koa-router的基本用法
const Koa = require('koa');const KoaRouter = require('koa-router');const app = new Koa();const router = new KoaRouter();router.get('/', (ctx, next) => {ctx.body = {key: 'index'}});router.post('/users', (ctx, next) => {ctx.body = {key: 'post'}});router.put('/users', (ctx, next) => {ctx.body = {key: 'put'}});router.delete('/user', (ctx, next) => {ctx.body = {key: 'delete'}});
