asp.net MvcHandler.ProcessRequest不会被调用

问题描述

在Asp.Net MVC 3我已覆盖MvcRouteHandler和MvcHandler包括处理URL的子域部分。

但它似乎永远不会调用MvcHandler的ProcessRequest方法。

 公共类SubDomainMvcRouteHandler：MvcRouteHandler
{
    保护覆盖的IHttpHandler GetHttpHandler（System.Web.Routing.RequestContext的RequestContext）
    {
        返回新SubDomainMvcHandler（RequestContext的）;
    }
}
 

---

 公共类SubDomainMvcHandler：MvcHandler
{
    公共SubDomainMvcHandler（RequestContext的上下文）
        ：基座（上下文）
    {
    }    保护覆盖无效的ProcessRequest（HttpContextBase HttpContext的）
    {
        字符串[] = hostNameParts httpContext.Request.Url.Host.Split（'。'）;        INT长度= hostNameParts.Length  -  3;        的for（int i =长度; I＆GT; = 0;我 - ）
        {
            如果（hostNameParts [I]！=WWW）
                RequestContext.RouteData.Values​​.Add（子域+（长度 -  I + 1），hostNameParts [0]）;
        }        base.ProcessRequest（HttpContext的）;
    }
}
 

---

 公共静态无效的RegisterRoutes（RouteCollection路线）
    {
        routes.IgnoreRoute（{}资源个.axd / {*} PATHINFO）;        routes.MapRoute（
            默认，//路线名称
            {控制器} / {行动} / {ID}，// URL带参数
            新{控制器=家，行动=索引，ID = UrlParameter.Optional} //参数默认
        ）.RouteHandler =新SubDomainMvcRouteHandler（）;    }
 

解决方案

您应该重写 BeginProcessRequest ，它具有以下签名：

 保护覆盖的IAsyncResult BeginProcessRequest（HttpContextBase的HttpContext，AsyncCallback的回调，对象的状态）
 

On Asp.Net MVC 3 I have overwritten the MvcRouteHandler and MvcHandler to include handling the subdomain part of the Url.

However it never seems to call ProcessRequest method of MvcHandler.

public class SubDomainMvcRouteHandler : MvcRouteHandler
{
    protected override IHttpHandler GetHttpHandler(System.Web.Routing.RequestContext requestContext)
    {
        return new SubDomainMvcHandler(requestContext);
    }
}

---

public class SubDomainMvcHandler : MvcHandler
{
    public SubDomainMvcHandler(RequestContext context)
        : base(context)
    {
    }

    protected override void ProcessRequest(HttpContextBase httpContext)
    {
        string[] hostNameParts = httpContext.Request.Url.Host.Split('.');

        int length = hostNameParts.Length - 3;

        for (int i = length; i >= 0; i--)
        {
            if (hostNameParts[i] != "www")
                RequestContext.RouteData.Values.Add("SubDomain" + (length - i + 1), hostNameParts[0]);
        }

        base.ProcessRequest(httpContext);
    }
}

---

public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            "Default", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
        ).RouteHandler = new SubDomainMvcRouteHandler();

    }

解决方案

You should override BeginProcessRequest, which has the following signature:

protected override IAsyncResult BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, object state)

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