clojure library code fails to load resource file when called from java

[fenton]

https://github.com/ftravers/PublicDocumentation/blob/master/clojure/resource-file.md

Reading a resource file

File/directory layout:

$ tree
.
|-- pom.xml
|-- project.clj
|-- README.md
`-- src
    |-- test_project
    |   `-- Core.clj
    `-- test.txt

Setting up this to be a library for use in Java. Here is my project.clj and my Core.clj

(defproject test-package/test-project "0.1.0-SNAPSHOT"
  :plugins [[lein-swank "1.4.4"]]
  :dependencies [[org.clojure/clojure "1.4.0"]]
  :main test-project.Core)

(ns test-project.Core
  (:gen-class
   :methods [[readFile [] String]]))
(defn read-file []
  (slurp (.getFile (clojure.java.io/resource "test.txt"))))
(defn -readFile [this]
  (read-file))

Now if I try to use this in the REPL

test-project.Core> (read-file)
"abc\n"

Works no problem. However when I try this from Java:

Core c = new Core();
c.readFile();

A FileNotFound exception is thrown:

java.io.FileNotFoundException: /home/fenton/.m2/repository/test-package/test-project/0.1.0-SNAPSHOT/test-project-0.1.0-SNAPSHOT.jar!/test.txt (No such file or directory)

Whereas:

InputStream stream =
this.getClass().getClassLoader().getResourceAsStream("test.txt");

Finds the file no problem. So whats the problem?

[Dave Ray]

slurp is happy to slurp from a URL, no need for the (.getFile) call on
the resource. In other words, the file returned for a resource that's
been compiled into a jar isn't very useful. Stick with the URL
returned bye clojure.java.io/resource.

Dave

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[fenton]

Thanks so much Dave that was it! :)