This project integrates GraphQL Java into Spring/Spring Boot, by enabling query execution via HTTP.

While the GraphQL Specification itself doesn't specify any transport protocol there is a quasi standard how to do it described here and this project follows this quasi standard.

Goals / Design:

• Just HTTP JSON: the current focus is on HTTP execution via JSON.
• Minimal Dependencies: the only dependencies are GraphQL Java and Spring projects (including Jackson for JSON handling).
• No additional abstraction layer on top of GraphQL Java: GraphQL Java is meant to be used directly.

As outlined in https://graphql.org/learn/serving-over-http this project supports:

1. GET request with query, operationName and variables parameters. The variable parameters are json encoded
2. POST request with body application/json and keys query (string), operationName (string) and variables (map).

Both produce application/json.

The Spring Boot Starter artifact provides a HTTP endpoint on ${graphql.url} with the default value "/graphql" just by being on the classpath.

The only requirement is to have a Bean of type graphql.GraphQL available.

Add the following dependency to your build.gradle (make sure mavenCentral() is among your repos)

dependencies {
    implementation "com.graphql-java:graphql-java-spring-boot-starter:1.0"
}

or to your pom.xml

<dependency>
    <groupId>com.graphql-java</groupId>
    <artifactId>graphql-java-spring-boot-starter</artifactId>
    <version>1.0</version>
</dependency>

We also provide a artifact for non Boot Application.