asp.net-mvc - 间歇性的asp.net mvc异常: “A public action method ABC could not be found on controller XYZ.”

Question

我收到间歇性异常，提示 asp.net mvc 找不到操作方法。异常(exception)情况如下:

A public action method 'Fill' could not be found on controller 'Schoon.Form.Web.Controllers.ChrisController'.

我认为我的路由设置正确，因为此应用程序大部分时间都可以工作。这是 Controller 的操作方法。

[ActionName("Fill")]
[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post), UserIdFilter, DTOFilter]
public ActionResult Fill(int userId, int subscriberId, DisplayMode? mode)
{
     //…
}

路线:

routes.MapRoute(
        "SchoonForm",
        "Form/Fill/{subscriberId}",
        new { controller = "ChrisController", action = "Fill" },
        new { subscriberId = @"\d+" }
    );

这是堆栈:

System.Web.HttpException: A public action method 'Fill' could not be found on controller 'Schoon.Form.Web.Controllers.ChrisController'. at System.Web.Mvc.Controller.HandleUnknownAction(String actionName) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\Controller.cs:line 197 at System.Web.Mvc.Controller.ExecuteCore() in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\Controller.cs:line 164 at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\ControllerBase.cs:line 76 at System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\ControllerBase.cs:line 87 at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 80 at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 68 at System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 104 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

这是我的过滤器的示例，它们的工作方式都相同:

public class UserIdFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        const string Key = "userId";

        if (filterContext.ActionParameters.ContainsKey(Key))
        {
            filterContext.ActionParameters[Key] = // get the user id from session or cookie
        }

        base.OnActionExecuting(filterContext);
    }
}

谢谢， 克里斯

Answer 1

我们找到了答案。我们查看了我们的网络日志。它表明我们收到了一些奇怪的 http 操作(动词/方法)，例如 OPTIONS、PROPFIND 和 HEAD。

这似乎是其中一些异常的原因。这解释了为什么它是间歇性的。

我们使用curl.exe工具重现了该问题:

curl.exe -X OPTIONS http://localhost/v2.3.1.0/(S(boztz1aquhzurevtjwllzr45))/Form/Fill/273
curl.exe -X PROPFIND http://localhost/v2.3.1.0/(S(boztz1aquhzurevtjwllzr45))/Form/Fill/273
curl.exe -X HEAD http://localhost/v2.3.1.0/(S(boztz1aquhzurevtjwllzr45))/Form/Fill/273

我们使用的修复方法是向 web.config 添加授权部分:

<authorization>
  <deny users="*" verbs="OPTIONS, PROPFIND, HEAD"/>
</authorization>