Haskell 是的，没有路由到处理程序

我正在使用堆栈工具使用搭建的YesSOD（

YesSOD 1.4.1.5

）应用程序。我找不到新的工作路线

# config/routes
/static StaticR Static appStatic
/auth   AuthR   Auth   getAuth

/favicon.ico FaviconR GET
/robots.txt RobotsR GET

/trails TrailsR  GET

/ HomeR          GET POST

然后我定义了以下模块：

-- Handler/Trails.hs
module Handler.Trails where

import Import
--import Yesod.Form.Bootstrap3 (BootstrapFormLayout (..), renderBootstrap3,
--                              withSmallInput)

getTrailsR :: Handler Html
getTrailsR = defaultLayout $ do
    setTitle "Welcome To Yesod!"
    $(widgetFile "trails")

我创建了跟踪模板文件：

-- templates/trails.hamlet
<h1>All Trails A-Z

<ul>
  <li>Hi

我确保在项目的

onh.cabal

中注册该模块，以下是完整的库节：

library
    hs-source-dirs: ., app
    exposed-modules: Application
                     Foundation
                     Import
                     Import.NoFoundation
                     Model
                     Settings
                     Settings.StaticFiles
                     Handler.Common
                     Handler.Home
                     Handler.Trails

然后我像这样启动应用程序：

stack exec--yesod-devel

，但它仍然没有返回404:

$ curl -v localhost:3000/trails
* Hostname was NOT found in DNS cache
*   Trying ::1...
* connect to ::1 port 3000 failed: Connection refused
*   Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 3000 (#0)
> GET /trails HTTP/1.1
> User-Agent: curl/7.37.1
> Host: localhost:3000
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Transfer-Encoding: chunked
< Date: Mon, 31 Aug 2015 05:00:17 GMT
* Server Warp/3.1.2 is not blacklisted
< Server: Warp/3.1.2

$curl-v localhost:3000/台
*在DNS缓存中找不到主机名
*正在尝试：：1。。。
*连接到：：1端口3000失败：连接被拒绝
*正在尝试127.0.0.1。。。
*已连接到本地主机（127.0.0.1）端口3000（#0）
>GET/trails HTTP/1.1
>用户代理：curl/7.37.1
>主机：localhost:3000
>接受：*/*
>
未找到

---

我做错了什么？如何调试路由是否正确连接并连接到生成系统？

您可能会受到错误的影响。升级到yesod-bin-1.4.14应该可以解决这个问题。你能试试看它是否有效吗

$ curl -v localhost:3000/trails
* Hostname was NOT found in DNS cache
*   Trying ::1...
* connect to ::1 port 3000 failed: Connection refused
*   Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 3000 (#0)
> GET /trails HTTP/1.1
> User-Agent: curl/7.37.1
> Host: localhost:3000
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Transfer-Encoding: chunked
< Date: Mon, 31 Aug 2015 05:00:17 GMT
* Server Warp/3.1.2 is not blacklisted
< Server: Warp/3.1.2