1、安装引用NLog相关依赖
1)使用Nuget界面管理器
搜索"NLog.Web.AspNetCore"
,在列表中找到它,点击"安装"
,然后在搜索"NLog"
,点击"安装"
。
相关文档:VS(Visual Studio)中Nuget的使用
2)使用Package Manager命令安装
PM> Install-Package NLog.Web.AspNetCore
PM> Install-Package NLog
3)使用.NET CLI命令安装
> dotnet add TodoApi.csproj package NLog.Web.AspNetCore
> dotnet add TodoApi.csproj package NLog
4) 修改csproj文件
2、创建nlog.config配置文件
在项目根目录创建nlog.config配置文件,内容如下:
或者
相关文档:https://github.com/NLog/NLog/wiki/Configuration-file
3、设置nlog.config拷贝到bin
配置nlog.config启用copy to bin文件夹:
或者修改.csproj
文件添加下面内容:
4、修改program.cs
using System;using NLog.Web;using Microsoft.AspNetCore.Hosting;using Microsoft.Extensions.Logging;using Microsoft.Extensions.Hosting;public static void Main(string[] args){ var logger = NLog.Web.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(); }) .ConfigureLogging(logging => { logging.ClearProviders(); logging.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace); }) .UseNLog(); // NLog: Setup NLog for Dependency injection
5、配置 appsettings.json
在appsettings
中指定的日志配置。json
覆盖了对SetMinimumLevel
的所有调用。因此,要么删除"Default":
要么根据需要对其进行正确调整。
{
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Trace",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"AllowedHosts": "*"
}
还请记住更新任何特定于环境的配置,以避免任何意外,例如:
appsettings.Development.json
6、Write记录日志
在controller中注入ILogger
:
using Microsoft.Extensions.Logging;
public class HomeController : Controller
{
private readonly ILogger_logger;
public HomeController(ILoggerlogger)
{
_logger = logger;
_logger.LogDebug(1, "NLog injected into HomeController");
}
public IActionResult Index()
{
_logger.LogInformation("Hello, this is the index!");
return View();
}
相关文档:
.NET Core nlog使用SQLite记录Log日志配置及示例代码
.NET Core和ASP.NET Core 日志框架nlog安装配置及示例代码
.NET Core 2.0 Console(控制台)项目 Microsoft.Extensions.Logging nlog配置使用
https://github.com/NLog/NLog/wiki/Getting-started-with-ASP.NET-Core-3