Graphql-spring-boot, combining GRAPHQL's spring Boot starters Class Library overview

The API query requests that the GRAPHQL server can provide are often implemented via HTTP. Spring boot makes it easy to build a Web service, so it naturally introduces the spring boot enabled GRAPHQL server.

Graphql-spring-boot is an auxiliary class library for spring boot applications, Graphql-java and Graphql-java-servlet based on the GRAPHQL Java implementation to spring Boot application in a way that builds a GRAPHQL server.

The full name of the Graphql-spring-boot class library is graphql and GRAPHIQL spring Framework Boot starters. GRAPHIQL is a test server that is similar to the GRAPHQL feature and is not detailed here.

The latest version of the Graphql-spring-boot class library is released in 2018.1.12 in 4.0.0. Its use requirements:
Java 1.8 Spring Boot 2.x.x 1. Composition

The Graphql-spring-boot class library contains two separate sub-projects: Com.graphql-java.graphql-spring-boot-starter Com.graphql-java.graphiql-spring-boot-starter

2. Configuration in the Spring boot MAVEN project

The following dependencies are added to the Pom.xml file:

<dependency>
    <groupId>com.graphql-java</groupId>
    <artifactId> graphql-spring-boot-starter</artifactid>
    <version>4.0.0</version>
</dependency >

3. Define the Graphqlschema object and use the @bean callout as the spring bean

Here's an example that returns the Graphqlschema object directly in a simplified manner as follows:

    @Bean
    Graphqlschema schema () {
        String schema = "type Query {hello:string}";

        Schemaparser schemaparser = new Schemaparser ();
        Typedefinitionregistry typedefinitionregistry = schemaparser.parse (schema);

        Runtimewiring runtimewiring = newruntimewiring ()
                . Type ("Query", builder-and Builder.datafetcher ("Hello", new Staticdatafetcher ("Xiangbin"))
                . Build ();

        Schemagenerator schemagenerator = new Schemagenerator ();
        Return Schemagenerator.makeexecutableschema (Typedefinitionregistry, runtimewiring);

URI settings for 4.GraphQL server

Because Graphql-spring-boot relies on Graphql-java-servlet, the default open Web Access endpoint is /graphql, This is defined in the Graphql-java-servlet.

If you want to use a different endpoint, you can configure the following in the Application.properties file through the Spring boot configuration file:

GRAPHQL.SERVLET.MAPPING=/GRAPHQL
graphql.servlet.enabled=true
graphql.servlet.corsenabled=true

Or, configure the following in the Application.yaml file:

GRAPHQL:
	  servlet:
		   mapping:/graphql
		   enabled:true
		   corsenabled:true

5. Start the Spring boot app

You can run directly in the IDE, or you can execute Java-jar on the command line My_project.jar

6. Browser access

Using an HTTP POST request, the requested URI is http://localhost:8080/graphql/, and the requested body is {"Query": "{Hello}"}.

This gives the result of the response {"data": {"Hello": "Xiangbin"}}.

Reference Links:

Https://github.com/graphql-java/graphql-spring-boot