ASP.NET MVC 中如何处理 ASP.NET WebForm 或其他历史遗留的 URL

当一个网站从 ASP.NET WebForm 转为 ASP.NET MVC 后，那些 URL 怎么办呢？

比如，原来通过 ~/articles/may/zebra-danio-health-tips.html 能访问某一个页面，那现在转为 ASP.NET MVC 了怎么办呢？

直接贴代码了：

1. 新建一个类，继承 RouteBase 类。

namespace DearBruce.LegacyUrlsRoute.MvcUI.Extensions
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Web;
using System.Web.Routing;
using System.Web.Mvc;

public class LegacyUrlsRoute : RouteBase
{
//可以从数据库中读取出原来的地址
private static IList<string> legacyUrls = new List<string>()
{
"~/articles/may/zebra-danio-health-tips.html",
"~/articles/VelociraptorCalendar.pdf",
"~/guides/tim.smith/BuildYourOwnPC_final.asp"
}.ToElementLower();

public override RouteData GetRouteData(HttpContextBase httpContext)
{
string url = httpContext.Request.AppRelativeCurrentExecutionFilePath.ToLower();
if (legacyUrls.Contains(url))
{
RouteData rd = new RouteData(this, new MvcRouteHandler());
rd.Values.Add("controller", "Home");
rd.Values.Add("action", "Old");
rd.Values.Add("url", url);
return rd;
}
else
{
return null; // Not a legacy URL
}
}

public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
return null;
}
}
}

2. 新建一个 List 泛型类的扩展方法。

namespace DearBruce.LegacyUrlsRoute.MvcUI.Extensions
{
using System;
using System.Collections.Generic;

public static class ListExtensions
{
/// <summary>
/// 返回每个小写的元素
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public static IList<string> ToElementLower(this IList<string> items)
{
if (items == null || items.Count == 0)
{
return items;
}
for (int i = 0; i < items.Count; i++)
{
items[i] = items[i].ToLower();
}
return items;
}
}
}

3. 在 Global.asax 配置路由

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

routes.Add("LegacyUrls", new DearBruce.LegacyUrlsRoute.MvcUI.Extensions.LegacyUrlsRoute());

routes.MapRoute(
"Default", // 路由名称
"{controller}/{action}/{id}", // 带有参数的 URL
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // 参数默认值
);

}

运行效果：



谢谢浏览！