Remove / in Spark Java (Allow with / and without /)

SparkRedirect.java

Spark.before((req, res) -> {
  String path = req.pathInfo();
  if (path.endsWith("/") && path.length() != 1) // length prevents redirect on homepage http://example.com/ <-- 
    res.redirect(path.substring(0, path.length() - 1));

});