Returns the real system path of WEB-INF

webinf_realpath.java

    /**
     * Returns the real system path of WEB-INF through a servlet
     * @return répertoire WEB-INF
     */
    public static String WEBINF_PATH() {
        String className = JoyConfigfileProvider.class.getName().replaceAll("\\.", "/") + ".class";
        // Use the ClassLoader to find the absolute path to this file.
        URL classPath = JoyConfigfileProvider.class.getClassLoader().getResource(className);
        //create a new File and go from file to parent file to find the WEB-INF directory
        File f = new File(classPath.getPath());
        while (f != null && !f.getName().equals("WEB-INF")) 
            f = f.getParentFile();
        //if the root is reached without finding the WEB-INF directory WEB-INF will equal null
        if (f != null)
            return f.getPath();
        else
            return "";
    }