Koa路由进阶配置(合并路由、静态资源服务)

合并路由:koa-combine-routers

//安装
npm install koa-combine-routers

//用法
app.js

const Koa = require('koa')
const router = require('./routes')
 
const app = new Koa()
 
app.use(router())

routes.js

const Router = require('koa-router')
const combineRouters = require('koa-combine-routers')
 
const dogRouter = new Router()
const catRouter = new Router()
 
dogRouter.get('/dogs', async ctx => {
  ctx.body = 'ok'
})
 
catRouter.get('/cats', async ctx => {
  ctx.body = 'ok'
})
 
const router = combineRouters(
  dogRouter,
  catRouter
)
 
module.exports = router

静态资源: koa-static

//安装
npm install koa-static

//用法
onst serve = require('koa-static');
const Koa = require('koa');
const app = new Koa();
 
// $ GET /package.json
app.use(serve('.'));
 
// $ GET /hello.txt
app.use(serve('test/fixtures'));
 
// or use absolute paths
app.use(serve(__dirname + '/test/fixtures'));
 
app.listen(3000);
 
console.log('listening on port 3000');

安全头盔: koa-helmet

//安装
npm i koa-helmet

# or:

yarn add koa-helmet

//用法
import Koa from 'koa';
import helmet from 'koa-helmet';

const app = new Koa();

app.use(helmet());

app.use((ctx) => {
  ctx.body = "Hello World"
});

app.listen(4000);