ASP.NET MVC5路由错误：适用于一种操作，但不适用于另一种操作

Question

我有3个动作；类别，标记和搜索具有相同类型的路由签名，但路由以不同的值开头。

现在只有类别可以正常工作，而其他两个则不能。

搜索操作显示：URL和页面加载中的localhost/search?s=SOMEWORD。

但是标签操作给我一个错误：The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

我希望我的路线为localhost/{action}/{someWord}，但不能。

控制器操作：

public ActionResult Category(string category, int p = 1)
    {
        //some caculations
        return View("List", viewModel);
    }


    public ActionResult Tag(string tag, int p = 1)
    {
        //some caculations
        return View("List", viewModel);
    }

    public ActionResult Search(string s, int p = 1)
    {
        //some caculations
        return View("List", viewModel);
    }

RouteConfig：

routes.MapRoute(
            "Category",
            "Category/{category}",
            new { controller = "Blog", action = "Category" }
        );

        routes.MapRoute(
            "Tag",
            "Tag/{tag}",
            new { controller = "Blog", action = "Tag" }
        );

        routes.MapRoute(
            "Search",
            "Search/{s}",
            new { controller = "Blog", action = "Search" }
        );