Does spring boot 2.1.x support yaml 1.2 specification

Question

Does spring boot 2.1.x support yaml 1.2 specification?

If not, is it possible to use yaml 1.2 + snakeyaml-engine for the spring boot application.yml support?

Answer 1

Spring Boot uses snakeyaml 1.23.

From the description this is YAML 1.1

<description>YAML 1.1 parser and emitter for Java</description>

Because YAML is supported by snakeyaml-engine and not in snakeyaml the API is not compatible so you will not be able to use it in Spring Boot