C# 如何创建www.domain.com/product MVC路由

我正在尝试创建一个

http://www.domain.com/product

路线。 它应该在数据库中查找产品名称，如果找到，则调用控制器，如果没有，则转到下一个路由

我已经尝试创建下面的路由，但是如果在数据库中找不到

{shortcut}

产品名称，我无法确定如何遵循下一个路由

routes.MapRoute(
  name: "easyshortcut",
  url: "{shortcut}",
  defaults: new { controller = "Home", action = "Product" }
);

---

谢谢

您可以通过路由约束来执行此操作：

routes.MapRoute(
    name: "easyshortcut",
    url: "{shortcut}",
    defaults: new { controller = "Home", action = "Product" },
    constraints: new { name = new ProductMustExistConstraint() }
);

public class ProductMustExistConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, 
        Route route, 
        string parameterName, 
        RouteValueDictionary values, 
        RouteDirection routeDirection)
    {
        var productNameParam = values[parameterName];
        if (productNameParam != null)
        {
            var productName = productNameParam.ToString();

            /* Assuming you use Entity Framework and have a set of products 
             * (you can replace with your own logic to fetch the products from 
             *  the database). 
             */

            return context.Products.Any(p => p.Name == productName);
        }

        return false;

    }
}

其中

name

是

HomeController

的产品操作中的参数名称

然后实现约束：

routes.MapRoute(
    name: "easyshortcut",
    url: "{shortcut}",
    defaults: new { controller = "Home", action = "Product" },
    constraints: new { name = new ProductMustExistConstraint() }
);

public class ProductMustExistConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, 
        Route route, 
        string parameterName, 
        RouteValueDictionary values, 
        RouteDirection routeDirection)
    {
        var productNameParam = values[parameterName];
        if (productNameParam != null)
        {
            var productName = productNameParam.ToString();

            /* Assuming you use Entity Framework and have a set of products 
             * (you can replace with your own logic to fetch the products from 
             *  the database). 
             */

            return context.Products.Any(p => p.Name == productName);
        }

        return false;

    }
}

（以上内容已根据此情况进行了调整。）