Serilog ReadFrom 配置

Question

我正在尝试使用 Serilog.Settings.Configuration 预发布 NuGet 包从 appsettings.json 加载我的 Serilog 配置。但是，当我使用 Configuration.GetSection 加载它时，该值继续返回为 null。

这是我的 Program.cs 文件中的内容：

    return WebHost.CreateDefaultBuilder(args)
    .UseStartup<Startup>()
    .ConfigureLogging(
        (hostingContext, loggingBuilder) =>
        {
            loggingBuilder.ClearProviders();
            loggingBuilder.AddSerilog(
                new LoggerConfiguration()
                    .ReadFrom.ConfigurationSection(hostingContext.Configuration.GetSection("Serilog"))
                    .CreateLogger()
            );
        }
    );

这是我的 appsettings.json 文件中的内容：

    {
    "Serilog": {
        "Using": [ "Serilog.Sinks.MSSqlServer" ],
        "MinimumLevel": {
            "Default": "Verbose",
            "Override": {
                "Microsoft": "Verbose",
                "System": "Verbose",
                "Microsoft.AspNetCore.Authentication": "Verbose"
            }
        },
        "WriteTo": [
            {
                "Name": "MSSqlServer",
                "Args": {
                    "connectionString": "*my_connectionString*",
                    "tableName": "ErrorLog"
                }
            }
        ]
    }}

已安装 NuGet 包：

• Microsoft.AspNetCore.App v2.1.1
• Serilog v2.7.1
• Serilog.AspNetCore v2.1.1
• Serilog.Extensions.Logging v2.0.2
• Serilog.Settings.Configuration v3.0.0-dev-00119
• Serilog.Sinks.MSSqlServer v5.1.2

Answer 1

我是这样配置的：

return WebHost.CreateDefaultBuilder(args)
            .UseStartup<Startup>()
            .UseSerilog((hostingContext, loggerConfiguration) => loggerConfiguration
                .ReadFrom.Configuration(hostingContext.Configuration))
            .Build();

默认情况下Serilog 在配置中查找Serilog 部分

Answer 2

我是这样配置的

     public static void Main(string[] args)
     {
        var _config = new ConfigurationBuilder()
                    .AddJsonFile("loggerconfig.json")//mantained separate 
     config file.
                    .Build();
        Log.Logger = new LoggerConfiguration()
                    .ReadFrom.Configuration(_config)
                    .CreateLogger();
        CreateWebHostBuilder(args).Build().Run();
    }

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

根据 Serilog，这是更好的方法。

Answer 3

这是我从 logging.json 中读取的方法：

            var builder = new ConfigurationBuilder()
                .AddJsonFile(path: "logging.json", optional: false, reloadOnChange: true);

            var config = builder.Build();
            Log.Logger = new LoggerConfiguration()
                        .Enrich.With(new EventBusLogEnricher())
                        .ReadFrom.Configuration(config)
                        .CreateLogger();