1).添加nlog.config配置文件

<?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="Warn"

internalLogFile="internal-nlog.txt">

<!-- Load the ASP.NET Core plugin -->

<extensions>

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

</extensions>

<!-- define various log targets -->

<targets>

<!-- write logs to file -->

<target xsi:type="File" name="allfile" fileName="nlog-all-${shortdate}.log"

layout="${longdate}|${logger}|${uppercase:${level}}|${message} ${exception}" />

<target xsi:type="File" name="ownFile-web" fileName="nlog-own-${shortdate}.log"

layout="${longdate}|${logger}|${uppercase:${level}}|  ${message} ${exception}" />

<target xsi:type="Null" name="blackhole" />

</targets>

<rules>

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

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

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

<logger name="Microsoft.*" minlevel="Trace" writeTo="blackhole" final="true" />

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

</rules>

</nlog>

2).使用NuGet安装相关日志组件

NLog.Extensions.Logging

NLog.Web.AspNetCore

3).将nlog.config文件配置到环境中并进行日志注册

public void Configure(IApplicationBuilder app, IHostingEnvironment env,ILoggerFactory loggerFactory)

{

//添加日志配置路径

env.ConfigureNLog("nlog.config");

//注册WEB日志

loggerFactory.AddNLog();

app.AddNLogWeb();

//注册控制台日志

loggerFactory.AddConsole(Configuration.GetSection("Logging")); //控制台日志添加

loggerFactory.AddDebug();

if (env.IsDevelopment())

{

app.UseDeveloperExceptionPage();

}

else

{

app.UseExceptionHandler("/Home/Error");

}

//添加静态文件中间件

app.UseStaticFiles();

//异常中间件

app.UseExceptionHandler();

app.UseMvc(routes =>

{

//默认路由

routes.MapRoute(

name: "default",

template: "{controller=Home}/{action=Login}");

});

}

4).使用日志记录方法