前言:
此时我们对“aspnetmvc”大体比较着重,兄弟们都想要分析一些“aspnetmvc”的相关内容。那么小编在网络上网罗了一些有关“aspnetmvc””的相关文章,希望你们能喜欢,咱们一起来了解一下吧!1、创建一个新的ASP.NET Core项目
在Visual Studio 2019中。需要版本16.8+
2、手动或使用NuGet在csproj中添加依赖项
安装最新版本:
NLog.Web.AspNetCore 4.9+如有可能,更新NLog软件包
在csproj中:
<ItemGroup> <PackageReference Include="NLog.Web.AspNetCore" Version="4.9.3" /> <PackageReference Include="NLog" Version="4.7.6" /></ItemGroup>
3、创建一个nlog.config文件。
在项目的根目录中创建nlog.config(全部小写)文件。
我们使用以下示例:
<?xml version="1.0" encoding="utf-8" ?><nlog xmlns="; xmlns:xsi="; autoReload="true" internalLogLevel="Info" internalLogFile="c:\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="c:\temp\nlog-all-${shortdate}.log" layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}" /> <!-- another file log, only own logs. Uses some ASP.NET core renderers --> <target xsi:type="File" name="ownFile-web" fileName="c:\temp\nlog-own-${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="System.Net.Http.*" maxlevel="Info" final="true" /> <!-- BlackHole without writeTo --> <logger name="*" minlevel="Trace" writeTo="ownFile-web" /> </rules></nlog>
请注意,如果删除所有其他LoggingProviders(如控制台)并且仅使用NLog,则可能必须特别注意Hosting Lifetime Startup Messages。因为这可能导致托管环境(Visual Studio / Docker / Azure容器)看不到已启动的应用程序。
4、更新program.cs
更新program.cs
using Microsoft.AspNetCore.Hosting;using Microsoft.Extensions.Hosting;using Microsoft.Extensions.Logging;using System;using NLog.Web;namespace ASP.NET_Core_5_NLog_Example{ public class Program { public static void Main(string[] args) { var logger = NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger(); try { logger.Debug("init main"); CreateHostBuilder(args).Build().Run(); } catch (Exception exception) { //NLog: catch setup errors logger.Error(exception, "Stopped program because of exception"); throw; } finally { // Ensure to flush and stop internal timers/threads before application-exit (Avoid segmentation fault on Linux) NLog.LogManager.Shutdown(); } } public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); }) .ConfigureLogging(logging => { logging.ClearProviders(); logging.SetMinimumLevel(LogLevel.Trace); }) .UseNLog(); // NLog: Setup NLog for Dependency injection }}
5、配置appsettings.json / appsettings.Development.json
中指定的日志记录配置appsettings.json会覆盖对的任何调用SetMinimumLevel。因此"Default":,请根据您的需要删除或正确调整它。
{ "Logging": { "IncludeScopes": false, "LogLevel": { "Default": "Trace", "Microsoft": "Warning", "Microsoft.Hosting.Lifetime": "Information" } }, "AllowedHosts": "*"}
切记还要更新任何特定于环境的配置,以免引起任何意外。前任appsettings.Development.json
6、写日志
将ILogger注入您的控制器中:
using Microsoft.Extensions.Logging;public class HomeController : Controller{ private readonly ILogger<HomeController> _logger; public HomeController(ILogger<HomeController> logger) { _logger = logger; _logger.LogDebug(1, "NLog injected into HomeController"); } public IActionResult Index() { _logger.LogInformation("Hello, this is the index!"); return View(); }
7、示例输出
启动ASP.NET Core网站时,我们得到两个文件:
2020-12-29 16:47:02.5291||DEBUG|ASP.NET_Core_5_NLog_Example.Program|init main |url: |action: 2020-12-29 16:47:03.5943|1|DEBUG|ASP.NET_Core_5_NLog_Example.Controllers.HomeController|NLog injected into HomeController |url: : Index2020-12-29 16:47:03.5943||INFO|ASP.NET_Core_5_NLog_Example.Controllers.HomeController|Hello, this is the index! |url: : Index
2020-12-29 16:47:02.5291||DEBUG|ASP.NET_Core_5_NLog_Example.Program|init main 2020-12-29 16:47:03.5260||INFO|Microsoft.Hosting.Lifetime|Application started. Press Ctrl+C to shut down. 2020-12-29 16:47:03.5260||INFO|Microsoft.Hosting.Lifetime|Hosting environment: Development 2020-12-29 16:47:03.5260||INFO|Microsoft.Hosting.Lifetime|Content root path: D:\nlog\NLog.Web\examples\ASP.NET Core 5\ASP.NET Core 5 NLog Example 2020-12-29 16:47:03.5943|1|DEBUG|ASP.NET_Core_5_NLog_Example.Controllers.HomeController|NLog injected into HomeController 2020-12-29 16:47:03.5943||INFO|ASP.NET_Core_5_NLog_Example.Controllers.HomeContr
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