CODEWITHSUNDEEP
clojure
Mamun
Mamun

Reputation: 512

Clojure: How does clojure.java.io/resource load file?

Could clojure.java.io/resource load file from classpath but outside of the jar file? When I put file within jar file, it'd load file but when I put file outside jar but in classpath it'd not load file.

Example

Jar name: hello.jar within jar there is file hello.txt 

java -jar hello.jar

I saw no problem to read file hello.txt file using line bellow

(->
  "hello.txt"
  (clojure.java.io/resource)
  (clojure.java.io/file)
  (slurp))

But when I put hello.txt outside of the jar but in classpath, it fails to load file. 

java -cp . -jar hello.jar

hello.txt file in same directory with hello.jar file.

Br, Mamun

Upvotes: 5

Views: 1562

Answers (1)

sw1nn
sw1nn

Reputation: 7328

You can't mix -cp and -jar cmdline arguments in that way. You can either do...

java -cp ".:hello.jar" com.foo.Class  # should use ; instead of : on Windows

or add a 

Class-Path: /some/dir/with/hello /some/dir/with/hello/hello.jar

entry to the jar META-INF/MANIFEST.MF file that includes local directory.(details)

I would recommend you don't use . as the directory, since this will be prone to errors or maybe security issues if the jar file moves.

Upvotes: 3

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