asp.net - 从 Web API 之外的 ActionFilter 或 ASP.NET MVC Web Controller 获取 HttpRequestMessage

Question

我有一段时间试图获取 HttpRequestMessage 的实例，以便我可以将它传递给方法 GetCacheOutputProvider下面来自 ActionFilter 和/或普通的 ASP.NET MVC Controller 。我知道我可以从 Web API 中获取，但是这些实例呢？

public class CacheResetFilter : ActionFilterAttribute
    {
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            var cache = GlobalConfiguration.Configuration.CacheOutputConfiguration().GetCacheOutputProvider(HTTPREQUESTMESSAGE);
                cache.Contains("eventid=" + eventId);

            base.OnActionExecuted(filterContext);
        }

Answer 1

1.在 MVC Controller 中，您可以这样做:

public class HomeController : Controller
{
   public ActionResult Test()
        {
            HttpRequestMessage httpRequestMessage =
                HttpContext.Items["MS_HttpRequestMessage"] as HttpRequestMessage;
            return View();        
        }
 }

2.在操作过滤器中，您可以执行以下操作:

public class HttpRequestMessageAttribute : System.Web.Mvc.ActionFilterAttribute
{
    public override void OnActionExecuted(System.Web.Mvc.ActionExecutedContext filterContext)
    {
        HttpRequestMessage httpRequestMessage =
            filterContext.HttpContext.Items["MS_HttpRequestMessage"] as HttpRequestMessage;
        //var cache = GlobalConfiguration.Configuration.CacheOutputConfiguration().GetCacheOutputProvider(httpRequestMessage);
        //cache.Contains("eventid=" + eventId);

        base.OnActionExecuted(filterContext);
    }
}

或

    public class HttpRequestMessageAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            HttpRequestMessage httpRequestMessage =
                filterContext.HttpContext.Items["MS_HttpRequestMessage"] as HttpRequestMessage;

            base.OnActionExecuting(filterContext);
        }
   }

希望对你有帮助。