来自 Microsoft 文档:
ASP.NET Core 不包含用于将日志写入文件的日志提供程序。要从 ASP.NET Core 应用程序将日志写入文件,请考虑使用第三方日志提供程序。
对我来说,使用 Serilog 完全正常。
Program.cs:
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Events;
namespace WebApplication
{
public class Program
{
public static void Main(string[] args)
{
var config = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: false)
.Build();
var path = config.GetValue<string>("Logging:FilePath");
Log.Logger = new LoggerConfiguration()
.MinimumLevel.Override("Microsoft", LogEventLevel.Information)
.Enrich.FromLogContext()
.WriteTo.File(path)
.CreateLogger();
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseSerilog()
.ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); });
}
}
appsettings.json:
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
},
"FilePath" : "logs/AppLog.txt"
},
"AllowedHosts": "*"
}
控制器(或服务,根据需要而定):
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
namespace WebApplication
{
[ApiController]
public class MyController : ControllerBase
{
private readonly ILogger<MyController> _logger;
public MyController(ILogger<MyController> logger)
{
_logger = logger;
}
[HttpGet("/test")]
public ActionResult<string> Test()
{
_logger.LogInformation("Hello World.");
return "Success";
}
}
}
我安装的软件包:
<ItemGroup>
<PackageReference Include="Serilog" Version="2.10.0" />
<PackageReference Include="Serilog.AspNetCore" Version="4.1.0" />
<PackageReference Include="Serilog.Sinks.File" Version="4.1.0" />
</ItemGroup>
关于在IISExpress上运行,这取决于您拥有的launchSettings.json文件,不太确定您遇到了什么问题。通常情况下,您在配置文件中使用
"commandName": "Project"来使用Kestrel,而使用
"commandName": "IISExpress"来使用IISExpress。然后您的IDE可以让您选择要运行的配置。