apollo-server-koa 简单使用
发布时间：2020-12-15 06:46:35 所属栏目：百科 来源：网络整理
导读：server.js import koa from 'koa'; // koa@2 npm install --save koa@2import koaRouter from 'koa-router'; // koa-router@nextimport koaBody from 'koa-bodyparser'; // koa-bodyparser@nextimport { graphqlKoa,graphiqlKoa } from 'apollo-server-koa';
server.jsimport koa from 'koa'; // koa@2 npm install --save koa@2
import koaRouter from 'koa-router'; // koa-router@next
import koaBody from 'koa-bodyparser'; // koa-bodyparser@next
import { graphqlKoa,graphiqlKoa } from 'apollo-server-koa';
import schema from './src/graphql/schema.js';
import executableSchema from './src/graphql/executableSchema';
const app = new koa();
const router = new koaRouter();
const PORT = 3000;
// koaBody is needed just for POST.
router.post('/graphql',koaBody(),graphqlKoa({ schema: executableSchema }));
router.get('/graphql',graphqlKoa({ schema: executableSchema }));
router.get('/graphiql',graphiqlKoa({ endpointURL: '/graphql' }));
app.use(router.routes());
app.use(router.allowedMethods());
app.listen(PORT,()=>console.log(`localhost:${PORT}`));
package.json{
"name": "mcbeath","version": "1.0.0","description": "my mcbeath network","main": "index.js","scripts": {
"test": "echo "Error: no test specified" && exit 1","start": "babel-node server.js"
},"author": "","license": "MIT","dependencies": {
"apollo-server-koa": "^1.1.2","babel-cli": "^6.26.0","babel-preset-env": "^1.6.0","graphql": "^0.11.5","koa": "^2.3.0","koa-bodyparser": "^3.2.0","koa-router": "^7.1.1"
}
}
必备文件说明
apollo-server-koa:apollo graphql服务
babel-cli：是一个工具，可以帮助你在JavaScript的最新版本编写代码。当你的环境支持不支持某些功能本身，Babel会帮助你编译的功能到一个支持的版本。
babel-preset-env：babel的环境变量，可以支持你的浏览器
graphql：
The GraphQL specification is edited in the markdown files found in
/spec
the latest release of which is published at
http://facebook.github.io/graphql/
.
koa：中间件使用异步函数表达es2017
Expressive HTTP middleware framework for node.js to make web applications and APIs more enjoyable to write. Koa's middleware stack flows in a stack-like manner,allowing you to perform actions downstream then filter and manipulate the response upstream.
koa-bodyparser：A body parser for koa,base on co-body. support json,form and text type body.
koa-router：Router middleware forkoa
.babelrc配置 （必不可少否则最新语法无法编译）{
"presets": [
["env",{
"targets": {
"node": true
}
}]
]
}
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