http://localhost:4000/当我输入 { user(id: 1) { firstName } }
时
我得到输出 { "errors": [ { "message": "The type of Query.user must be Output Type but got: undefined.\n\nThe type of Query.user(id:) must be Input Type but got: undefined." } ] }
我第一次做这个Graphql而且我不确定我做错了什么,我看到很多例子,但如果我这样做,我还有很多其他错误 . 我试图从类型中更改InputType,但仍然会发出问题 . server.js
var express = require('express'),
app = express(),
port = process.env.PORT || 4000;
var graphQLHTTP = require('express-graphql');
var schema = require('./schema');
app.use(graphQLHTTP({
schema,
graphiql:true,}))
app.listen(port);
schema.js如下
const {
GrpahQLString,
GrpahQLInt,
GraphQLSchema,
GraphQLInputObjectType,
GraphQLObjectType,
GraphQLOutputType
} = require('graphql');
const fetch = require('node-fetch');
const BASE_URL = 'http://localhost:3000';
const UserType = new GraphQLInputObjectType({
name : 'user',
description : "...",
fields: () => ({
id: {
inputType : GrpahQLInt,
// resolve: (user) => user.id,
},
firstName: {
inputType : GrpahQLString,
// resolve: (user) => user.firstname,
},
lastName: {
inputType : GrpahQLString,
// resolve: (user) => user.lastname,
},
email: {
inputType : GrpahQLString,
// resolve: (user) => user.email,
}
})
});
module.exports = new GraphQLSchema({
query: new GraphQLObjectType({
name : 'Query',
fields: () => ({
user : {
inputType: UserType,
args: {
id: {type: GrpahQLInt}
},
resolve : (root ,args) =>
fetch(`${BASE_URL}/users/${args.id}/`).then(res=>res.json()).then(json=> json.user)
}
})
})
});
1 回答