--The whole switch.(Whose the level is greater than or equals to this will be display)-->

      <level value ="ALL"/>

      <!--The system's default level-->
      <appender-ref ref="DEBUG"/>     
      <appender-ref ref="INFO"/>
      <appender-ref ref="WARN"/>
      <appender-ref ref="ERROR"/>
      <appender-ref ref="FATAL"/>
      <appender-ref ref="AdoNetAppender_SqlServer"/>
    </root>
  </log4net>
</configuration>

 

2、在程序中加载log4net

在文件（AssemblyInfo.cs）中追加【[assembly: log4net.Config.XmlConfigurator(ConfigFile = "path", Watch = true)]】

或者

在页面中引用：XmlConfigurator.ConfigureAndWatch(new FileInfo(path));

 

3、页面中初始化Log4net

ILog log = log4net.LogManager.GetLogger(ClassType);