Accessing a resource file from a compiled JAR archive

One issue that I am facing involves the project structure of my Maven Java project. It follows a typical layout:

src/main/java - project .java files      
src/main/resources - project resources (log4j2.xml)
src/test/java - .java files for tests
src/test/resources - testng.xml file

In the src/main/java directory, there is a package containing JavaScript files (scripts that are executed programmatically in Java code) located at: src/main/java/js/scripts/

While I can access the *.js files within the 'scripts' folder when running tests using FileUtils.readFileToString(new File(pathTo_jsFile)), this functionality ceases to work after compiling the project with Maven.

  1. I am unable to compile the files to be placed inside the existing package (/js/scripts/) – the only way I have found to add non-Java files to the .jar is by including them as resources in the pom.xml, but then they are added to the root of the .jar file.

  2. I am also unable to read anything from within the .jar file.

javascriptjavamavenseleniumjar

Answer №1

To start, make sure to place your JavaScript files in the src/main/resources directory. When building with Maven, these files will be automatically included in the .jar file without any additional configuration needed. You can maintain your folder structure within the resources folder as well.

Next, you can access these resources in Java using the ClassLoader:

getClass().getClassLoader().getResourceAsStream("js/scripts/myScriptfile.js");

This code snippet allows you to retrieve the JavaScript file as an input stream. If you would rather get the URL of the file (which also works when it's packaged inside a JAR file), simply replace getResourceAsStream(...) with getResource(...).

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