readFile from resource folder

 

package com.qa.opencart.factory;

import java.io.File;

import java.net.URISyntaxException;

import java.net.URL;

public class ReadFile {

/*

    The resource URL is not working in the JAR

    If we try to access a file that is inside a JAR,

    It throws NoSuchFileException (linux), InvalidPathException (Windows)

    Resource URL Sample: file:java-io.jar!/json/file1.json

 */

private String getFileFromResource(String fileName) throws URISyntaxException{

    ClassLoader classLoader = getClass().getClassLoader();

    URL resource = classLoader.getResource(fileName);

    if (resource == null) {

        throw new IllegalArgumentException("file not found! " + fileName);

    } else {

        // failed if files have whitespaces or special characters

        //return new File(resource.getFile());

        return new File(resource.toURI()).getAbsolutePath();

    }

}

public static void main(String[] args) throws URISyntaxException {

// TODO Auto-generated method stub

String str =new ReadFile().getFileFromResource("log4j2.xml");

System.out.println(str);

}

}