在我们的系统里面，有一项技术是必须使用的，那就是日志记录。我们在调试系统或者跟踪系统运行情况，都可以通过日志了解具体的情况。在项目开发中，我们有可能使用系统本身所带的日志系统，也有可能使用第三方日志框架来记录日志，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，当然也可以是AspNetCore Web MVC项目。
安装组件：Serilog.AspNetCore（6.0.1）和Serilog.Sinks.Seq（5.2.1）
Seq — centralized structured logs for .NET, Java, Node.js (datalust.co)
1 using Serilog;
2 using Serilog.Events;
3
4 // Setup serilog in a two-step process. First, we configure basic logging
5 // to be able to log errors during ASP.NET Core startup. Later, we read
6 // log settings from appsettings.json. Read more at
7 // https://github.com/serilog/serilog-aspnetcore#two-stage-initialization.
8 // General information about serilog can be found at
9 // https://serilog.net/
10 Log.Logger = new LoggerConfiguration()
11 .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
12 .Enrich.FromLogContext()
13 .WriteTo.Console()
14 .CreateBootstrapLogger();
15
16 try
17 {
18 Log.Information("Starting the web host");
19 var builder = WebApplication.CreateBuilder(args);
20 // Full setup of serilog. We read log settings from appsettings.json
21 builder.Host.UseSerilog((context, services, configuration) => configuration
22 .ReadFrom.Configuration(context.Configuration)
23 .ReadFrom.Services(services)
24 .Enrich.FromLogContext());
25 // Add services to the container.
26
27 builder.Services.AddControllers();
28 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
29 builder.Services.AddEndpointsApiExplorer();
30 builder.Services.AddSwaggerGen();
31
32 var app = builder.Build();
33
34 // Configure the HTTP request pipeline.
35 app.UseSerilogRequestLogging(configure =>
36 {
37 configure.MessageTemplate = "HTTP {RequestMethod} {RequestPath} ({UserId}) responded {StatusCode} in {Elapsed:0.0000}ms";
38 });
39 // Configure the HTTP request pipeline.
40 if (app.Environment.IsDevelopment())
41 {
42 app.UseSwagger();
43 app.UseSwaggerUI();
44 }
45
46 app.UseHttpsRedirection();
47
48 app.UseAuthorization();
49
50 app.MapControllers();
51
52 app.Run();
53 }
54 catch
55 (Exception ex)
56 {
57 Log.Fatal(ex, "Host terminated unexpexctedly");
58 }
59 finally
60 {
61 Log.CloseAndFlush();
62 }
1 {
2 //"Logging": {
3 // "LogLevel": {
4 // "Default": "Information",
5 // "Microsoft.AspNetCore": "Warning"
6 // }
7 //},
8 "Serilog": {
9 "Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.File", "Serilog.Sinks.Seq" ],
10 "MinimumLevel": "Information",
11 // Where do we want to write our logs to? Choose from a large number of sinks:
12 // https://github.com/serilog/serilog/wiki/Provided-Sinks.
13 "WriteTo": [
14 {
15 "Name": "Console"
16 },
17 {
18 "Name": "File",
19 "Args": { "path": "Logs/log.txt" }
20 },
21 {
22 "Name": "Seq",
23 "Args": { "serverUrl": "http://localhost:8888" }
24 }
25 ],
26 "Enrich": [ "FromLogContext", "WithMachineName", "WithThreadId" ],
27 "Properties": {
28 "Application": "AspNetCoreSerilogDemo"
29 }
30 },
31 "AllowedHosts": "*"
32 }
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";
}
}
}
配置文件里面输出路径有"Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.File", "Serilog.Sinks.Seq" ],所以同样会输出到日志文件中,指定路径和文件名：
更多更详细功能参考:
Serilog — simple .NET logging with fully-structured events
Seq — centralized structured logs for .NET, Java, Node.js (datalust.co)
天下国家,可均也；爵禄,可辞也；白刃,可蹈也；中庸不可能也 转 https://www.cnblogs.com/PatrickLiu/p/16753606.html 标签：Sinks,Serilog,app,serilog,6.0,NET,日志 From： https://www.cnblogs.com/wl-blog/p/17202823.html