wro4j-core/src/main/java/ro/isdc/wro/model/resource/locator/StandaloneServletContextUriLocator.java
@Override
  public InputStream locate(final String uri)
      throws IOException {
    validState(standaloneContext != null, "Locator was not initialized properly. StandaloneContext missing.");

    Exception lastException = null;
    final String[] contextFolders = standaloneContext.getContextFolders();
    for(final String contextFolder : contextFolders) {
      try {
        return locateStreamWithContextFolder(uri, contextFolder);
      } catch(final IOException e) {
        lastException = e;
        LOG.debug("Could not locate: {} using contextFolder: {}", uri, contextFolder);
      }
    }
    final String exceptionMessage = String.format("No valid resource '%s' found inside any of contextFolders: %s", uri,
        Arrays.toString(standaloneContext.getContextFolders()));
    throw new IOException(exceptionMessage, lastException);
  }
@Override
  public InputStream locate(final String uri)
      throws IOException {
    validState(standaloneContext != null, "Locator was not initialized properly. StandaloneContext missing.");

    Exception lastException = null;
    final String[] contextFolders = standaloneContext.getContextFolders();
    for(final String contextFolder : contextFolders) {
      try {
        return locateStreamWithContextFolder(uri, contextFolder);
      } catch(final IOException e) {
        lastException = e;
        LOG.debug("Could not locate: {} using contextFolder: {}", uri, contextFolder);
      }
    }
    final String exceptionMessage = String.format("No valid resource '%s' found inside any of contextFolders: %s", uri,
        Arrays.toString(standaloneContext.getContextFolders()));
    throw new IOException(exceptionMessage, lastException);
  }
This implementation will try to locate the provided resource inside contextFolder configured by standaloneContext.
If a resource cannot be located, the next contextFolder from the list will be tried. The first successful result
will be returned.