<?xml version="1.0" encoding="utf-8" ?>

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"

      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

      autoReload="true"

      internalLogLevel="Info"

      internalLogFile="f:\temp\internal-nlog.txt">

  <!-- enable asp.net core layout renderers -->

  <extensions>

    <add assembly="NLog.Web.AspNetCore"/>

  </extensions>

  <!-- the targets to write to -->

  <targets>

    <!-- write logs to file  -->

    <target xsi:type="File" name="allfile" fileName="f:/temp/dwlogs/${level}/${shortdate}.log"

            layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}" />

    <!-- another file log, only own logs. Uses some ASP.NET core renderers -->

    <!--<target xsi:type="File" name="ownFile-web" fileName="f:/temp/dwlogs/${level}/${shortdate}.log"

            layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />-->

  </targets>

  <!-- rules to map from logger name to target -->

  <rules>

    <!--All logs, including from Microsoft-->

    <logger name="*" minlevel="Trace" writeTo="allfile" />

    <!--Skip non-critical Microsoft logs and so log only own logs-->

    <!--<logger name="Microsoft.*" maxlevel="Info" final="true" />-->

    <!-- BlackHole without writeTo -->

    <!--<logger name="*" minlevel="Trace" writeTo="ownFile-web" />-->

  </rules>

</nlog>

using System;

using System.Collections.Generic;

using System.Text;

namespace Dw.Util

{

    /// <summary>

    /// 日志记录

    /// </summary>

    public class NLogHelp

    {

        /// <summary>

        /// 输出操作日志到NLog

        /// </summary>

        public static void WriteInfo(string msg)

        {

            //写入操作日志

            const string mainLogger = "logger";

            var logger = NLog.LogManager.GetLogger(mainLogger);

            logger.Info(msg);

        }

        /// <summary>

        /// 输出错误日志到NLog

        /// </summary>

        public static void WriteError(string msg)

        {

            //写入操作日志

            const string mainLogger = "logger";

            var logger = NLog.LogManager.GetLogger(mainLogger);

            logger.Error(msg);

        }

        /// <summary>

        /// 输出异常日志到NLog

        /// </summary>

        public static void WriteDebug(string msg)

        {

            //写入操作日志

            const string mainLogger = "logger";

            var logger = NLog.LogManager.GetLogger(mainLogger);

            logger.Debug(msg);

        }

    }

}

NLogHelp.WriteInfo("用户开始访问。。。");

NLogHelp.WriteError("这里产生了错误。。。");

NLogHelp.WriteDebug("这里产生了BUG。。。");