如果 URL 包含至少一个减号，则在 MVC 中验证 MapRoute

Question

我正在使用 MVC，我想向路由添加约束并仅在 URL 看起来像这样时才进行验证：

mysite/example-of-url-with-minus-sign

所以我需要这样的东西：

routes.MapRoute(name: "Categories", 
                url: "{category}", 
                defaults: new { controller = "Home", action = "Category" }, 
                constraints: new { category = @"[-]+" } 
       );

Answer 1

您可以这样定义约束：

routes.MapRoute(
    name: "DefaultWithMinus",
    url: "{cat}",
    defaults: new { controller = "Home", action = "WithMinus", cat = UrlParameter.Optional },
    constraints: new { cat = @"\w*-+\w*" }
);

HomeController 中的动作

public ActionResult WithMinus(string cat)
{
    return Content($"With Minus: {cat}");
}

结果：

http://localhost:49651/- => With Minus: -

http://localhost:49651/asdfds- => With Minus: asdfds-

http://localhost:49651/asdfds-sdfg => With Minus: asdfds-sdfg

http://localhost:49651/-sdfg => With Minus: -sdfg

Obs.: 此路由仅处理一个级别，因此如果您使用 www.site.com/fasdf-sadfsd/secondlevel 之类的东西，它将失败。

Obs².: 如果你需要更具体的东西，你应该创建你的自定义路由约束：http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/creating-a-custom-route-constraint-cs

如果 URL 包含至少一个减号，则在 MVC 中验证 MapRoute

Validate MapRoute in MVC if URL contains at least one minus sign

c#

regex

asp.net-mvc-routing