Spring Boot with GraphQL Query Example Book Store /rest/graphql is the REST resource which can fetch Books information DataFetchers are Interfaces for RuntimeWiring of GraphQL with JpaRepository Sample GraphQL Scalar Queries Accessible under http://localhost:8091/rest/graphql Usage for allBooks { allBooks { isn title authors publisher } } Usage for book { book(id: "123") { title authors publisher } Combination of both allBooks and book { allBooks { title authors } book(id: "124") { title authors publisher } }