GraphQL hello world

# pip install graphene
import graphene

class Query(graphene.ObjectType):
  hello = graphene.String(name=graphene.String(default_value="World"))

  def resolve_hello(self, info, name):
    return 'Hello ' + name

schema = graphene.Schema(query=Query)
result = schema.execute('{ hello }')
print(result.data['hello']) # "Hello World"

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

# Spring Bean
@Bean  
GraphQLSchema schema() {  
 String schema = "type Query {hello: String}";  
 SchemaParser schemaParser = new SchemaParser();  
 TypeDefinitionRegistry typeDefinitionRegistry = schemaParser.parse(schema);  
 RuntimeWiring runtimeWiring = newRuntimeWiring()  
 .type("Query", builder -> builder.dataFetcher("hello", new StaticDataFetcher("Xiangbin")))  
 .build();  
 SchemaGenerator schemaGenerator = new SchemaGenerator();  
 return schemaGenerator.makeExecutableSchema(typeDefinitionRegistry, runtimeWiring);  

# URI - application.properties
graphql.servlet.mapping=/graphql  
graphql.servlet.enabled=true  
graphql.servlet.corsEnabled=true

# Start
 java -jar my_project.jar
http://localhost:8080/graphql/
Request body {"query":"{hello}"}
Response {"data":{"hello": "Xiangbin"}}