首頁猿問第一個(gè)匹配路由必須同時(shí)指定控制器和操作？

第一個(gè)匹配路由必須同時(shí)指定控制器和操作？

C#

叮當(dāng)貓咪 2023-07-22 18:40:56

下面是我的代碼：//inside UseMvc method:routes.MapRoute( name: "NewRoute", template: "/", defaults: new { controller = "Home"});routes.MapRoute( name: "default", template: "{controller=Home}/{action=Index}/{id?}");我們知道路由系統(tǒng)只會找到第一個(gè)匹配的路由，所以第一個(gè)“NewRoute”應(yīng)該在應(yīng)用程序啟動(dòng)時(shí)匹配路由，因?yàn)樗鼪]有操作方法，所以我應(yīng)該得到一個(gè)404錯(cuò)誤頁面，但是當(dāng)我運(yùn)行應(yīng)用程序時(shí)，使用“默認(rèn)”路由，顯示正常頁面。那么為什么路由系統(tǒng)一開始就沒有選擇“NewRoute”呢？

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1 回答

qq_笑_17

TA貢獻(xiàn)1818條經(jīng)驗(yàn) 獲得超7個(gè)贊

事實(shí)是NewRoute先檢查，但路由找不到匹配的動(dòng)作。然后它會匹配下一個(gè)路由規(guī)則。

Debug如果您啟用日志記錄級別appSettings.Development.json

{

"Logging": {

"LogLevel": {

"Default": "Debug",

"System": "Information",

"Microsoft": "Debug"

}

并將啟動(dòng)CompatibilityVersion更改為2.1（asp.net core 2.2有另一種EndPoint機(jī)制）

services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

運(yùn)行應(yīng)用程序時(shí)，您可以在日志中看到整個(gè)過程：

dbug: Microsoft.AspNetCore.Routing.RouteBase[1]

Request successfully matched the route with name 'NewRoute' and template '/'

dbug: Microsoft.AspNetCore.Mvc.Internal.ActionSelector[3]

No actions matched the current request. Route values: controller=Home

dbug: Microsoft.AspNetCore.Mvc.Internal.MvcRouteHandler[3]

No actions matched the current request. Route values: controller=Home

dbug: Microsoft.AspNetCore.Routing.RouteBase[1]

Request successfully matched the route with name 'default' and template '{controller=Home}/{action=Index}/{id?}'

info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[3]

Route matched with {action = "Index", controller = "Home"}. Executing controller action with signature Microsoft.AspNetCore.Mvc.IActionResult Index() on controller Core22MVC.Controllers.HomeController (Core22MVC).

匹配兩次并選擇default路線。

反對回復(fù) 2023-07-22