Compojure:访问文件系统 [英] Compojure: access filesystem
问题描述
这是我的project.clj档案:
this is my project.clj file:
(defproject org.github.pistacchio.deviantchecker "0.9.0"
:description "A one page application for keeping track of changes on deviantart.com gallieries"
:dependencies [[org.clojure/clojure "1.2.1"]
[org.clojure/clojure-contrib "1.2.0"]
[enlive "1.0.0"]
[compojure "0.6.4"]
[ring/ring-jetty-adapter "1.0.0-beta2"]]
:dev-dependencies [[lein-ring "0.4.6"]]
:ring {:handler org.github.pistacchio.deviantchecker.core/app}
:main org.github.pistacchio.deviantchecker.core)
这个我的路由:
(defroutes main-routes
(GET "/" [] (get-home))
(GET "/add" [d] (add-gallery d))
(GET "/delete" [d] (delete-gallery d))
(GET "/check" [d] (check-gallery d))
(route/resources "/")
(route/not-found "Page not found"))
我在 / resources / public
中有一些网络静态文件,我可以访问它们。在代码中我还需要访问位于 / resources / data
和 / resources / tpl $ c上的文件系统上的一些文件$ c>。使用
lein ring
服务器或 lein run
,以下调用工作正常
I have some web static files in /resources/public
and I can access them. In the code I also need o access some files on the file system that are located on /resources/data
and /resources/tpl
. Using lein ring
server or lein run
, the following call works fine
(java.io.File. "resources/tpl/home.html")
但是当使用 lein uberwar
打包应用程序并在Tomcat下部署时会失败,并且会收到FileNotFoundException。也许这是因为使用lein 当前工作目录是项目根目录,而在Tomcat下是Tomcat的bin目录。
but when packing the application with lein uberwar
and deploying under Tomcat it fails and I get a FileNotFoundException. Maybe this is because with lein the current working directory is the project root while under Tomcat it is Tomcat's bin directory.
/resources/data/data.dat
在战争中包装为 /data/data.dat
resources / data / data.dat在Tomcat下不起作用,或者data / data.dat在开发中不起作用。
For example, I have /resources/data/data.dat
that gets packed in the war as /data/data.dat
so either "resources/data/data.dat" doesn't work under Tomcat or "data/data.dat" doesn't work in development.
在Compojure管理这个正确的方法?
By the way, what is the proper way of managing this in Compojure? Thanks.
推荐答案
您可以使用 clojure.java.io/resource
访问资源,无论它们是在本地文件系统还是包装在jar / war中:
You can use clojure.java.io/resource
to access resources whether they're on the local file system, or packed in a jar/war:
(require '[clojure.java.io :as io])
(io/reader (io/resource "public/some/file.txt")) ; file in resource classpath or $root/resources/public...
您可能不应尝试从目录中加载它们,因为你不能确定文件从jar / war部署到哪里(或者根本不在文件系统上)。
You probably shouldn't try to load them from a directory, since you can't be sure where the file is going to end up when its deployed from a jar/war (or even if it's on the file system at all, probably).
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