Compojure：访问文件系统

发布于 2024-12-11 06:47:11 字数 1507 浏览 0 评论 0原文

这是我的project.clj 文件：

(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)

这是我的路由：

(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 Web 静态文件，我可以访问它们。在代码中，我还需要访问文件系统上位于 /resources/data 和 /resources/tpl 上的一些文件。使用leinring服务器或lein run，以下调用工作正常，

(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，它失败了，我得到一个 FileNotFoundException。也许这是因为在 lein 中，当前工作目录是项目根目录，而在 Tomcat 中，它是 Tomcat 的 bin 目录。

例如，我有 /resources/data/data.dat 在战争中打包为 /data/data.dat 所以要么“resources/data/data.dat " 在 Tomcat 下不起作用或 "data/data.dat" 在开发中不起作用。

顺便问一下，在 Compojure 中管理这个问题的正确方法是什么？谢谢。

原文

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)

and this my routing:

(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"))

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")

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.

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.

By the way, what is the proper way of managing this in Compojure? Thanks.

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不顾 2024-12-18 06:47:11

您可以使用 clojure.java.io/resource 来访问资源，无论它们位于本地文件系统上，还是打包在 jar/war 中：

(require '[clojure.java.io :as io])
(io/reader (io/resource "public/some/file.txt")) ; file in resource classpath or $root/resources/public...

您可能不应该尝试从目录加载它们，因为当从 jar/war 部署文件时，您无法确定文件最终会在哪里（或者即使它可能位于文件系统上）。

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...

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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