自己動手，豐衣足食

1、config文件

<?xml version="1.0" encoding="utf-8" ?>
<!--日誌記錄配置-->
<log4net debug="true">
  <!--Level級別：OFF<DEBUG<INFO<WARN<ERROR<FATAL<ALL-->
  <!--配置輸出介質-->
  <appender name="Console" type="log4net.Appender.ConsoleAppender">
    <target value="
 
Console.Error"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%d [%t] %5l (%F:%L) - %m%n"/>
    </layout>
  </appender>
  <!--配置異常的文件輸出介質-->
  <appender name="SystemErrorLog" type="log4net.Appender.RollingFileAppender,log4net">
    <!--<file value="
 
log/error/SYSTEM_ERROR_LOG"/>-->
    <file value="log/error/SYSTEM_ERROR_LOG"/>
    
    <appendToFile value="true"/>
    <datePattern value="yyyyMMdd&quot;.log&quot;"/>
    <StaticLogFileName value="false"/>
    <maxSizeRollBackups value="100"/>
    <rollingStyle value="
 
Date"/>
    <encoding value="UTF-8"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%-30d{yyyy/MM/dd zzz HH:mm:ss} [%t] %-5l [%ndc] - %m %e %n"/>
    </layout>
  </appender>
  <!--定義系統警告日誌輸出介質warn-->
  <appender name="SystemWarn" type="log4net.Appender.RollingFileAppender,log4net">
    <file value="log/warn/SYSTEM_WARN_LOG"/>
    <appendToFile value="true"/>
    <datePattern value="yyyyMMdd&quot;.log&quot;"/>
    <StaticLogFileName value="false"/>
    <maxSizeRollBackups value="100"/>
    <rollingStyle value="Date"/>
    <encoding value="UTF-8"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%-30d{yyyy/MM/dd zzz HH:mm:ss} [%t] %-5l %l [%ndc] - %m %e %n"/>
    </layout>
  </appender>
  <!--定義通知信息日誌輸出介質-->
  <appender name="SystemInforLog" type="log4net.Appender.RollingFileAppender,log4net">
    <file value="log/infor/SYSTEM_INFOR_LOG"/>
    <appendToFile value="true"/>
    <datePattern value="yyyyMMdd&quot;.log&quot;"/>
    <StaticLogFileName value="false"/>
    <maxSizeRollBackups value="100"/>
    <rollingStyle value="Date"/>
    <encoding value="UTF-8"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%-30d{yyyy/MM/dd HH:mm:ss} %m %l %n"/>
    </layout>
  </appender>
  <!--定義ADO方式記錄系統日誌-->
  <!--<appender name="AdminLogger" type="log4net.Appender.ADONetAppender">
    <bufferSize value="20" />
    <connectionType value="System.Data.SqlClient.SqlConnection,System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    <connectionString value="Data Source=.;Initial Catalog=ACM;User ID=sa;Password=******" />
    <commandText value="INSERT INTO [tb_AdminLog]([ActionType],[AdminID],[Event],[ActionLevel],[CreatedOn],[IP],[Msg]) VALUES(@ActionType,@AdminID,@Event,@ActionLevel,@CreatedOn,@IP,@Msg)" />
    <parameter>
      <parameterName value="@ActionType" />
      <dbType value="String" />
      <size value="2" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{ActionType}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@AdminID" />
      <dbType value="Int32" />
      <size value="10" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{AdminID}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@Event" />
      <dbType value="String" />
      <size value="20" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{Event}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@ActionLevel" />
      <dbType value="String" />
      <size value="10" />
      <layout type="log4net.Layout.PatternLayout" >
        <conversionPattern value="%property{ActionLevel}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@CreatedOn" />
      <dbType value="DateTime" />
      <layout type="log4net.Layout.RawTimeStampLayout" />
    </parameter>
    <parameter>
      <parameterName value="@IP" />
      <dbType value="String" />
      <size value="15" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{IP}" />
      </layout>
    </parameter>
    <parameter>
      <parameterName value="@Msg" />
      <dbType value="String" />
      <Size value="1000"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%property{Msg}" />
      </layout>
    </parameter>
  </appender>-->
  <!--根日誌對象-->
  <root>
    <!--配置根日誌對象的訪問級別-->
    <level value="DEBUG"/>
    <!--配置根日誌對象的記錄器-->
    <appender-ref ref="Console"/>
    <appender-ref ref="SystemErrorLog"/>
  </root>
  <!--錯誤信息記錄器-->
  <logger name="SystemErrorLogger">
    <level value="ERROR"/>
    <appender-ref ref="SystemErrorLog"/>
  </logger>
  <!--系統警告信息記錄器-->
  <logger name="SystemWarn">
    <level value="WARN"/>
    <appender-ref ref="SystemWarn"/>
  </logger>
  <!--系統通知信息記錄器-->
  <logger name="SystemInforLog" additivity="false">
    <level value="INFO"/>
    <appender-ref ref="SystemInforLog"/>
  </logger>
  <!--系統通知信息記錄器-->
  <logger name="AdminLogger" additivity="false">
    <level value="INFO"/>
    <appender-ref ref="AdminLogger"/>
  </logger>
</log4net>

2、代碼

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace GCommon
{
    public class logUtil
    {
        /// <summary>
        /// 系統錯誤日誌
        /// </summary>
        public static readonly log4net.ILog SystemErrorLogger = log4net.LogManager.GetLogger("SystemErrorLogger");

        /// <summary>
        /// 系統通知
        /// </summary>
        public static readonly log4net.ILog SystemInforLogger = log4net.LogManager.GetLogger("SystemInforLog");

        /// <summary>
        /// 記錄錯誤日誌
        /// </summary>
        /// <param name="message"></param>
        /// <param name="ex"></param>
        public static void Error(object message, Exception ex)
        {
            SystemErrorLogger.Error(message,ex);
        }
        /// <summary>
        /// 記錄錯誤日誌
        /// </summary>
        /// <param name="message"></param>
        public static void Error(object message)
        {
            SystemErrorLogger.Error(message);
        }
        /// <summary>
        /// 錯誤日誌
        /// </summary>
        /// <param name="format"></param>
        /// <param name="parameters"></param>
        public static void ErrorFormat(string format, params object[] parameters)
        {
            SystemErrorLogger.ErrorFormat(format,parameters);
        }
        /// <summary>
        /// 信息日誌
        /// </summary>
        /// <param name="message"></param>
        public static void Info(object message)
        {
            SystemInforLogger.Info(message);
        }
        /// <summary>
        /// 信息日誌
        /// </summary>
        /// <param name="format"></param>
        /// <param name="parameters"></param>
        public static void Info(string format,params object[] parameters)
        {
            SystemInforLogger.InfoFormat(format,parameters);
        }
    }
}

3、ConfigFile

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

4、啟動

 protected void Application_Start(object sender, EventArgs e)
        {
            log4net.Config.XmlConfigurator.Configure();
        }

log4net日誌記錄