ASP.NET MVC3 中的UrlRewrite用法介绍

继承RouteBase后需要实现两个方法：

public override RouteData GetRouteData(HttpContextBase httpContext)
{
throw new NotImplementedException();
}

public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
throw new NotImplementedException();
}

public override RouteData GetRouteData(HttpContextBase httpContext)
{
string controller = "Home";
string action = "Index";
string id = "beijing";

var data = new RouteData(this, new MvcRouteHandler()); //声明一个RouteData，添加相应的路由值
data.Values.Add("controller", controller);
data.Values.Add("action", action);

// 获取请求的url
var url = httpContext.Request.Url;
if (url == null)
{
data.Values.Add("id", id);
return data;
}

string virtualPath = url.ToString();
string param = virtualPath.Replace("http://", "").Split('.')[0];

if (param.Equals("www"))
{
data.Values.Add("id", id);
return data;
}

id = param;
data.Values.Add("id", id);
return data;
}

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

// 【注意】url重写的调用加在这里
routes.Add(new UrlProvider());

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

}

public ActionResult Index(string id)
{
switch (id)
{
case "beijing":
ViewBag.CityName = "北京";
break;

case "shanghai":
ViewBag.CityName = "上海";
break;
}

string p1 = Request.QueryString["p1"];
string p2 = Request.QueryString["p2"];

ViewBag.P1 = p1;
ViewBag.P2 = p2;

return View();
}