MVC自定义路由02-实现IRouteConstraint限制控制器名

雨点打透心脏的1/2处 2021-11-02 12:36 232阅读 0赞

通过实现IRouteConstraint接口，实现对某个控制名进行限制。本篇把重点放在自定义约束，其余部分参考：

[MVC自定义路由01-为什么需要自定义路由][MVC_01-]

自定义约束前

using System.Web.Mvc;

using System.Web.Routing;

using MvcApplication2.Extension;

namespace MvcApplication2

{

public class RouteConfig

{

public static void RegisterRoutes(RouteCollection routes)

{

routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

//默认

routes.MapRoute(

name: "Default",

url: "{controller}/{action}/{id}",

defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }

);

}

效果

[![约束前][111114263703504.png]][111114263703504.png 1]

自定义约束后

□ 实现IRouteConstraint接口

using System;

using System.Web.Routing;

namespace MvcApplication2.Extension

{

public class ExcludeController : IRouteConstraint

{

private readonly string _controller;

public ExcludeController(string controller)

{

_controller = controller;

}

public bool Match(System.Web.HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)

{

//如果路由中拿到的controller值与约束设定的值相等，就返回false

return !string.Equals(values["controller"].ToString(), _controller, StringComparison.OrdinalIgnoreCase);

}

□ 路由添加约束

using System.Web.Mvc;

using System.Web.Routing;

using MvcApplication2.Extension;

namespace MvcApplication2

{

public class RouteConfig

{

public static void RegisterRoutes(RouteCollection routes)

{

routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

//默认

routes.MapRoute(

name: "Default",

url: "{controller}/{action}/{id}",

defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },

constraints: new { controller = new ExcludeController("RentalProperties") }

);

}

效果

[![约束后][111114271014416.png]][111114271014416.png 1]

可见，加上自定义约束后，带RentalProperties名称的控制器将被限制。

转载于:https://www.cnblogs.com/darrenji/p/3593483.html

[MVC_01-]: http://www.cnblogs.com/darrenji/p/3593085.html
[111114263703504.png]: https://images0.cnblogs.com/blog/417212/201403/111114263703504.png
[111114263703504.png 1]: /images/20211101/1c7383df4832416ea5c14a8f4c7c2218.png
[111114271014416.png]: https://images0.cnblogs.com/blog/417212/201403/111114271014416.png
[111114271014416.png 1]: /images/20211101/e097f7069f414b87b06e1db0c47b750e.png