尝试登录到SQL Server数据库，但似乎无法正常工作

Question

我正在尝试登录到SQL Server。从我发现的情况来看，它应该是正确的，但似乎仍然没有日志记录。您能看到我在这段代码中做什么吗？抱歉，将代码作为图片发布，此处的格式不适合我。

我试图以一种与实际情况更接近的方式尝试这种方式，但是仍然没有运气。

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;

        Log.Logger = new LoggerConfiguration()
           .Enrich.FromLogContext()
           .WriteTo.MSSqlServer(connectionString: "",
                 tableName: "Logs"
                , schemaName: "LOG"
                , autoCreateSqlTable: true,
                 restrictedToMinimumLevel: LogEventLevel.Information)
           .CreateLogger();
    }

    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.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        loggerFactory.AddSerilog();

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {
            // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
            app.UseHsts();
        }

        app.UseHttpsRedirection();
        app.UseMvc();
    }
}

public class ValuesController : ControllerBase
{
    private readonly ILogger<ValuesController> _logger;

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

    // GET api/values
    [HttpGet]
    public ActionResult<IEnumerable<string>> Get()
    {
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        _logger.LogInformation($"Start:");
        return new string[] { "value1", "value2" };
    }
 }

Answer 1

您的代码未设置默认的Serilog记录器，因此所有记录调用都将丢失。您应该添加

Log.Logger=logger;`

在Serilog.AspNetCore回购页面中显示：

    public static int Main(string[] args)
    {
        Log.Logger = new LoggerConfiguration()
            .MinimumLevel.Debug()
            .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
            .Enrich.FromLogContext()
            .WriteTo.Console()
            .CreateLogger();

        try
        {
            Log.Information("Starting web host");
            CreateWebHostBuilder(args).Build().Run();
            return 0;
        }
        catch (Exception ex)
        {
            Log.Fatal(ex, "Host terminated unexpectedly");
            return 1;
        }
        finally
        {
            Log.CloseAndFlush();
        }
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .UseStartup<Startup>()
                .UseSerilog(); // <-- Add this line;
}