c# - AppInsights 仅保存遥测数据，但不使用 IIS 上托管的 .Net Core Web 应用程序保存日志

Question

我的Program课看起来像这样

public class Program
{
    public static void Main(string[] args)
    {
        CreateWebHostBuilder(args)
            .Build()
            .Run();
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
        .ConfigureAppConfiguration((webHostingBuilder, configBuilder) =>
            {
                configBuilder.SetBasePath(webHostingBuilder.HostingEnvironment.ContentRootPath)
                                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                                .AddJsonFile($"appsettings.{webHostingBuilder.HostingEnvironment.EnvironmentName}.json", optional: true, reloadOnChange: true)
                                .AddEnvironmentVariables();
            })
        .ConfigureLogging((webHostingBuilder, logging) =>
        {
            logging.ClearProviders();
            logging.AddConsole();
            logging.AddDebug();
            logging.AddApplicationInsights(
                webHostingBuilder.Configuration.GetValue<string>("Logging:ApplicationInsights:InstrumentationKey"));
        })
        .UseStartup<Startup>();
}

和我Startup的ConfigureServices

services.AddApplicationInsightsTelemetry(configuration["Logging:ApplicationInsights:InstrumentationKey"]);

这是我的控制器类：

public class AccountController : BaseController
{
    private ILogger _logger;

    public AccountController(ILogger<AccountController> logger)
    {   ... } 

    [HttpGet]
    public async Task<IActionResult> Login(string returnUrl)
    {
        _logger.LogError("SuperError");
    }
}

为了保存日志，我还需要配置其他什么吗？在做我的例子时，我在这里看不到任何东西

Answer 1

你的代码看起来不错。有时日志可能需要一段时间才能显示在App Insights. 给出正确的示例配置InstrumentationKey：

https://docs.microsoft.com/en-us/azure/azure-monitor/app/ilogger#im-using-the-standalone-package-microsoftextensionsloggingapplicationinsights-and-enabling-application-insights-provider-by-calling- builderaddapplicationinsightsikey-is-there-an-option-to-get-an-instrumentation-key-from-configuration

启动.cs

services.AddApplicationInsightsTelemetry();

应用设置.json

"ApplicationInsights": {
  "InstrumentationKey": "putinstrumentationkeyhere"
}

WeatherForecastController.cs

private readonly ILogger<WeatherForecastController> _logger;

public WeatherForecastController(ILogger<WeatherForecastController> logger)
{
    _logger = logger;
}

[HttpGet]
public ActionResult<IEnumerable<WeatherForecast>> Get()
{
    _logger.LogInformation("WeatherForecastController Get");