C# 添加log4net日誌

1、添加log4net的Nuget包

2、在Web.config或者App.config文件中添加log4net配置

 

代碼：

 

<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />

<log4net>
    <!-- OFF, FATAL, ERROR, WARN, INFO, DEBUG, ALL -->
    <!-- Set root logger level to ERROR and its appenders -->
    <!--<root> <level value="ALL" /> <appender-ref ref="SysAppender" /> </root> -->

    <!--Error日誌-->
    <logger name="LogError">
      <level value="ERROR" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>

    <!--Info日誌-->
    <logger name="LogInfo">
      <level value="INFO" />
      <appender-ref ref="InfoAppender" />
    </logger>

    <!--錯誤日誌-->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="log\\LogError\\" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <datePattern value="&quot;Logs_&quot;yyyyMMdd&quot;.txt&quot;" />
      <staticLogFileName value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <!--每條日誌末尾的文字說明-->
        <!--輸出格式-->
        <!--樣例：2008-03-26 13:42:32,111 [10] INFO Log4NetDemo.MainClass [(null)] - info-->
        <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
      </layout>
    </appender>

    <!--Info日誌-->
    <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="Log\\LogInfo\\" />
      <param name="AppendToFile" value="true" />
      <param name="StaticLogFileName" value="false" />
      <param name="DatePattern" value="&quot;Logs_&quot;yyyyMMdd&quot;.txt&quot;" />
      <param name="RollingStyle" value="Date" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%d [%t] %-5p %c - %m%n" />
      </layout>
    </appender>
  </log4net>

 

 3、在Global.asax全局文件中設置log4net使用的配置文件

代碼：

log4net.Config.XmlConfigurator.Configure(new System.IO.FileInfo(Server.MapPath("~/Web.config")));

4、爲了方便調用能夠加個Help類

public class Logger { public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("LogInfo"); public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("LogError"); /// <summary>
        /// 記錄Info日誌 /// </summary>
        /// <param name="info"></param>
        public static void Info(string info) { if (loginfo.IsInfoEnabled) { loginfo.Info(info); } } /// <summary>
        /// 記錄Error日誌 /// </summary>
        /// <param name="errorMsg"></param>
        /// <param name="ex"></param>
        public static void ErrorLog(string errorMsg, Exception ex = null) { if (logerror.IsErrorEnabled) { logerror.Error(errorMsg, ex); } } }

接下來就能夠使用了