今天小编给大家分享一下.Net 6怎么添加NLog的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
创建一个.Net 6 Demo项目
引入NLog包
添加项目配置文件nlog.config
<?xml version="1.0" encoding="utf-8"?><nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xsi:schemaLocation="NLog NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true" > <!-- the targets to write to --> <targets> <!--单个文件过大会导致写入效率下降，可配置单个文件的最大容量--> <target name="File" xsi:type="AsyncWrapper" queueLimit="5000" overflowAction="Discard"> <target xsi:type="File" fileName="${basedir}/logs/${shortdate}.log" layout="${date:yyyy-MM-dd HH\:mm\:ss} ${level:uppercase=true} ${event-context:item=Action} ${message} ${event-context:item=Amount} ${stacktrace}" archiveAboveSize="10240" archiveEvery="Day" /> </target> <!-- write logs to file --> <!--<target xsi:type="File" name="logfile" fileName="c:\temp\console-example.log" layout="${longdate}|${level}|${message} |${all-event-properties} ${exception:format=tostring}" />--> <!--<target xsi:type="Console" name="logconsole" layout="${longdate}|${level}|${message} |${all-event-properties} ${exception:format=tostring}" />--> </targets> <!-- rules to map from logger name to target --> <rules> <!--<logger name="*" levels="Debug,Info,Warn,Error" writeTo="File" />--> <logger name="*" minlevel="Debug" maxlevel="Error" writeTo="File" /> </rules></nlog>layout布局：
${longdate} 格式：2022-01-21 17:00:28.4860
后面的毫秒不是我想要的，可以自定义：date:yyyy-MM-dd HH\:mm\:ss
NLog等级
Trace：最常见的记录信息，一般是普通输出
Debug：同样是记录信息，出现的频率比Trace少，一般是调试程序
Info：信息类型的消息
Warn：警告消息
Error：错误消息
自上而下，等级递增
指定特定等级：level="Warn"
指定多个等级：levels="Debug,Info" 以逗号分隔
指定等级范围：minlevel="Info" maxlevel="Error"
<rules> <!--<logger name="*" levels="Debug,Info,Warn,Error" writeTo="File" />--> <logger name="*" minlevel="Debug" maxlevel="Error" writeTo="File" /></rules>添加工具类 Logger
using NLog;namespace TestNet6.Utilities{ public class Logger { NLog.Logger _logger { get; set; } private Logger(NLog.Logger logger) { _logger = logger; } public Logger(string name) : this(LogManager.GetLogger(name)) public static Logger Default { get; private set; } static Logger() Default = new Logger(LogManager.GetCurrentClassLogger()); #region Dedub public void Debug(string msg, params object[] args) _logger.Debug(msg, args); public void Debug(string msg, Exception e) _logger.Debug(e, msg); #endregion #region Info public void Info(string msg, params object[] args) _logger.Info(msg, args); public void Info(string msg, Exception e) _logger.Info(e, msg); #region Trace public void Trace(string msg, params object[] args) _logger.Trace(msg, args); public void Trace(string msg, Exception e) _logger.Trace(e, msg); #region Warn public void Warn(string msg, params object[] args) _logger.Warn(msg, args); public void Warn(string msg, Exception e) _logger.Warn(e, msg); #region Error public void Error(string msg, params object[] args) _logger.Error(msg, args); public void Error(string msg, Exception e) _logger.Error(e, msg); }}添加测试Controller
using Microsoft.AspNetCore.Mvc;using TestNet6.Utilities;namespace TestNet6.Controllers{ public class TestController : Controller { public ActionResult Index() { return View(); } public string Test() { Logger.Default.Info("", Request); return "Test String"; } }}最后为了路由有效，还需要添加路由映射
var builder = WebApplication.CreateBuilder(args);// Add services to the container.builder.Services.AddRazorPages();var app = builder.Build();// Configure the HTTP request pipeline.if (!app.Environment.IsDevelopment()){ app.UseExceptionHandler("/Error"); // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts. app.UseHsts();}app.UseHttpsRedirection();app.UseStaticFiles();app.UseRouting();app.UseAuthorization();app.MapRazorPages();//添加路由映射app.MapControllerRoute(name: "default", pattern: "{controller=Home}/{action=Index}/{id?}");app.Run();OK，运行测试
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