2.3  路由定义

§8 URLs and Routing

Before ASP.NET MVC, the core assumption of routing in ASP.NET (just like
in many other web application platforms) was that URLs correspond
directly to files on the server’s hard disk. The server executes and
serves the page or file corresponding to the incoming URL. Table 8–1
gives an example

公海赌船网址 1

如此那般, 限制会相当多, 有的人不想让旁人通晓自个儿文件的不二等秘书诀,



§8.1 Putting the Programmer Back in Control

ASP.NET MVC打破了这种规模, since ASP.NET MVC’s requests are handled by
controller classes (compiled into a .NET assembly), there are no
particular files corresponding to incoming

You are given complete control of your UPAJEROL schema—that is, the set of
U安德拉Ls that are accepted and their mappings to controllers and actions.

公海赌船网址 2

This is all managed by the framework’s routing


§8.1.1 About Routing and Its .NET Assemblies

The routing system was originally designed for ASP.NET MVC, but it was
always intended to be shared with other ASP.NET technologies,
including Web Forms.路线系统本来是给mvc自个儿用的,
所以路线代码是位于贰个独自的顺序集里(System.Web.Routing.dll in .NET
3.5, and simply System.Web.dll in .NET 4),并不是在System.Web.Mvc.dll


The following example shows how to use
the MapPageRoute method to create a route that has constraints that
limit what values can be included in the locale and year parameters. (In
an MVC application, you would use the MapRoute method.)

§8.2 Setting Up Routes

我们来探视路径的配备, 在global.asax.cs文件里

    public class MvcApplication : System.Web.HttpApplication
        public static void RegisterRoutes(RouteCollection routes)
                "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

        protected void Application_Start()

When the application first starts up (i.e., when Application_Start()
runs), the RegisterRoutes() method populates a global static
RouteCollection object called RouteTable.Routes. That’s where the
application’s routing configuration lives. The most important code is
that shown in bold: MapRoute() adds an entry to the routing
configuration. To understand what it does a little more clearly, you
should know that this call to MapRoute() is just a concise alternative
to writing the following:当应用程序运行的时候,也便是Application_Start()
鱼腥的时候, RegisterRoutes()
也是放置路线配置的地点.MapRoute是路径配置的入口, 为了轻松的认证,

            Route myRoute = new Route("{controller}/{action}/{id}", new MvcRouteHandler())
                Defaults = new RouteValueDictionary(new
                    controller = "Home",
                    action = "Index",
                    id = UrlParameter.Optional
            routes.Add("Default", myRoute);


公海赌船网址 3


§8.2.1  Understanding the Routing Mechanism

The routing mechanism runs early in the framework’s request processing
pipeline. Its job is to take an incoming UENVISIONL and use it to obtain an
IHttpHandler object that will handle the request.
早起的路由机制运维在框架的央求处理管道. 它的办事正是运用进来的UEscortL,
并用它来博取三个力所能致处理诉求的的IHttpHandler 对象

Many newcomers to the MVC Framework struggle with routing. It isn’t
comparable to anything in earlier ASP.NET technologies, and it’s easy
to configure wrong. By understanding its inner workings, you’ll avoid
these difficulties, and you’ll also be able to extend the mechanism
powerfully to add extra behaviors across your whole

The Main Characters: RouteBase, Route, and RouteCollection


  • RouteBase is the abstract base class for a routing entry.
    You can implement unusual routing behaviors by deriving a custom
    type from it (I’ve included an example near the end of this
    chapter), but for now you can forget about it.
  • Route is the standard, commonly used subclass of RouteBase
    that brings in the notions of URL templating, defaults, and
    constraints. This is what you’ll see in most examples.
  • A RouteCollection is a complete routing configuration. It’s
    an ordered list of RouteBase-derived objects (e.g., Route

How Routing Fits into the Request Processing Pipeline

When a U奥迪Q3L is requested, the system invokes each of the IHttpModules
registered for the application. 当一个U奥迪Q5L被呼吁,


The Order of Your Route Entries Is Important

If there’s one golden rule of routing, this is it: put
more-specific route entries before less-specific
假如有个路由计划的纯金准绳: 那么正是将别树一帜路线放在一般路线的前边.
因为系统的恰当由的算法是从最上部初始, 实际不是找最契合的.


