Load Resource from inner folder (Spring boot)

LoadResourceInsideJar.java

public class LoadResourceInsideJar {
      // ...
    @PostConstruct
    public void init() {
      try {
          Resource resource = resourceLoader.getResource("classpath:emailTemplate.html");
          InputStream resourceAsStream = resource.getInputStream(); // <-- this is the difference (Jar Embedded)
      } catch (IOException | NullPointerException e) {
          LOGGER.error("Resource couldn't be loaded. ", e);
      }
    }
}