linux - SQL 日志在 asp net core 2.1 的 linux 服务器中不起作用

Question

我正在创建 dotnet 核心 2.1 项目。我使用了 serilogs。在我的 Windows 机器上它工作正常。但是在托管它之后，serilogs 不工作。没有创建日志文件夹和日志文件。我在 ubuntu 18.04 版本服务器上托管它。我通过手动创建日志文件夹并赋予它读写权限来尝试它

   sudo chmod 775 /var/app/logs
   sudo chown www-data /var/app/logs

这是程序类中的代码

public class Program
{
    public static void Main(string[] args)
    {
        Log.Logger = new LoggerConfiguration()
            .MinimumLevel.Verbose()
            .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
            .MinimumLevel.Override("System", LogEventLevel.Warning)
            .MinimumLevel.Override("Microsoft.AspNetCore.Authentication", LogEventLevel.Information)
            .Enrich.FromLogContext()
            .WriteTo.Console(outputTemplate: "[{Timestamp:HH:mm:ss} {Level}] {SourceContext}{NewLine}{Message:lj}{NewLine}{Exception}{NewLine}", theme: AnsiConsoleTheme.Literate)
            .WriteTo.RollingFile(@"logs\log-{Date}.log", fileSizeLimitBytes: null, retainedFileCountLimit: null)
            .CreateLogger();
        CreateWebHostBuilder(args).Build().Run();
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
        .ConfigureLogging(builder =>
                 {
                     builder.SetMinimumLevel(LogLevel.Warning);
                     builder.AddFilter("ApiServer", LogLevel.Debug);
                     builder.AddSerilog();
                 })
        .UseContentRoot(Directory.GetCurrentDirectory())
        .UseStartup<Startup>();
}

这是我的启动类代码

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

    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.AddDbContext<DataContext>(s => s.UseMySql(Configuration.GetConnectionString("DefaultConnection"))
        .ConfigureWarnings(warnings => warnings.Ignore(CoreEventId.IncludeIgnoredWarning)));
        services.AddMvc()
                    .SetCompatibilityVersion(CompatibilityVersion.Version_2_1)
                    .AddJsonOptions(opt =>
                    {
                        opt.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
                    });
       services.AddCors();
        services.AddAutoMapper();
        services.AddTransient<Seed>();
        services.AddScoped<IAuthRepository, AuthRepository>();
        services.AddScoped<IDatingRepository, DatingRepository>();
        services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddJwtBearer(options =>
        {
            options.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII
                  .GetBytes(Configuration.GetSection("AppSettings:Token").Value)),
                ValidateIssuer = false,
                ValidateAudience = false
            };
        });
        services.AddScoped<LogUserActivity>();



        IdentityBuilder builder = services.AddIdentityCore<User>(opt =>
        {
            opt.Password.RequireDigit = false;
            opt.Password.RequiredLength = 4;
            opt.Password.RequireNonAlphanumeric = false;
            opt.Password.RequireUppercase = false;

        });

        builder = new IdentityBuilder(builder.UserType, typeof(Role), builder.Services);
        builder.AddEntityFrameworkStores<DataContext>();
        builder.AddRoleValidator<RoleValidator<Role>>();
        builder.AddRoleManager<RoleManager<Role>>();
        builder.AddSignInManager<SignInManager<User>>();



        // services.AddAuthorization(options => {
        //     options.AddPolicy("RequireAdminRole", policy => policy.RequireRole("Admin"));
        //     options.AddPolicy("SuperAdminPhotoRole", policy => policy.RequireRole("SuperAdmin"));
        // });


        // services.AddCors();


    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, Seed seeder, ILoggerFactory loggerFactory)
    {
        loggerFactory.AddConsole(Configuration.GetSection("Logging"))
            .AddDebug();

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {

            app.UseExceptionHandler(builder =>
            {
                builder.Run(async context =>
                {
                    context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

                    var error = context.Features.Get<IExceptionHandlerFeature>();
                    if (error != null)
                    {
                        context.Response.AddApplicationError(error.Error.Message);
                        await context.Response.WriteAsync(error.Error.Message);
                    }
                });
            });

            // app.UseHsts();
        }

        // app.UseHttpsRedirection();
        seeder.SeedUsers();
        //  app.UseCors(x => x.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin().AllowCredentials());
        app.UseCors(x => x.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());
        app.UseAuthentication();
        app.UseDefaultFiles();
        app.UseStaticFiles();
        app.UseMvc(routes =>
        {
            routes.MapSpaFallbackRoute(
                name: "spa-fallback",
                defaults: new { controller = "Fallback", action = "Index" }
            );
        });
    }
}

这是我使用日志的方式

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

    public PhotosController(ILogger<PhotosController> logger
    )
    {
        _logger = logger;

    }

     [HttpPost("{id}/setMain")]
      public async Task<IActionResult> SetMainPhoto(Guid id)
    {
        try
        {
             _logger.LogDebug("Starting to change main photo");  
        }
        catch(Exception e) {
     _logger.LogError("An error occurs while changing photo");
      }}}

请帮我解决这个问题。这在 Windows 机器上工作正常。只有在托管后才发生这种情况

Answer 1

在你需要的 Program.cs 文件中

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
          WebHost.CreateDefaultBuilder(args).UseStartup<Startup>().UseSerilog();

重要的部分是.UseSerilog()