使用Koa搭建一个mock服务器

直接上代码

//service.js

const Koa = require('koa')
const KoaRouter = require('koa-router')
const KoaBody = require('koa-body')
KoaBody({ multipart: true })
const app = new Koa()
const router = new KoaRouter()

require('./test')(router)
require('./chart')(router)

app
  .use(KoaBody())
  .use(router.routes())
  .use(router.allowedMethods())

app.listen(8081, () => {
  console.log(`服务器启动成功，mock数据端口号：8081`)
})

//package.json

{
  "name": "Koa",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "mock": "nodemon ./server.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "koa": "^2.11.0",
    "koa-body": "^4.1.1",
    "koa-router": "^7.4.0",
    "nodemon": "^2.0.2"
  }
}

//test.js

module.exports = function(router) {
    router.post('/test', ctx => {
        let result = []
        for (let i = 0; i < 10; ++i) {
            let n = Math.ceil(Math.random() * 6)
            result.push({
                value: n,
                name: i
            })
        }
        ctx.body = {
            code: '200',
            msg: '操作成功',
            data: {
                pageNum: 1,
                total: 133,
                pageSize: 10,
                list: result
            }
        }
    })
}

//chart.js

var fs = require('fs');
var path = require('path');

module.exports = function(router) {
  // 图形
  router.get('/chart', async ctx => {
    // 模版
    let file = await fs.readFileSync(path.resolve(__dirname, 'chartConfig.json'))
    let data = JSON.parse(file)

    let result = {
      id: 0,
      name: 'hello world'
    }
    result.chartConfig = data

    ctx.body = {
      code: '200',
      msg: '操作成功',
      data: {
        taskDetailInfo: result
      }
    }
  })
}

//chartConfig.js

{
    "scaleLimit": {
        "min": 1,
        "max": 20
    },
    "roam": true,
    "room": 1,
    "center": [
        115.97,
        29.71
    ],
    "series": [
        {
            "name": "中国地图",
            "type": "map",
            "mapType": "china",
            "selectedMode": "single",
            "label": {
                "show": false,
                "color": "#fff",
                "fontSize": 12
            },
            "itemStyle": {
                "areaColor": "#ed45ed",
                "borderColor": "#FFFFFF"
            },
            "emphasis": {
                "itemStyle": {
                    "areaColor": "#f40"
                }
            },
            "left": 0,
            "right": 0,
            "top": 0,
            "bottom": 0,
            "data": []
        }
    ]
}

调用:

axios.get('/chart').then(res => {
    console.log('响应::::', res)
});
axios.post('/test').then(res => {
    console.log('响应::::', res)
});

参考: https://www.npmjs.com/package/koa-body