Log4net_簡單使用

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log4net 有四種主要的組件，分別是Logger（記錄器）, Repository（庫）, Appender（附著器）以及 Layout（布局）.第一步：Log4net的安裝

Install-Package log4net

第二步：Log4net的配置

log4net.config

注意：將log4net.config的屬性“複製到輸出目錄”設定為“始終複製”

<?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">      <!--日誌路徑-->      <param name= "File" value= "D:\App_Log\"/>      <!--是否是向檔案中追加日誌-->      <param name= "AppendToFile" value= "true"/>      <!--log保留天數-->      <param name= "MaxSizeRollBackups" value= "10"/>      <!--記錄檔名是否是固定不變的-->      <param name= "StaticLogFileName" value= "false"/>      <!--記錄檔名格式為:2008-08-31.log-->      <param name= "DatePattern" value= "yyyy-MM-dd".log""/>      <!--日誌根據日期滾動-->      <param name= "RollingStyle" value= "Date"/>      <layout type="log4net.Layout.PatternLayout">        <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n %loggername" />      </layout>    </appender>        <!-- 控制台前台顯示日誌 -->    <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">      <mapping>        <level value="ERROR" />        <foreColor value="Red, HighIntensity" />      </mapping>      <mapping>        <level value="Info" />        <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>      <!--(高) OFF > FATAL > ERROR > WARN > INFO > DEBUG > ALL (低) -->      <level value="all" />      <appender-ref ref="ColoredConsoleAppender"/>      <appender-ref ref="RollingLogFileAppender"/>    </root>  </log4net></configuration>

　　

第三步：調用

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.IO;using log4net;using log4net.Config;namespace Log4net{    class Program    {        static void Main(string[] args)        {            InitLog4Net();            var logger = LogManager.GetLogger(typeof(Program));            logger.Info("訊息");            logger.Warn("警告");            logger.Error("異常");            logger.Fatal("錯誤");            Console.ReadLine();        }        private static void InitLog4Net()        {            var logCfg = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "log4net.config");            XmlConfigurator.ConfigureAndWatch(logCfg);        }    }}

　　

Log4net_簡單使用