GraphQL入门之使用ApolloServer构建GraphQL服务

mkdir myapp
cd myapp
npm init (一路回车)

npm install @apollo/server graphql

const typeDefs = `
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};

const server = new ApolloServer({
  typeDefs,
  resolvers,
});

startStandaloneServer(server).then(function(data) {
  console.log(`🚀 Server ready at ${data.url}`);
});

const { ApolloServer } =  require('@apollo/server');
const { startStandaloneServer } = require('@apollo/server/standalone');

// The GraphQL schema
const typeDefs = `
  type Query {
    hello: String
  }
`;

// A map of functions which return data for the schema.
const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};

const server = new ApolloServer({
  typeDefs,
  resolvers,
});

startStandaloneServer(server).then(function(data) {
  console.log(`🚀 Server ready at ${data.url}`);
});

node server.js

query {
  hello
}

{
  "data": {
    "hello": "Hello world!"
  }
}