koa 快速模拟后台接口

在前后端同步开发的过程中，前期后台接口出的没那么快，前端一般可以自己通过koa模拟后台接口—前提时与后台约定好数据格式。下面是如何用koa2模拟假数据接口的实现：

首先安装个koa脚手架

npm install koa-generator -g

koa生成一个server目录并安装依赖

koa2 server && cd server&& npm i

新建个假数据目录

mkdir mock

目录

1649670028(1).png

DetailData的假数据长这样

module.exports = {
    "msg": "成功",
    "code": 200,
    "data": {
        "records": [{
            "id": 149,
            "alertName": "poseidon_httpClient_codeCountStat_count_total",
            "buCode": "test",
            "buName": "中间件",
            "projectCode": "test-public",
            "projectName": "中间件公共项目",
            "resourceType": "java",
            "resourceCode": "service_code_4431",
            "resourceName": "mssp-web",
            "alertStatus": 0,
            "alertStatusName": "处理中",
            "updateTime": "2022-03-23 14:57:57"
        }],
        "total": 66,
        "size": 10,
        "current": 1,
        "orders": [

        ],
        "optimizeCountSql": true,
        "hitCount": false,
        "countId": null,
        "maxLimit": null,
        "searchCount": true,
        "pages": 7
    },
    "success": true,
    "exception": null,
    "attachment": null,
    "errCode": 200
}

alarm.js里的长这样

const router = require('koa-router')()
let DetailData = require('../mock/historyDingTalkDetail')
router.get('/alert/history/dingTalk/detail', async (ctx, next) => {
    ctx.append("Access-Control-Allow-Origin","*")
    ctx.body = DetailData
})
module.exports = router

然后app.js里面的其它的不需要动，只是配置下路由就行

// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
app.use(alarm.routes(), alarm.allowedMethods())

好了，接下来

npm run dev
// 或者
npm run start
// 都行，一个时修改热加载，一个要重启，看需求

打开浏览器 输入http://localhost:3000/alert/history/dingTalk/detail