Okta SAML 2.0: Can I use HTTP? I do not want to use HTTPS

Okta has very little information. I always don’t know how to do it.
Single Sign On - > URLhttps: / / localhost: 8088 / saml/SSO
On Restriction - > https://localhost:8088/saml/metadata
I is according to this article integrated – > https://developer.okta.com/blog/2017/03/16/spring-boot-saml
How can I change my code to use HTTP? How does Okta use Single logout?

SAML can be configured to work with either HTTP or HTTPS. For the Spring Boot sample, I would try changing every “localhost” URL from the https:// scheme to the http:// scheme.