我正在开发一个.NET core 3.1 控制台应用程序 (web-api)。我使用Serilog服务（它基本上是使用 Microsoft.Extensions.Logging）。Serilog 被注入并且可以在 FW Controllers 方法中使用。现在 - 我需要一些不同的东西 - 每当系统启动时（在关闭后），我需要发出一个 http post 请求 - 你可以在启动方法中执行ConnectionInitiator.Initiate()时看到它。在同一范围内（方法\类） - 我需要使用记录器来记录一些数据。现在 - 如果请求将通过控制器 - 记录器将可用（由DI）。长话短说——我需要以某种方式将 Ilogger 注入课堂或以其他方式使其可用。我尝试在启动时使用记录器，但这似乎是不可能的（因为.net core 3.0 - 如果我理解正确的话）查看我的代码：
程序.cs：
public class Program
{
public static void Main(string[] args)
{
var loggerConfig = new ConfigurationBuilder()
.AddJsonFile("appsettings.json")
.Build();
//Reading the appconfig.json
Log.Logger = new LoggerConfiguration().ReadFrom.Configuration(loggerConfig).CreateLogger();
try
{
Log.Information("System Started up");
CreateWebHostBuilder(args).Build().Run();
}
catch (Exception ex)
{
Log.Fatal(ex, "THE APPLICATION FAILED TO START UP");
}
finally
{
Log.CloseAndFlush();
}
}
public static IWebHostBuilder CreateWebHostBuilder(string[] args)
{
return WebHost.CreateDefaultBuilder(args).ConfigureLogging((context, logging) =>
{
logging.ClearProviders();
}).UseSerilog().UseStartup<Startup>();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
启动.cs
public class Startup
{
public Startup(IConfiguration configuration/*, Microsoft.Extensions.Logging.ILogger logger*/)
{
Configuration = configuration;
ConnectionInitiator.Initiate(configuration/*, logger*/);
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddCors();
services.AddControllers();
services.AddLogging(loggingBuilder => loggingBuilder.AddSerilog(dispose: true));
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
app.UseCors(builder => builder.AllowAnyHeader().AllowAnyMethod().SetIsOriginAllowed((host) => true).AllowCredentials());
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseRouting();
app.UseAuthentication();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
ConnectionInitiator.cs：
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using System.Threading.Tasks;
namespace AAA.BL
{
public static class ConnectionInitiator
{
private static readonly object threadlock = new object();
private static MyConfig myConfig;
private static ILogger ilogger;
/*
public ConnectionInitiator(ILogger _logger)
{
ilogger = _logger;
}
*/
public static void/*async Task*/ Initiate(IConfiguration configuration/*, ILogger ilogger*/)
{
HttpRequester httpRequester = new HttpRequester();
if (myConfig == null)
{
myConfig = new myConfig(configuration);
}
IssueOTPResponse response = /*await*/ httpRequester.PostSomething(myConfig, ilogger).Result; //Double check thread safe singleton implementation
if (response.ststuacode != 200)
{
ilogger.logcritical($"critical error when initiate connection (connectioninitiator): {response.statusdescription}");
}
}
}
}