<?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">    <!-- 启用.net core的核心布局渲染器 -->    <extensions>        <add assembly="NLog.Web.AspNetCore" />    </extensions>    <!-- 写入日志的目标配置 -->    <targets>        <!-- 调试  -->        <target xsi:type="File" name="debug" fileName="logs/debug-${shortdate}.log" layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />        <!-- 警告  -->        <target xsi:type="File" name="warn" fileName="logs/warn-${shortdate}.log" layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />        <!-- 错误  -->        <target xsi:type="File" name="error" fileName="logs/error-${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>    <!-- 映射规则 -->    <rules>        <!-- 调试  -->        <logger name="*" minlevel="Trace" maxlevel="Debug" writeTo="debug" />        <!--跳过不重要的微软日志-->        <logger name="Microsoft.*" maxlevel="Info" final="true" />        <!-- 警告  -->        <logger name="*" minlevel="Info" maxlevel="Warn" writeTo="warn" />        <!-- 错误  -->        <logger name="*" minlevel="Error" maxlevel="Fatal" writeTo="error" />    </rules></nlog>

    public class Program    {        public static void Main(string[] args)        {            //这里添加Nlog            var logger = NLog.Web.NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();            try            {                //测试Nlog日志输出                logger.Debug("init main");                CreateHostBuilder(args).Build().Run();            }            catch (Exception exception)            {                logger.Error(exception, "Stopped program because of exception");                throw;            }            finally            {                NLog.LogManager.Shutdown();            }        }        public static IHostBuilder CreateHostBuilder(string[] args) =>            Host.CreateDefaultBuilder(args)                .ConfigureWebHostDefaults(webBuilder =>                {                    webBuilder.UseStartup<Startup>();                }).UseNLog();//添加你的日志组件    }

using FranchiseeInterface.Franchisee;using Microsoft.AspNetCore.Hosting;using Microsoft.AspNetCore.Http;using Microsoft.Extensions.Logging;using Newtonsoft.Json;using System;using System.Collections.Generic;using System.Linq;using System.Threading.Tasks;namespace FranchiseeApi.Helper.Middlewares{    public class ExceptionMiddlewares    {        private readonly RequestDelegate next;        private IHostingEnvironment environment;        //Nlog构造方法注入        private readonly ILogger<ExceptionMiddlewares> _logger;        public ExceptionMiddlewares(RequestDelegate next, IHostingEnvironment environment, ILogger<ExceptionMiddlewares> logger)        {            _logger = logger;            this.next = next;            this.environment = environment;        }        public async Task Invoke(HttpContext context)        {            try            {                await next.Invoke(context);                var features = context.Features;            }            catch (Exception e)            {                await HandleException(context, e);            }        }        private async Task HandleException(HttpContext context, Exception e)        {            context.Response.StatusCode = 500;            context.Response.ContentType = "text/json;charset=utf-8;";            string error = "";            if (environment.IsDevelopment())            {                var json = new { message = e.Message };                //// log.Error(json);                //_logger.LogDebug("这里是homeController构造方法");                //_logger.Log(LogLevel.Information,"测试");                _logger.LogError(JsonConvert.SerializeObject(json));                error = JsonConvert.SerializeObject(json);            }            else                error = "抱歉，出错了";            await context.Response.WriteAsync(error);        }    }}