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public void ConfigureServices(IServiceCollection services)

{

    ...

    services.AddFeatureManagement();

    ...

}

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"FeatureManagement": 

    {

        "ForbiddenDebugEndpoint": false

    }

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public class DebugMiddleware : IMiddleware

{

    private readonly IFeatureManager _featureManager;

    public DebugMiddleware(IFeatureManager featureManager)

    {

        _featureManager = featureManager;

    }

    public async Task InvokeAsync(HttpContext context, RequestDelegate next)

    {

        var isDebugEndpoint = context.Request.Path.Value.Contains("/test");

        var debugEndpoint = await _featureManager.IsEnabledAsync("ForbiddenDebugEndpoint");

        if (isDebugEndpoint && debugEndpoint)

        {

            context.SetEndpoint(new Endpoint((context) =>

            {

                context.Response.StatusCode = StatusCodes.Status403Forbidden;

                return Task.CompletedTask;

            },

                        EndpointMetadataCollection.Empty,

                        "无权访问"));

        }

        await next(context);

    }

}

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var debugEndpoint = await _featureManager.IsEnabledAsync("ForbiddenDebugEndpoint");