Configuring Serilog throws collection modified exception.

huangapple
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英文:

Configuring Serilog throws collection modified exception

问题

我正在创建一个.NET 6 Web API应用程序，并尝试在其中配置Serilog。以下是代码片段。执行时，我收到“集合已修改”异常。

  1. using Serilog;
  2. using Serilog.Core;
  3. using Serilog.Events;
  5. var ihb = Host.CreateDefaultBuilder(args)
  6. .ConfigureWebHostDefaults(webBuilder =>
  7. {
  8.     webBuilder.ConfigureServices((context, collection) =>
  9.     {
  10.         collection.AddLogging(builder =>
  11.         {
  12.             var logger = new LoggerConfiguration().
  13.                 MinimumLevel.ControlledBy(new LoggingLevelSwitch(LogEventLevel.Error))
  14.                 // 其他配置在此处
  15.                 .CreateLogger();
  16.     
  17.             webBuilder.UseSerilog(logger);
  18.         });
  19.     });
  20. });
  22. try
  23. {
  24.   var ih = ihb.Build();
  25.   ih.Run();
  26. }
  27. catch (Exception ex) { }

有人可以指出可能的问题是什么吗？

谢谢。

英文:

I am creating .net 6 web api app and I am trying to configure serilog in it. Below is the snippet of the code. When executing, am getting collection was modified exception..

  1. using Serilog;
  2. using Serilog.Core;
  3. using Serilog.Events;
  5. var ihb = Host.CreateDefaultBuilder(args)
  6. .ConfigureWebHostDefaults(webBuilder =>
  7. {
  8.     webBuilder.ConfigureServices((context, collection) =>
  9.     {
  10.         collection.AddLogging(builder =>
  11.         {
  12.             var logger = new LoggerConfiguration().
  13.                 MinimumLevel.ControlledBy(new LoggingLevelSwitch(LogEventLevel.Error))
  14.                 //  other configuration goes here
  15.                 .CreateLogger();
  16.     
  17.             webBuilder.UseSerilog(logger);
  18.         });
  19.     });
  20. });
  22. try
  23. {
  24.   var ih = ihb.Build();
  25.   ih.Run();
  26. }
  27. catch (Exception ex) { }

Could someone point out what the issue might be..

Thanks..

答案1

得分: 1

为了解决这个问题，您可以修改您的代码以在AddLogging方法之外配置Serilog。

  1. using Serilog;
  2. using Serilog.Core;
  3. using Serilog.Events;
  5. var ihb = Host.CreateDefaultBuilder(args)
  6.     .ConfigureWebHostDefaults(webBuilder =>
  7.     {
  8.         webBuilder.ConfigureServices((context, collection) =>
  9.         {
  10.             // 复制服务集合
  11.             var services = collection.BuildServiceProvider();
  13.             // 从服务集合中检索上下文对象
  14.             var context = services.GetRequiredService<IWebHostEnvironment>();
  16.             // 使用上下文对象进行日志配置
  17.             var logger = new LoggerConfiguration()
  18.                 .MinimumLevel.ControlledBy(new LoggingLevelSwitch(LogEventLevel.Error))
  19.                 // 使用上下文对象进行其他配置
  20.                 .CreateLogger();
  22.             // 使用配置好的日志记录器启用Serilog
  23.             webBuilder.UseSerilog(logger);
  25.             // 将日志服务添加到集合中
  26.             collection.AddLogging();
  27.         });
  28.     });
  30. try
  31. {
  32.     var ih = ihb.Build();
  33.     ih.Run();
  34. }
  35. catch (Exception ex) { }
英文:

To resolve this issue, you can modify your code to configure Serilog outside the AddLogging method.

  1. using Serilog;
  2. using Serilog.Core;
  3. using Serilog.Events;
  5. var ihb = Host.CreateDefaultBuilder(args)
  6.     .ConfigureWebHostDefaults(webBuilder =&gt;
  7.     {
  8.         webBuilder.ConfigureServices((context, collection) =&gt;
  9.         {
  10.             // Make a copy of the services collection
  11.             var services = collection.BuildServiceProvider();
  13.             // Retrieve the context object from the services collection
  14.             var context = services.GetRequiredService&lt;IWebHostEnvironment&gt;();
  16.             // Log configuration using the context object
  17.             var logger = new LoggerConfiguration()
  18.                 .MinimumLevel.ControlledBy(new LoggingLevelSwitch(LogEventLevel.Error))
  19.                 // other configuration using the context object
  20.                 .CreateLogger();
  22.             // Use Serilog with the configured logger
  23.             webBuilder.UseSerilog(logger);
  25.             // Add logging services to the collection
  26.             collection.AddLogging();
  27.         });
  28.     });
  30. try
  31. {
  32.     var ih = ihb.Build();
  33.     ih.Run();
  34. }
  35. catch (Exception ex) { }

huangapple
  • 本文由 发表于 2023年6月1日 15:13:54
  • 转载请务必保留本文链接：https://go.coder-hub.com/76379486.html
  • c#
  • serilog
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