@Override
  public Resource getResource(String location) {
    if (location.startsWith(CLASSPATH_URL_PREFIX)) {
      return new ClassPathResource(location.substring(CLASSPATH_URL_PREFIX.length()),
          this.classLoader);
    } else if (location.startsWith(FILE_URL_PREFIX)) {
      // TODO(zheng): to support URL such as "file:xxxx"
      return new FileSystemResource(location.substring(FILE_URL_PREFIX.length()));
    } else {
      return new FileSystemResource(location);
    }
  }
The default resource loader to load resource from the specified location.
src/main/java/com/eudemon/ratelimiter/env/io/DefaultResourceLoader.java