一谒养、使用GraphQLObjectType 定義type（類型）
image.png
二睦优、使用GraphQLObjectType 定義Query（查詢）
image.png
三、創(chuàng)建schema
var schema = new graphql.GraphQLSchema({query: queryType});
const express = require('express');
const graphql = require('graphql');
const {graphqlHTTP} = require('express-graphql');
// 定義Schema, 查詢方法和返回值類型
//const schema = buildSchema(`
// type Account {
// name: String
// age: Int
// sex: String
// department: String
// salary(city: String): Int
// }
// type Query {
// getClassMates(classNo: Int!): [String]
// account(username: String): Account
// }
//`)
const AccountType = new graphql.GraphQLObjectType({
name: 'Account',
fields: {
name: {type: graphql.GraphQLString},
age: {type: graphql.GraphQLInt},
sex: {type: graphql.GraphQLString},
department: {type: graphql.GraphQLString}
}
});
const queryType = new graphql.GraphQLObjectType({
name: 'Query',
fields: {
account: {
type: AccountType,
args: {
username: {type: graphql.GraphQLString}
},
resolve: function(_, {username}) {
const name = username;
const age = 19;
const sex = '男';
const department = '開發(fā)部';
return {
name,
age,
sex,
department
}
}
}
}
});
const schema = new graphql.GraphQLSchema({query: queryType});
const app = express();
app.use('/graphql', graphqlHTTP({
schema: schema,
graphiql: true
}))
app.listen(3000);