§8.2.2  Adding a Route Entry

默许的路由是很常见的, 假若你想要管理任何体系的ULANDL, 你还亟需做一些手脚.
小编来举个轻松的事例, 譬如大家想要用U福睿斯L /Catalog来查看那个体系的保有产品

            routes.Add(new Route("Catalog", new MvcRouteHandler())
                Defaults = new RouteValueDictionary(
                new { controller = "Products", action = "List" }

大家能够用地方的这段代码来兑现我们的目的. 它能够支持我们落到实处/Catalog
或然是 /Catalog?some=querystring, 不过 /Catalog/Anythingelse


URL Patterns Match the Path Portion of a URL

公海赌船网址 4


Meet RouteValueDictionary

A different technique to populate a RouteValueDictionary is to
supply an IDictionary<string, object> as a constructor
parameter, or alternatively to use a collection initializer, as in the
following example:

            routes.Add(new Route("Catalog", new MvcRouteHandler())
                Defaults = new RouteValueDictionary
                    { "controller", "Products" },
                    { "action", "List" }


Take a Shortcut with MapRoute()

ASP.NET MVC adds an extension method to RouteCollection, called
MapRoute(). 你会发觉那比使用routes.Add(new Route(…)) 方便相当多.

            routes.MapRoute("PublicProductsList", "Catalog",
                new { controller = "Products", action = "List" });

In this case, PublicProductsList is the name of the route entry.
It’s just an arbitrary unique string. That’s optional.


§8.2.3  Using Parameters

As you’ve seen several times already, parameters can be accepted via a
curly brace syntax. 正像你眼下看到的, 参数能够放在{}里,

            routes.MapRoute(null, "category/{color}",
               new { controller = "Products", action = "List" });

This route will now match URLs such as /Catalog/yellow or
/Catalog/1234, and the routing system will add a corresponding
name/value pair to the request’s RouteData object. On a request
to /Catalog/yellow, for example, RouteData.Values[“color”] would be
given the value yellow


Receiving Parameter Values in Action Methods

You know that action methods can take parameters. When ASP.NET MVC
wants to call one of your action methods, it needs to supply a value
for each method parameter. One of the places where it can get values
is the RouteData collection. It will look in RouteData’s Values
dictionary, aiming to find a key/value pair whose name matches the
parameter name.

小编们精晓action方法能够带参数. 当mvc想要调用八个action方法,
它需求提供一个value给艺术的参数. 它获得value的多少个地点便是RouteData
So, if you have an action method like the following, its color
parameter would be populated according to the {color} segment parsed
from the incoming URL:

为此, 倘使你有个action方法像下边那样的,

        public ActionResult List(string color)
            // Do something

To be more precise, action method parameters aren’t simply taken
directly from RouteData.Values, but instead are fetched via the
model binding system, which is capable of instantiating and
supplying objects of any .NET type, including arrays and collections.
You’ll learn more about this mechanism in Chapters 9 and 12.
而是从模型绑定系统中拿走,各类.net类型. 你会在第9章和12章中打探越来越多.


§8.2.4  Using Defaults

You didn’t give a default value for {color}, so it became a mandatory
parameter. The Route entry no longer matches a request for /Catalog.
You can make the parameter optional by adding to your Defaults object:
在地点的例证中, 我们从没给{color}一个暗中同意值, 它成为了四个威吓的参数.
路由入口不再相称/Catalog 须要. 你可以

            routes.MapRoute(null, "Catalog/{color}",
                new { controller = "Products", action = "List", color = (string)null });

与上述同类, 路由就会相称/Category和/Category/orange了.

一经您想要贰个非null 的暗许值, 举例未有null的 int, 你能够显式的钦命值

            routes.Add(new Route("Catalog/{color}", new MvcRouteHandler())
                Defaults = new RouteValueDictionary(
                new { controller = "Products", action = "List", color = "Beige", page = 1 }

That’s a perfectly fine thing to do; it’s the correct way to set up
RouteData values that are actually fixed for a given Route
entry. For example, for this Route object,
RouteData[“controller”] will always equal “Products”, regardless
of the incoming URL, so matching requests will always be handled by

那般,不管道输送入的url是怎样, 相配必要总会被ProductsController管理.

Remember that when you use MvcRouteHandler (as you do by default
in ASP.NET MVC), you must have a value called controller; otherwise,
the framework won’t know what to do with the incoming request and will
throw an error. The controller value can come from a curly brace
parameter in the URL, or can just be specified in the Defaults object,
but it cannot be omitted.


Creating Optional Parameters with No Default Value

就疑似私下认可的路由配置, 大家得以钦定暗许值UrlParameter.Optional.

            routes.MapRoute(null, "Catalog/{page}",
                new { controller = "Products", action = "List", page = UrlParameter.Optional });

这么, 当访谈的U奥迪Q5L有page值的时候, 我们就利用传入的vallue, 若无,
为啥不用0只怕是null 作为暗许参数, 下边是它的八个原因:

  • If your action method takes a page parameter of type int, then
    because that type can’t hold null, you would have to supply the
    default value of 0 or some other int value. This means the action
    method would now always receive a legal value for page, so you
    wouldn’t be able to control the default value using the MVC
    Framework’s [DefaultValue] attribute or C# 4’s optional
    parameter syntax on the action method itself (you’ll learn more
    about these in the next chapter).
  • 要是您的action方法有个int类型的page参数,不过它是值类型,
    无法是null. 所以你必要提供三个暗许值(0大概是任何的值).
    那也认为着action方法总是要求三个官方的值, 所以,
  • Even if your action’s page parameter was nullable, there’s a
    further limitation. When binding incoming data to action method
    parameters, the MVC Framework prioritizes routing parameter values
    above query string values (you’ll learn more about value providers
    and model binding in Chapter 12). So, any routing value for
    page—even if it’s null—would take priority and hide any query
    string value called page.
  • 即时你的action的page参数能够是null类型. 这里还大概有个限制.
    当action方法的参数是binding类型的时候, mvc



§8.2.5  Using Constraints

不经常候, 你会想要增加额外的口径, 以十一分特定的route. 举例:

  • 您想相配get央求, 实际不是post央求
  • 有个别参数要协作特定的参数(e.g. ID参数必需合作数字类型)
  • 一对route用来相配常规的web浏览器发来的乞求,

In these cases, you’ll use the Route’s Constraints property


Matching Against Regular Expressions

为了保证参数是数字类型的, 大家应用这样的条条框框:

            routes.MapRoute(null, "Articles/{id}",
                new { controller = "Articles", action = "Show" },
                new { id = @"\d{1,6}" });

那般, route就能相称 /Articles/1 和 /Articles/123456 这两体系型,
并非别的的,(这里的正则表明式表示的是: 数字类型,1~6个)


Matching HTTP Methods

If you want your Route to match only GET requests (not POST
requests), you can use the built-in HttpMethodConstraint class (it
implements IRouteConstraint)—for example:

            routes.MapRoute(null, "Articles/{id}", 
                new { controller = "Articles", action = "Show" },
                new { httpMethod = new HttpMethodConstraint("GET") });

您想相称什么样的HTTP方法, 就把它放到HttpMethodConstraint构造器中,
比如,new HttpMethodConstraint(“GET”, “DELETE”).

您要注意的是 HttpMethodConstraint[HttpGet] and


Matching Custom Constraints

一旦前面的两种都无法满意你, 那么你还是能兑现它的.

        public class UserAgentConstraint : IRouteConstraint
            private string _requiredSubstring;
            public UserAgentConstraint(string requiredSubstring)
                this._requiredSubstring = requiredSubstring;
            public bool Match(HttpContextBase httpContext, Route route, string paramName,
            RouteValueDictionary values, RouteDirection routeDirection)
                if (httpContext.Request.UserAgent == null)
                    return false;
                return httpContext.Request.UserAgent.Contains(_requiredSubstring);


            routes.Add(new Route("Articles/{id}", new MvcRouteHandler()){
                Defaults = new RouteValueDictionary(new { controller = "Articles", action = "Show" }),
                Constraints = new RouteValueDictionary(
                    new { id = @"\d{1,6}", userAgent = new UserAgentConstraint("iPhone") }});


§8.2.6  Prioritizing Controllers by

§8.2.7  Accepting a Variable-Length
List of Parameters

§8.2.8  Matching Files on the Server’s
Hard Disk

§8.2.9  Using IgnoreRoute to Bypass the Routing System

public static void RegisterRoutes(RouteCollection routes)
    // Rest of routing config goes here

Here, {filename}.xyz is treated as a URL pattern just like in a normal
route entry, so in this example,
the routing system will now ignore any requests for /blah.xyz or
/foo.xyz?some=querystring. (Of course,
you must place this entry higher in the route table than any other
entry that would match and handle
those URLs.) You can also pass a constraints parameter if you want
tighter control over exactly which
URLs are ignored by routing.

此处{filename}.xyz 被用作三个UCR-VL模型, 就如三个家常的路由入口. 


9   版权


When routing handles URL requests, it
tries to match the URL of the request to a route. Matching a URL request
to a route depends on all the following conditions:

     U奥迪Q5N(Uniform Resources

<add key="RouteDebugger:Enabled" value="true" />


 If you adopt the MVC convention of
implementing controllers by creating classes that derive from the
ControllerBase class and giving them names that end with “Controller”,
you do not need to manually add routes in an MVC application. The
preconfigured routes will invoke the action methods that you implement
in the controller classes.


1.5  小结



公海赌船网址 5

If you want to add custom routes in an
MVC application, you use the MapRoute(RouteCollection, String, String)
method instead of the MapPageRoute(String, String, String)

1 @inherits System.Web.Mvc.WebViewPage
3 <h2>RouteDebugger调试</h2>
1  public  VirtualPathData GetVirtualPath(RequestContext requestContex,RouteValueDictionary values)
3  public  VirtualPathData GetVirtualPath(RequestContext requestContex,string name,RouteValueDictionary values)

 2.10 Scenarios When Routing Is Not



The following example shows the code that
creates default MVC routes in the Global.asax file, as defined in the
Visual Studio project template for MVC applications.

公海赌船网址 6




In a URL pattern, you define placeholders
by enclosing them in braces ( { and } ). You can define more than one
placeholder in a segment, but they must be separated by a literal value.
For example, {language}-{country}/{action} is a valid
route pattern. However, {language}{country}/{action} is not a valid pattern,
because there is no literal value or delimiter between the placeholders.
Therefore, routing cannot determine where to separate the value for
the language placeholder from the value for the country placeholder.






公海赌船网址 7


2.9  Adding Constraints to

3 路由概述(特性路由)

  3.2  U迈凯伦570L生成详解

You can avoid ambiguity in the patterns
by including constants, such as annual/{report}/{year} and
If a URL does not match any Route object
that is defined in the RouteTable collection, ASP.NET routing does not
process the request. Instead, processing is passed to an ASP.NET page,
Web service, or other ASP.NET endpoint.

公海赌船网址 8


公海赌船网址 9



2.11 How U君越Ls Are Matched to




 6.2 Class
Reference( 路由涉及到的重大类)



2.8 Handling a Variable Number of Segments
in a U奥迪Q3L Pattern(在USportageL格局中拍卖可变多少的段)

自然, 你也得以友善下载RouteDebugger.dll,
引用到web项目中, 然后手动在web.config中投入

     U传祺L (Uniform Resource


公海赌船网址 10公海赌船网址 11


5 路由调节和测量检验

     U奥迪Q7I(Uniform Resource



 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 6 using System.Web.Routing;
 8 namespace MVCDemo
 9 {
10     public class RouteConfig
11     {
12         public static void RegisterRoutes(RouteCollection routes)
13         {
14             routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); 
16             routes.MapRoute(
17                 name: "Default", 
18                 url: "{controller}/{action}/{id}", 
19                 defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
21            );
22         }
23     }
24 }




  • Any default values that you have
    provided for a route.

   Route 2 is set to







2.1  WebForm URL与Route URL






Sometimes you have to handle URL requests
that contain a variable number of URL segments. When you define a route,
you can specify that if a URL has more segments than there are in the
pattern, the extra segments are considered to be part of the last
segment. To handle additional segments in this manner you mark the last
parameter with an asterisk (*). This is referred to
as a catch-all parameter. A route with a
catch-all parameter will also match URLs that do not contain any values
for the last parameter. The following example shows a route pattern that
matches an unknown number of segments.




公海赌船网址 12


     (2)  简短;

     (6)  持久、无法改动

6 与路由相关的最首要命名空间和类

公海赌船网址 13

You can
also specify that routing should not handle certain URL requests. You
prevent routing from handling certain requests by defining a route and
specifying that the StopRoutingHandler class should be used to handle
that pattern. When a request is handled by a StopRoutingHandler object,
the StopRoutingHandler object blocks any additional processing of the
request as a route. Instead, the request is processed as an ASP.NET
page, Web service, or other ASP.NET endpoint. You can use the
RouteCollection.Ignore method  



2.5 Adding Routes to a Web Forms

 Typical URL Patterns in MVC

For MVC applications, overloads of the
RouteCollectionExtensions.MapRoute method, such as
MapRoute(RouteCollection, String, String, Object, Object), enable you to
specify defaults.

When routing handles a URL request, the
route definition shown in the previous example produces the results that
are listed in the following table.


Page ,Web服务,或其余ASP.NET端点。

公海赌船网址 14

译文:您能够透过满含常量来制止格局中的歧义,比方annual/{report}/{year} and monthly/{report}/{year}/{month}。

 公海赌船网址 15

1.4 UEvoqueL应怀有特色


When ASP.NET routing handles a URL
request, the route definition shown in the example produces the results
that are listed in the following table.



<add key="RouteDebugger:Enable" value="true'>

For example, suppose that you add routes
with the following patterns:


     (1)  域名便于纪念和拼写;

By default, routing does not handle
requests that map to an existing physical file on the Web server. For
example, a request for
http://server/application/Products/Beverages/Coffee.aspx is not handled
by routing if a physical file exists at Products/Beverages/Coffee.aspx.
Routing does not handle the request even if it matches a defined
pattern, such as {controller}/{action}/{id}.

  • 谢谢您的读书,若有不足之处,迎接指教,共同学习、共同进步。
  • 博主网站:http://www.cnblogs.com/wangjiming/。
  • 极少一些小说利用读书、参谋、援引、抄袭、复制和粘贴等三种艺术结合而成的,抢先53%为原创。
  • 如你喜欢,麻烦推荐一下;如您有新主见,应接提议,邮箱:2014177728@qq.com。
  • 能够转发该博客,但无法不盛名博客来源。

公海赌船网址 16公海赌船网址 17

公海赌船网址 18

2.12 路由二义性


When a request is received, it is routed
to the UrlRoutingModule object and then to the MvcHandler HTTP handler.
The MvcHandler HTTP handler determines which controller to invoke by
adding the suffix “Controller” to the controller value in the URL to
determine the type name of the controller that will handle the request.
The action value in the URL determines which action method to

公海赌船网址 19

 个性路由是在ASP.NET MVC
5中新添的,守旧路由ASP.NET MVC 第11中学就有了。

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 6 using System.Web.Routing;
 8 namespace MVCDemo
 9 {
10     public class RouteConfig
11     {
12         public static void RegisterRoutes(RouteCollection routes)
13         {
14             routes.MapMvcAttributeRoutes();//特性路由
16             routes.IgnoreRoute("{resource}.axd/{*pathInfo}");//忽略资源文件
18             routes.MapRoute(
19                 name: "Default",//路由名,唯一
20                 url: "{controller}/{action}/{id}",//路由URL
21                 defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },//路由URL默认值
22                 namespaces: new[] { "MVCDemo.Controllers" },//命名空间避免二义性
23                 constraints: new { id = @"^\d*$" }//约束
25                 );
26         }
27     }
28 }

When you define a route, you can assign a
default value for a parameter. The default value is used if a value for
that parameter is not included in the URL. You set default values for a
route by assigning a dictionary object to the Defaults property of the
Route class. The following example shows how to add a route that has
default values, by using the MapPageRoute(String, String, String,
Boolean, RouteValueDictionary) method.

2 路由概述(守旧路由)





     (4)  能够反映出站点布局;

protected void Application_Start(object sender, EventArgs e)

public static void RegisterRoutes(RouteCollection routes)

公海赌船网址 20公海赌船网址 21


some circumstances, ASP.NET routing does not handle a request even when
is enabled for the Web site. This section describes some scenarios in
which routing does not handle the request.








【04】Professional Asp.net MVC 5


In a Web Forms application, you create
routes by using the MapPageRoute(String, String, String) method of the
RouteCollection class. The MapPageRoute method creates a Route object
and adds it to the RouteCollection object. You specify properties for
the Route object in parameters that you pass to the MapPageRoute

MVC的贰个表征了,它早就超越那个界定,如ASP.NET Dynamic

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 7 namespace MVCDemo.Controllers.NewFolder1
 8 {
 9     public class RouteDemoController : Controller
10     {
11         //
12         // GET: /RouteDemo/
13         public ActionResult Index()
14         {
15             return Content("路由二义性测试");
16         }
17     }
18 }


Manager Console窗口中动用NuGet安装就可以,命令Install-Package

 6.1  路由涉及的命名空间


  • 译文:您为有些路由提供的别的暗中同意值。
  • Any constraints that you have
    provided for a route.

  • 译文:您为路线所提供的另外自律。

  • Whether you have defined routing to
    handle requests that match a physical file.

  • 译文:是不是定义了路由来拍卖与物理文件相配的伏乞。

公海赌船网址 22

Constraints are defined by using regular
expressions or by using objects that implement the IRouteConstraint
interface. When you add the route definition to the Routes collection,
you add constraints by creating a RouteValueDictionary object that
contains the verification test. The key in the dictionary identifies the
parameter that the constraint applies to. The value in the dictionary
can be either a string that represents a regular expression or an object
that implements the IRouteConstraint interface.





  • The route patterns that you have
    defined or the default route patterns, if any, that are included in
    your project type. 

  • 译文:您曾经定义的路由方式或暗中同意的路由形式,借使有的话,它们蕴涵在你的类型项目中。

  • The order in which you added them to
    the Routes collection.
  •  译文:您将它们增加到路由会集的各类。


 4.1 高档期的顺序要求的路由管道


公海赌船网址 23

8 参谋文献


 公海赌船网址 24



公海赌船网址 25

A Physical File is Found that Matches
the U君越L Pattern(找到与U普拉多L形式相配的大要文件)

Routing Is Explicitly Disabled for a
U汉兰达L Pattern(为U昂CoraL方式显式禁止使用路由)


3 路由生成U牧马人L

      You add the route to the
application by adding the Route object to the static Routes property of
the RouteTable class. The Routes property is a RouteCollection object
that stores all the routes for the application.You typically do not have
to write code to add routes in an MVC application. Visual Studio project
templates for MVC include preconfigured URL routes. These are defined in
the MvcApplication class, which is defined in the
Global.asax file.

2.7 Setting Default Values for U奥迪Q5L

 译文:路由是一种被映射到某些管理程序的UAMG ONEL形式。管理程序只怕是贰个物理文件,如在WebForms运用程序中的aspx文件。管理程序也说不定是贰个管理央浼的类,如MVC应用程序中的调节器。要定义路由,您能够因而点名U奇骏L形式、处理程序和路径的名目来创立路由类的实例。

 1.2 UTucsonI、U陆风X8L和UTiguanN三者之间的涉及图

The following example shows code from a
Global.asax file that adds a Route object that defines two URL
parameters named action and categoryName. URLs that have the specified
pattern are directed to the physical page named Categories.aspx.

公海赌船网址 26


A URL pattern can contain literal values
and variable placeholders (referred to as URL
parameters). The literals and placeholders are located in segments of the URL which are delimited by the slash
(/) character.

 通常情形下,U库罗德I代表同意能源标记符(Uniform Resource

If you provide a string, routing treats
the string as a regular expression and checks whether the parameter
value is valid by calling the IsMatch method of the Regex class. The
regular expression is always treated as case-insensitive. For more
information, see .NET Framework Regular Expressions.

The following table shows the default URL
patterns, and it shows examples of URL requests that are handled by the
default routes.

公海赌船网址 27

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 7 namespace MVCDemo.Controllers
 8 {
 9     public class RouteDemoController : Controller
10     {
11         //
12         // GET: /RouteDemo/
13         public ActionResult Index()
14         {
15             return View();
16         }
17     }
18 }


Default values are used if a parameter is
missing from the request. Therefore, they can cause a route to match a
request that you did not expect. For example, suppose that you add
routes with the following patterns:
Route 1: {report}/{year}/{month}, with
default values for year and month.
Route 2: {report}/{year}, with a default
value for year.
Route 2 will never handle a request.
Route 1 might be intended for a monthly report, and Route 2 might be
intended for an annual report. However, the default values in Route 1
mean that it will match any request that could also work for Route

4.2 路由数量


4 路由绑定到操作



 3.1 U奥迪Q3L生成的高层系概述

 公海赌船网址 28

2.6 Adding Routes to an MVC



For IIS 7.0, no file-name extension is
needed. For IIS 6.0, you must add the .mvc file-name extension to the
URL pattern, as in the following example:

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 7 namespace MVCDemo.Controllers
 8 {
 9     public class RouteDemoController : Controller
10     {
11         //
12         // GET: /RouteDemo/
13         public ActionResult Index()
14         {
15             return View();
16         }
17     }
18 }

译文:路线2设置为 products/show/{id}
Route 2 will never handle a request
because Route 1 is evaluated first, and it will always match requests
that could also work for Route 2. A request for
http://server/application/products/show/bikes seems to match Route 2
more closely, but it is handled by Route 1 with the following
controller is products.
action is show.
id is bikes.


2.4 URL Patterns(URL模式)

1.3 对UKoleosI、U奇骏L和UENVISIONN三者之间剖析

1 public static void RegisterRoutes(RouteCollection routes)
2 {
3   routes.Ignore("{resource}.axd/{*pathInfo}");
4 }

译文:暗许意况下,路由不管理映射到Web服务器上存活物理文件的央求。比如,要是存在 Products/Beverages/Coffee.aspx.物理文件,央浼http://server/application/Products/Beverages/Coffee.aspx
If you want routing to handle all
requests, even requests that point to files, you can override the
default behavior by setting the RouteExistingFiles property of the
RouteCollection object to true. When you set this value to true, all
requests that match a defined pattern are handled by routing.



 1 public static void RegisterRoutes(RouteCollection routes)
 2 {
 3     routes.MapPageRoute("",
 4         "Category/{action}/{categoryName}",
 5         "~/categoriespage.aspx",
 6         true,
 7         new RouteValueDictionary 
 8             {{"categoryName", "food"}, {"action", "show"}},
 9         new RouteValueDictionary 
10             {{"locale", "[a-z]{2}-[a-z]{2}"},{"year", @"\d{4}"}}
11        );
12 }

公海赌船网址 29

        ASP.NET 路由分歧于其余 U卡宴L
重写方案。U汉兰达L 重写通过在将诉求发送到网页在此之前实际更动 UEvoqueL
来管理传入央浼。举个例子,多个应用 UPRADOL 重写的应用程序或许会将 U兰德途锐L 从 /Products/Widgets/ 退换为 /Products.aspx?id=4。其余,U索罗德L 重写经常未有相应的 API
来成立基于格局的 UENVISIONL。在 U中华VL 重写中,如若更动了 UTucsonL
情势,则必得手动更新包涵原始 UENCOREL 的有着超链接。由于
ASP.NET 路由得以从 U福特ExplorerL 提取值,所以拍卖传入乞求时不更换U凯雷德L。借使非得创立一个 UXC90L,则将参数值传递到为你生成 URubiconL
的措施中。若要改造 U途观L

For example, a URL that includes the URL
path /Products is mapped to a controller named ProductsController. The value in the action parameter is the name of the action method that
is called. A URL that includes the URL path /Products/show would result in a call to the Showmethod of the ProductsController class.





   Route 1 is set to


When a request is made, the URL is parsed
into segments and placeholders, and the variable values are provided to
the request handler. This process is similar to the way the data in
query strings is parsed and passed to the request handler. In both cases
variable information is included in the URL and passed to the handler in
the form of key-value pairs. For query strings both the keys and the
values are in the URL. For routes, the keys are the placeholder names
defined in the URL pattern, and only the values are in the URL.

Typically, you add routes in a method
that is called from the handler for the Application_Start event in the
Global.asax file. This approach makes sure that the routes are available
when the application starts. It also enables you to call the method
directly when you unit-test the application. If you want to call a
method directly when you unit-test the application, the method that
registers the routes must be static (Shared in Visual Basic) and must
have a RouteCollection parameter.

 1.1 URI、URL和URN定义 



     (3)  便于输入;


The route with the pattern {resource}.axd/{*pathInfo} is included to prevent requests
for the Web resource files such as WebResource.axd or ScriptResource.axd
from being passed to a controller.


 URL patterns for routes in MVC
applications typically include {controller} and {action} placeholders.

2.2  ASP.NET 路由与 URL 重写



NuGet Packages”-“Online”输入”RouteDebugger”然后”Install”.

The following table shows valid route
patterns and examples of URL requests that match the patterns.


 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Mvc;
 6 using System.Web.Routing;
 8 namespace MVCDemo
 9 {
10     public class RouteConfig
11     {
12         public static void RegisterRoutes(RouteCollection routes)
13         {
14             routes.MapMvcAttributeRoutes();//
16             routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
18             routes.MapRoute(
19                 name: "Default",
20                 url: "{controller}/{action}/{id}",
21                 defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
22             );
23         }
24     }
25 }

7 总结

void Application_Start(object sender, EventArgs e) 

public static void RegisterRoutes(RouteCollection routes)
        new RouteValueDictionary 
            {{"categoryName", "food"}, {"action", "show"}});

/ query / { queryname } { * queryvalues

In addition to matching a URL request to
a route definition by the number of parameters in the URL, you can
specify that values in the parameters meet certain constraints. If a URL
contains values that are outside the constraints for a route, that route
is not used to handle the request. You add constraints to make sure that
the URL parameters contain values that will work in your


public class MvcApplication : System.Web.HttpApplication
    public static void RegisterRoutes(RouteCollection routes)

            "Default",                                              // Route name 
            "{controller}/{action}/{id}",                           // URL with parameters 
            new { controller = "Home", action = "Index", id = "" }  // Parameter defaults


    protected void Application_Start()

When ASP.NET routing handles a URL
request, the route definition shown in the example (with default values
of food for categoryName and showfor action) produces the results that
are listed in the following table.

        A route is a URL pattern that is mapped to a handler.
The handler can be a physical file, such as an .aspx file in a Web Forms
application. A handler can also be a class that processes the request,
such as a controller in an MVC application. To define a route, you
create an instance of the Route class by specifying the URL pattern, the
handler, and optionally a name for the route.


译文:比如,一个带有UOdysseyL路线  /产品
的UPAJEROL映射到二个名称叫ProductsController的调整器。action参数中的值是调用的操作方法的称号。叁个包涵UWranglerL路线  /产品/show

页面来管理的,网络页面,Web服务,或别的ASP.NET端点。您能够选择 RouteCollection.Ignore方法。

If you provide an IRouteConstraint
object, ASP.NET routing checks whether the parameter value is valid by
calling the Match method of the IRouteConstraint object. The Match
method returns a Boolean value that indicates whether the parameter
value is valid.