Question

我已经使用noir框架创建了一个用于clojure的web项目，并且想要尝试使用pre-route宏。

这是我的test.clj

(ns website.views.test  
(:require [website.views.common :as common] [noir.content.getting-started])  
(:use [noir.core :only [defpage]])  
(:use [hiccup.core :only [html]])  
(:require noir.core))  

(defn is-admin? [] false)
(pre-route '/admin/*' (when-not (is-admin?) (redirect '/login')))     
(defpage "/login" [] (common/layout [:p "login to website"]))
(defpage "/admin" [] (common/layout [:p "Welcome to admin page"]))        
(defpage "/admin/test1" [] (common/layout [:p "Welcome to admin test1 page"]))        
(defpage "/admin/test2" [] (common/layout [:p "Welcome to admin test2"]))

执行'lein run'时，我得到以下堆栈跟踪

Caused by: java.lang.RuntimeException: Invalid token: /admin/*'
at clojure.lang.Util.runtimeException(Util.java:170)
at clojure.lang.LispReader.interpretToken(LispReader.java:321)
at clojure.lang.LispReader.read(LispReader.java:206)
at clojure.lang.LispReader$WrappingReader.invoke(LispReader.java:537)
at clojure.lang.LispReader.readDelimitedList(LispReader.java:1126)
at clojure.lang.LispReader$ListReader.invoke(LispReader.java:962)
at clojure.lang.LispReader.read(LispReader.java:180)
at clojure.lang.Compiler.load(Compiler.java:6949)
... 51 more

知道这个异常的原因是什么（当我注释掉路由前的宏时不会发生这种情况）？

Answer 1

(pre-route '/admin/*' (when-not (is-admin?) (redirect '/login')))

应该是：

(pre-route "/admin/*" (when-not (is-admin?) (redirect "/login")))

因为'是引用的读者宏。

使用clojure pre-route设置过滤器不起作用

1 个答案: