How can I access a resource when running an SBT runTask? - scala

Question

I've got an XML file that I need to read from the classpath in order to load some test data for my project with DBUnit when running a custom runTask in SBT.
The XML file is located in /src/main/resources and is copied properly to the /target/scala_2.8.1/classes during the build, but I get a MalformedURLException when trying to access it.
The weird thing is, I can access the file when this data loading functionality was part of my Scala specs unit tests.
Any ideas?

Answer 1

In my case the problem was that I used getClass.getResourceAsStream() in early initialiser. Had to specify the class explicitly with Class.forName() to solve it: Class.forName(<class name>).getResourceAsStream("/data.xml")

Answer 2

If the error is saying that the URL is malformed, it's probably true.
Here's a code I use to grab file from resource during test:
def copyFileFromResource(source: String, dest: File) {
val in = getClass.getResourceAsStream(source)
val reader = new java.io.BufferedReader(new java.io.InputStreamReader(in))
val out = new java.io.PrintWriter(new java.io.FileWriter(dest))
var line: String = null
line = reader.readLine
while (line != null) {
out.println(line)
line = reader.readLine
}
in.close
out.flush
}