关于.Net 6 添加NLog的方法

.Net项目中关于日志的组件还是很多的，包括log4net,Nlog,以及.net core 框架自带的Logging，今天就简单介绍一下Nlog，对.Net 6 添加NLog相关知识感兴趣的朋友一起看看吧

创建一个.Net 6 Demo项目

引入NLog包

添加项目配置文件nlog.config

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"

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