The best practice and recommendation how to use Graphql Java Annotations framework

Graphql Java Annotations framework is a powerful tool for achieving Graphql API in Java applications.It uses annotations to define the GraphQL mode, so that developers can easily map the Java method to Graphql to query and mutate. In this article, we will introduce some of the best practice and recommendation methods of Graphql Java Annotations framework to help you better use it to build a flexible and efficient Graphql API. 1. Add dependencies First, add the following dependencies to the construction document of your project to use Graphql Java Annotations framework: <dependency> <groupId>com.graphql-java</groupId> <artifactId>graphql-java</artifactId> <version>16.2</version> </dependency> <dependency> <groupId>com.graphql-java</groupId> <artifactId>graphql-java-annotations</artifactId> <version>2.0.0</version> </dependency> 2. Define Graphql mode Using Graphql Java Annotations framework, you can easily define the Graphql mode with annotations.The following is a basic example: public class Book { @GraphQLField public String title; @GraphQLField public String author; } public class Query { @GraphQLField public List<Book> books() { // Return to some books data } } In the above example, we define a Book class and use @Graphqlfield annotation to expose its field as Graphql mode.Then, we use @Graphqlfield annotations in the Query class to define a Books () method, which will return some books data. 3. Create Graphqlschema Create Graphqlschema objects to represent the entire GraphQL mode.The following is an example: GraphQLSchema schema = new GraphQLAnnotationsSchemaGenerator() .withOperationsFromSingleton(new Query()) .generate(); In the above example, we use GraphqlannotationssCheMagenrator classes to generate Graphql mode from the Query class.You can also add other classes as the source of the operating sources in order to use multiple class definition mode. 4. Create GraphqlhttpServlet Using Graphql Java Annotation's framework, you can easily deploy GraphQL API as a Servlet.The following is an example: Graphqlschema schema = // Create Graphqlschema object GraphQLSchemaProvider schemaProvider = new SimpleGraphQLSchemaProvider(schema); GraphQLConfiguration configuration = GraphQLConfiguration.with(schemaProvider) .with(new GraphQLEndpoint("/graphql")) .build(); GraphQLHTTPServlet servlet = new GraphQLHTTPServlet(configuration); In the above example, we created a GraphqlConfiguration object that contains GraphqlscheMaprovider and Graphqlendpoint configuration.We then use the GraphqlhttpServlet class to create a Servlet that can be deployed. This is a brief introduction to the best practice and recommendation method of Graphql Java Annotations framework.You can make more configuration and customization according to your specific needs and project structure.I hope this article can help you better use Graphql Java Annotations framework to build a strong Graphql API.