返回一个 404 状态码并且没有得到响应的内容

Question

当我的 StatusCode 为 404 时，我抛出了我的自定义异常，浏览器得到 200 并且没有内容，但使用其他 StatusCode 一切正常

如何解决此问题并在我的回复中获得 404 而不是 200

这是我的中间件

public static class ExceptionHandlingMiddlewareExtensions
    {
        public static IApplicationBuilder UseNativeGlobalExceptionHandler(this IApplicationBuilder app)
        {
            app.UseExceptionHandler(errorApp =>
            {
                errorApp.Run(async context =>
                {
                    try
                    {
                        var errorFeature = context.Features.Get<IExceptionHandlerFeature>();
                        var exception = errorFeature.Error;
                    
                        // Log exception and/or run some other necessary code...

                        var errorResponse = new ErrorResponse();

                        if (exception is HttpException httpException)
                        {
                            errorResponse.StatusCode = httpException.StatusCode;
                            errorResponse.Message = httpException.Message;
                        }

                        context.Response.StatusCode = (int) errorResponse.StatusCode;
                        context.Response.ContentType = "application/json";
                        await context.Response.WriteAsync(errorResponse.ToJsonString());
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e);
                        throw;
                    }
                });
            });

            return app;
        }
    }
}

这是我的控制器，我在这里抛出 404 StatusCode enter image description here

[HttpGet]
        public IEnumerable<WeatherForecast> Get()
        {
            throw new HttpException(HttpStatusCode.NotFound, "Not found");
            var rng = new Random();
            return Enumerable.Range(1, 5).Select(index => new WeatherForecast
                {
                    Date = DateTime.Now.AddDays(index),
                    TemperatureC = rng.Next(-20, 55),
                    Summary = Summaries[rng.Next(Summaries.Length)]
                })
                .ToArray();
        }

Answer 1

尝试从ControllerBase类返回未找到的方法。

        [HttpGet]
        public IEnumerable<WeatherForecast> Get()
        {
            return NotFound();
        }

扩展您的控制器以使用基类。 它应该是这样的：

public class WeatherForecastController : ControllerBase
{
    ....
}