Asp.Net webpages 扩展自定义路由，满足各类需求 WebPageRouteHandler.cs

一、使用方法

1、_AppStart.cshtml 设置路由

RouteTable.Routes.MapWebPageRoute("{url}.html", "~/webCity.cshtml", new { url = "" });

这个大家可以自由发挥，根据自己实际需求。

2、webCity.cshtml 获取参数

var urls = Context.GetRouteValue("url");

就这么简单。

3、WebPageRouteHandler.cs 核心代码

这个文件嘛，根据自己去修改吧，我做简单的网站不太喜欢用命名空间。

文件放在App_Code目录下

二、文件代码

 1 using System;
 2 using System.Globalization;
 3 using System.Web;
 4 using System.Web.Routing;
 5 using System.Web.WebPages;
 6 
 7 public class WebPagesRouteHandler : IRouteHandler {
 8     private readonly string _virtualPath;
 9     private Route _routeVirtualPath;
10    
11     public WebPagesRouteHandler(string virtualPath) {
12         _virtualPath = virtualPath;    
13     }
14    
15     private Route RouteVirtualPath {
16         get {
17             if (_routeVirtualPath == null) {
18                 _routeVirtualPath = new Route(_virtualPath.Substring(2), this);
19             }
20             return this._routeVirtualPath;
21         }
22     }
23    
24     public IHttpHandler GetHttpHandler(RequestContext requestContext) {
25         var substitutedVirtualPath = GetSubstitutedVirtualPath(requestContext);
26         int index = substitutedVirtualPath.IndexOf('?');
27         if (index != -1) {
28             substitutedVirtualPath = substitutedVirtualPath.Substring(0, index);
29         }
30         requestContext.HttpContext.Items[ContextExtensions.RouteKey] = requestContext.RouteData.Values;
31         return WebPageHttpHandler.CreateFromVirtualPath(substitutedVirtualPath);
32     }
33    
34     public string GetSubstitutedVirtualPath(RequestContext requestContext) {
35         VirtualPathData virtualPath = RouteVirtualPath.GetVirtualPath(requestContext, requestContext.RouteData.Values);
36         if (virtualPath == null) {
37             return _virtualPath;
38         }
39         return ("~/" + virtualPath.VirtualPath);
40     }
41 }
42 
43 public static class RouteCollectionExtension {
44     public static void MapWebPageRoute(this RouteCollection routeCollection, string routeUrl, string virtualPath, object defaultValues = null, object constraints = null, string routeName = null) {
45         routeName = routeName ?? routeUrl;
46        
47         Route item = new Route(routeUrl, new RouteValueDictionary(defaultValues), new RouteValueDictionary(constraints), new WebPagesRouteHandler(virtualPath));
48         routeCollection.Add(routeName, item);
49     }  
50 }
51 
52 public static class ContextExtensions {
53     internal const string RouteKey = "__Route";
54     public static string GetRouteValue(this HttpContextBase context, string key) {
55         var route = context.Items[RouteKey] as RouteValueDictionary;
56         if (route != null) {
57             var routeValue = route[key];
58             return routeValue != null ? routeValue.ToString() : null;
59         }
60         return null;
61     }
62 }

具体代码就不解释了。不明白的朋友可以在评论区留言。

 

posted @ 2019-08-06 18:16  jiachunhui  阅读(332)  评论(0)    收藏  举报