Built-in UseExceptionHandler extension method

1.Post.GlobalExceptionHandler.BuiltInMiddlewareExtension.cs

public static class ExceptionHandlerExtensions
{
	public static void UseGlobalExceptionHandler(this IApplicationBuilder app, ILoggerFactory loggerFactory)
	{
		app.UseExceptionHandler(builder =>
		{
			builder.Run(async context =>
			{
				var exceptionHandlerFeature = context.Features.Get<IExceptionHandlerFeature>();

				if (exceptionHandlerFeature != null)
				{
					var logger = loggerFactory.CreateLogger("GlobalExceptionHandler");
					logger.LogError($"Unexpected error: {exceptionHandlerFeature.Error}");

					context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
					context.Response.ContentType = "application/json";

					var json = new
					{
						context.Response.StatusCode,
						Message = "An error occurred whilst processing your request",
						Detailed = exceptionHandlerFeature.Error
					};

					await context.Response.WriteAsync(JsonConvert.SerializeObject(json));
				}
			});
		});
	}
}

2.Post.GlobalExceptionHandler.Startup.cs

public class Startup
{
	public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
	{
		// ... código omitido
		
		app.UseGlobalExceptionHandler(loggerFactory);
	}
}