Question

.Net Core 2.2-我有一个库项目，我已经设置了一个记录器，如下所示。当我记录调试消息时，我什么也无法输出到控制台。我需要帮助来确定日志记录设置是否不正确，配置文件还是两者均正确。

public class TaxApi
{
    ClientOptions _clientOptions = new ClientOptions();

    void ConfigureServices(IServiceCollection services)
    {
        services.AddLogging(c =>
        {
            c.AddConsole()
                .AddDebug();
                //.AddFilter<TaxService>(LogLevel.Debug.ToString());
        });
    }

    public async Task LoadSettings(string environmentName = "development")
    {
            var builder = new ConfigurationBuilder()
                .SetBasePath(_clientOptions.SettingsDirectory)
                .AddJsonFile(_clientOptions.SettingsFilePath, optional: false, reloadOnChange: true)
                .AddJsonFile($"{_clientOptions.SettingsFileNameWithoutExtension}.{environmentName}.{_clientOptions.SettingsFileExtension}", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables();

            var configuration = builder.Build();

            var serviceCollection = new ServiceCollection();

            ConfigureServices(serviceCollection);

            var serviceProvider = serviceCollection.BuildServiceProvider();

            var logger = serviceProvider.GetService<ILogger<TaxApi>>();
            logger.LogDebug("why is this not going to the console!!!");
    }
}

myservice-settings.json-这是要加载的文件

{
  "Logging": {
    "LogLevel": {
      "Default": "Debug",
      "System": "Information",
      "Microsoft": "Information"
    },
    "Console": {
      "LogLevel": {
        "Default": "Debug",
        "TaxApi": "Debug"
      }
    }
  }
}

使用上述库的测试控制台应用。

class Program
{
    async static Task Main(string[] args)
    {
        await new TaxApi()
            .LoadSettings();
    }
}

Answer 1

也许它正在正确地写入控制台，但是在记录器实际刷新并将消息输出到控制台之前，您的应用程序已终止。这是由于一些批处理效果。

在您的日志记录语句后添加此行只是为了验证我的理论

await Task.Delay(1000);

无法获取调试日志记录以输出到控制台

1 个答案: