1.简介
新建一个MVC项目，并添加Home和About两个控制器
在这两个控制器对应添加index页面
namespace Study_MVC_Route.Controllers{ ???public class HomeController : Controller ???{ ???????// GET: Home ???????public ActionResult Index() ???????{ ???????????return View(); ???????} ???????public string Regex(int year,int month,int day) ???????{ ???????????return $"{year}-{month}-{day}";
//$是在字符串中内嵌参数 ???????} ???}}namespace Study_MVC_Route.Controllers{ ???public class AboutController : Controller ???{ ???????// GET: About ???????public ActionResult Index() ???????{ ???????????return View(); ???????} ???}}在APP_Start文件夹下面的RouteConfig.cs，是MVC的路由配置文件
主要属性如下：
?name： 路由名称 ?url： 和url匹配的正则表达式，用{}表示一个参数变量，可以为空；无{}则是一个硬性的匹配要求 ?defaults： 默认，匹配上url后，若url参数为空，则使用默认动作 ??controller = 默认控制器, action = 默认动作, id = 参数
constraints: url参数约束using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using System.Web.Routing;namespace Study_MVC_Route{ ???public class RouteConfig ???{ ???????public static void RegisterRoutes(RouteCollection routes)//路由集，由上往下匹配路由 ???????{ ???????????routes.IgnoreRoute("{resource}.axd/{*pathInfo}");//忽略路由
???????????//--------------------------------添加路由------------------------------------------ ???????????//以Test开始的url
???????????//url没有引入controller参数，所以controller使用默认值，若不给参数赋值，也使用默认值 ???????????routes.MapRoute( ???????????????name: "Test", ???????????????url: "Test/{action}/{id}", ???????????????defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ???????????);
???????????//Route的书写可以省略命名参数，即name、url、defaults这些命名参数可以省略，如下 ???????????//url为About可以访问Home/Index ???????????routes.MapRoute("About1", "About", new { controller = "Home", action = "Index", id = UrlParameter.Optional }); ???????????//url为About访问About/Index ???????????routes.MapRoute("About2", "{controller}", new { controller = "Home", action = "Index", id = UrlParameter.Optional });//加大括号表示参数，不加则为一个普通字符串链接，是一个硬性的匹配要求
//传参对比 ???????????//使用constraints做参数约束 ???????????//home/Regex_2014_05_19 ???????????routes.MapRoute( ???????????????name: "Regex", ???????????????url: "{controller}/{action}_{year}_{month}_{day}", ???????????????defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }, ???????????????constraints: new { year = @"\d{4}", month = @"\d{2}", day = @"\d{2}" }// @"\d{4}"表示输入四位数字，@表取消\的转译效果 ???????????); //普通传参 ???????????//home/Regex?year=2014&month=05&day=19 ???????????routes.MapRoute( ???????????????name: "Default", ???????????????url: "{controller}/{action}/{id}", ???????????????defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ???????????); ???????} ???}}
MVC_Route层层深入
原文地址：https://www.cnblogs.com/wskxy/p/9217057.html