我無法在 typeDefs 中導入 schema.graphql 文件：找不到以下指針的任何 GraphQL 類型定義：

Question

我正在使用 apollo-server-express 使用 GraphQL 創建后端 api

現在，我想在單獨的文件中編寫 GraphQL Schema。 例如“schema.graphql”，所以當我放入與之前在模板字符串中編寫的代碼相同的代碼時。 進入“schema.graphql”我的應用程序因以下錯誤而崩潰：

找不到以下指針的任何 GraphQL 類型定義

這是我的代碼：

server.js

const express = require('express');
const { ApolloServer, gql } = require('apollo-server-express');
const { importSchema } = require('graphql-import');
const fs = require('fs');
const path = '/graphql';


const apolloServer = new ApolloServer({
  typeDefs: importSchema('./greet.graphql'),
  resolvers: require('./graphql/resolver'),
});

const app = express();
apolloServer.applyMiddleware({ app, path });

app.listen(8080, () => {
  console.log('Server Hosted');
}); 

greet.graphql

type Query {
  greeting: String
}

resolver.js

const Query = {
  greeting: () => 'Hello World From NightDevs',
};

module.exports = { Query };

不僅如此，我還嘗試過這個解決方案 - Stackoverflow 解決方案

但這根本不起作用

Answer 1

對我來說很好。 package 版本：

"apollo-server-express": "^2.12.0",
"graphql-import": "^0.7.1",

例子：

server.js ：

const express = require('express');
const { ApolloServer } = require('apollo-server-express');
const { importSchema } = require('graphql-import');
const path = require('path');

const apolloServer = new ApolloServer({
  typeDefs: importSchema(path.resolve(__dirname, './greet.graphql')),
  resolvers: require('./resolver')
});

const app = express();
const graphqlEndpoint = '/graphql';
apolloServer.applyMiddleware({ app, path: graphqlEndpoint });

app.listen(8080, () => {
  console.log('Server Hosted');
});

greet.graphql ：

type Query {
  greeting: String
}

resolver.js ：

const Query = {
  greeting: () => 'Hello World From NightDevs',
};

module.exports = { Query };

通過curl進行測試：

curl 'http://localhost:8080/graphql' -H 'Accept-Encoding: gzip, deflate, br' -H 'Content-Type: application/json' -H 'Accept: application/json' -H 'Connection: keep-alive' -H 'DNT: 1' -H 'Origin: http://localhost:8080' --data-binary '{"query":"query {\n  greeting\n}"}' --compressed

得到結果：

{"data":{"greeting":"Hello World From NightDevs"}}