通过postman实现数据列表的增删改查

const Koa = require('koa')

const router = require('koa-router')()

const views = require('koa-views')

const nunjucks = require('nunjucks')

const session = require('koa-session')

const parser = require('koa-parser')

const app = new Koa()

app.keys = ['123456']

app.use(parser())

app.use(

  session(

    {

      maxAge: 10 * 1000

    },

    app

  )

)

app.use(

  views(__dirname + '/views', {

    map: { html: 'nunjucks' }

  })

)

let dataList = ['水果', '苹果', '菠萝']

router.get('/fruits', ctx => {

  ctx.body = dataList

})

router.post('/fruits', ctx => {

  let fruit = ctx.request.body.fruit

  console.log(fruit)

  dataList.push(fruit)

  ctx.body = dataList

})

router.put('/fruits/:id', ctx => {

  let id = ctx.params.id

  console.log(id)

  let fruit = ctx.request.body.fruit

  console.log(fruit)

  dataList.splice(id, 1, fruit)

  ctx.body = dataList

})

router.delete('/fruits/:id', ctx => {

  let id = ctx.params.id

  dataList.splice(id, 1)

  ctx.body = dataList

})

app.use(router.routes())

app.listen(3001, () => {

  console.log('server is running')

})