无法从 apollo-server-express 获取函数 [英] Cannot get functions from apollo-server-express

问题描述

我正在遵循教程并尝试启动节点服务器，但我无法将其导入 Apollo 包中的函数

I am following the tutorial and trying to start node server and i cant import this to functions from Apollo package

const {graphqlExpress, graphiqlExpress} = require('apollo-server-express'); // here i importing fucntions
const bodyParser = require('body-parser'); // import parser
const cors = require('cors'); // import cors
const express = require('express'); // import cors
const { makeExecutableSchema } = require('graphql-tools');

const port = 9000; // define port

const schema = makeExecutableSchema({typeDefs, resolvers}); // init shcema

const app = express();
app.use(cors(), bodyParser.json());
app.use('/graphql', graphqlExpress({schema})); // is not a function
app.use('/graphiql', graphiqlExpress({endpointUrl: '/graphql'})); // is not a function
app.listen(port, () => console.log(`Server is running on the port ${port}`));

当我由于graphqlExpress 不是函数"而启动服务器失败时，以及当它发表评论并且服务器重新启动有关graphiqlExpress 的相同内容时.也许我正在关注的教程已经过时并且 apollo-server-express 不再提供此类功能?

When i starting the server if fails due to "graphqlExpress is not a function", and when it commented and the server restarted the same thing about graphiqlExpress. Maybe the tutorial i am following is outdated and apollo-server-express doesnt provide such functions anymore?

推荐答案

Apollo Server 2.0 引入了许多旨在简化设置的重大更改.文档中有一个迁移指南，概述了这些变化.如果您只需要一个 GraphQL 服务器，那么入门可以像这样简单:

Apollo Server 2.0 introduced a number of breaking changes with the intention of simplifying setup. There's a migration guide in the documentation that outlines the changes. If all you need is a GraphQL server, getting started can be as simple as this:

const { ApolloServer, gql } = require('apollo-server');

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

请注意，上面只是使用了 apollo-server 包.apollo-server-express 如果您想继续使用 Apollo 作为 express 中间件而不是将 Apollo 作为独立"服务器运行，那么它仍然存在.

Note that the above simply uses the apollo-server package. apollo-server-express still exists if you want to continue to utilize Apollo as express middleware instead of running Apollo as a "standalone" server.

const { ApolloServer, gql } = require('apollo-server-express');
const app = require('express')();

const server = new ApolloServer({ typeDefs, resolvers });
server.applyMiddleware({ app });
app.listen({ port: 3000 })

新的 API 无需单独导入和实现额外的中间件，如 body-parser 或 cors.阅读文档，了解有关如何配置 Apollo 服务器的更多信息实例.

The new API eliminates the need to separately import and implement additional middleware like body-parser or cors. Read the docs for more information about how to configure your Apollo Server instance.

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