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为API请求禁用StatusCodePages中间件

asp.net-core c#

Ritmo2k · 技术社区 · 7 年前

我正在使用asp.net核心2.1 StatusCodePagesMiddleware.cs

if (!statusCodeFeature.Enabled)
{
    // Check if the feature is still available because other middleware (such as a web API written in MVC) could
    // have disabled the feature to prevent HTML status code responses from showing up to an API client.
    return;
}

似乎假设API中间件禁用了处理程序,但是它没有。有没有一种更干净的方法只为MVC请求启用中间件,而不调用 app.UseWhen 检查路径字符串,或者这是最好的方法?

app.UseWhen(
    context => !context.Request.Path.Value.StartsWith("/api", StringComparison.OrdinalIgnoreCase),
    builder => builder.UseStatusCodePagesWithReExecute("/.../{0}"));

1 回复 | 直到 7 年前

Kirk Larkin 7 年前

这在某种程度上可以归结为解释,但我想说,这一评论只是在暗示能够

我不认为有任何明显更干净的东西-你有什么是有意义的,但另一个选择是使用一个自定义中间件,切换功能关闭。可能是这样的:

public void Configure(IApplicationBuilder app)
{
    // ...
    app.UseStatusCodePagesWithReExecute("/.../{0}");

    app.Use(async (ctx, next) =>
    {
        if (ctx.Request.Path.Value.StartsWith("/api", StringComparison.OrdinalIgnoreCase))
        {
            var statusCodeFeature = ctx.Features.Get<IStatusCodePagesFeature>();

            if (statusCodeFeature != null && statusCodeFeature.Enabled)
                statusCodeFeature.Enabled = false;
        }

        await next();
    });

    // ...
    app.UseMvc();
    // ...
}

gbro3n 6 年前

对我来说,正确的答案是用普通的 UseStatusCodePagesWithReExecute

启动.cs

app.UseStatusCodePagesWithReExecute("/error/{0}");

[HttpGet("error/{statusCode:int}")]
public IActionResult Error(int statusCode)
{
    var statusCodeFeature = HttpContext.Features.Get<IStatusCodeReExecuteFeature>();

    var exceptionDataFeature = HttpContext.Features.Get<IExceptionHandlerPathFeature>();

    // ... Other logging and stuff

    IActionResult actionResult;

    if (statusCodeFeature == null || statusCodeFeature.OriginalPath.StartsWith("/api", StringComparison.InvariantCultureIgnoreCase))
    {
        actionResult = Content($"The request could not be processed: {statusCode.ToString(CultureInfo.InvariantCulture)}");
    }
    else
    {
        ViewBag.StatusCode = statusCode;

        actionResult = View();
    }

    return actionResult;
}

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