SpringBoot Port number out of range: null:-1

Env

-spring-boot: 2.6.0 -java: 17

Examaple

• application.yml

spring:
  elasticsearch:
    uris: http://elasticsearch_host:9200

org.springframework.boot.autoconfigure.data.elasticsearch.ReactiveElasticsearchRestClientAutoConfiguration.ConsolidatedProperties#getEndpoint(URI) returns null:-1

Comment From: wilkinsona

This looks like a configuration error to me as _ is an invalid character in a hostname. You can see this with the following code:

URI uri = URI.create("http://elasticsearch_host:9200");
System.out.println(uri.getHost());
System.out.println(uri.getPort());

It produces the following output:

null
-1