c# - Serilog 不创建日志文件

Question

Serilog 不会创建日志文件 - 因此(我认为)不会记录任何内容。
由于目标应该是微服务，我使用的是 CQRS 模式。

这是我的 Startup.cs

private readonly ISession session;
private readonly ILogger logger;

public Startup(IConfiguration configuration)
{
  Configuration = configuration;

    var baseDirectory = Directory.GetDirectoryRoot(AppDomain.CurrentDomain.BaseDirectory);

    Log.Logger = new LoggerConfiguration()
                    .WriteTo
                    .Logger(lc => lc.Filter
                                    .ByIncludingOnly(e => e.Level == LogEventLevel.Information || e.Level == LogEventLevel.Debug)
                                    .WriteTo.RollingFile(Path.Combine(baseDirectory, "/Logs/info.log")))
                    .WriteTo
                    .Logger(lc => lc.Filter
                                    .ByIncludingOnly(e => e.Level == LogEventLevel.Error)
                                    .WriteTo.RollingFile(Path.Combine(baseDirectory, "/Logs/error.log")))

}
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
  if (env.IsDevelopment())
  {
    app.UseDeveloperExceptionPage();
  }

   loggerFactory.AddSerilog();
   ...//To shorten this example in Stackoverflow, I've excluded the standard code. But in reality they are of course there
}

这是我的类，其中记录器将由 DI 注入(inject):

public MaterialCommandHandler(ISession session, ILogger<MaterialCommandHandler> logger)
{
  this.session = session;
  this.logger = logger;
}

以及位于 MaterialCommandHandler 类中的 Handle 方法，我想在其中向日志文件中写入一些内容

public async Task Handle(CreateMaterialCommand command)
{
  var material = new Material(command.Id, command.TechDesc, command.Description, command.MaterialClass);
  logger.LogDebug($"{DateTimeOffset.UtcNow} - {nameof(CreateMaterialCommand)} - received for {material} with {nameof(command.TechDesc)} : {command.TechDesc}.");
  await session.Add(material);
  await session.Commit();
  logger.LogDebug($"{DateTimeOffset.UtcNow} - {nameof(CreateMaterialCommand)} - received for {material} with {nameof(command.TechDesc)} : {command.TechDesc}.");
}

任何人都知道为什么没有创建文件 - 并且不会记录任何内容？

Answer 1

您错过了 .CreateLogger()您的日志构建结束时的声明，但我认为真正的问题是您的 Path.Combine语句可能导致无效路径或您不期望的路径。 Path.Combine有一些您可能不知道的烦人行为。考虑以下:

Path.Combine(@"C:\Temp", @"Logs\mylog.txt"); // C:\Temp\Logs\mylog.txt
Path.Combine(@"C:\Temp\", @"Logs\mylog.txt"); // C:\Temp\Logs\mylog.txt
Path.Combine(@"C:\Temp\", @"\Logs\mylog.txt"); // \Logs\mylog.txt
Path.Combine(@"C:\Temp", @"\Logs\mylog.txt"); // \Logs\mylog.txt