aspnetcore 使用serilog日志

而在实际项目开发中，使用第三方日志框架来记录日志也是非常多的，首先一般基础的内置日志记录器在第三方日志框架中都有实现，然后很多第三方日志框架在功能上更强大和丰富，能满足我们更多的项目分析和诊断的需求。常用的有log4net,更复杂的elk，项目中有用到exceptionless。下面说的是serilog：

首先建个aspnetcorewebapi6.0的项目

安装组件：

Seq — centralized structured logs for .NET, Java, Node.js (datalust.co)

using Serilog;using Serilog.Events;// Setup serilog in a two-step process. First, we configure basic logging// to be able to log errors during ASP.NET Core startup. Later, we read// log settings from appsettings.json. Read more at// https://github.com/serilog/serilog-aspnetcore#two-stage-initialization.// General information about serilog can be found at// https://serilog.net/Log.Logger = new LoggerConfiguration().MinimumLevel.Override(\"Microsoft\", LogEventLevel.Information).Enrich.FromLogContext().WriteTo.Console().CreateBootstrapLogger();try{Log.Information(\"Starting the web host\");var builder = WebApplication.CreateBuilder(args);// Full setup of serilog. We read log settings from appsettings.jsonbuilder.Host.UseSerilog((context, services, configuration) => configuration.ReadFrom.Configuration(context.Configuration).ReadFrom.Services(services).Enrich.FromLogContext());// Add services to the container.builder.Services.AddControllers();// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbucklebuilder.Services.AddEndpointsApiExplorer();builder.Services.AddSwaggerGen();var app = builder.Build();// Configure the HTTP request pipeline.app.UseSerilogRequestLogging(configure =>{configure.MessageTemplate = \"HTTP {RequestMethod} {RequestPath} ({UserId}) responded {StatusCode} in {Elapsed:0.0000}ms\";});// Configure the HTTP request pipeline.if (app.Environment.IsDevelopment()){app.UseSwagger();app.UseSwaggerUI();}app.UseHttpsRedirection();app.UseAuthorization();app.MapControllers();app.Run();}catch(Exception ex){Log.Fatal(ex, \"Host terminated unexpexctedly\");}finally{Log.CloseAndFlush();}

{//\"Logging\": {//  \"LogLevel\": {//    \"Default\": \"Information\",//    \"Microsoft.AspNetCore\": \"Warning\"//  }//},\"Serilog\": {\"Using\": [ \"Serilog.Sinks.Console\", \"Serilog.Sinks.File\", \"Serilog.Sinks.Seq\" ],\"MinimumLevel\": \"Information\",// Where do we want to write our logs to? Choose from a large number of sinks:// https://github.com/serilog/serilog/wiki/Provided-Sinks.\"WriteTo\": [{\"Name\": \"Console\"},{\"Name\": \"File\",\"Args\": { \"path\": \"Logs/log.txt\" }},{\"Name\": \"Seq\",\"Args\": { \"serverUrl\": \"http://localhost:8888\" }}],\"Enrich\": [ \"FromLogContext\", \"WithMachineName\", \"WithThreadId\" ],\"Properties\": {\"Application\": \"AspNetCoreSerilogDemo\"}},\"AllowedHosts\": \"*\"}

运行结果如下，已替换系统自带information：

请求跟踪分析：

using Microsoft.AspNetCore.Mvc;namespace AspNetCoreSerilogDemo.Controllers{[ApiController][Route(\"[controller]\")]public class SeriLogDemoController : ControllerBase{private readonly ILogger<SeriLogDemoController> _logger;public SeriLogDemoController(ILogger<SeriLogDemoController> logger){_logger = logger;}[HttpGet]public string String(){_logger.LogInformation(\"this is serilog...\");return \"Suscess\";}}}