vue create vue-koa2-demo

mkdir koa-demo
cd koa-demo
npm koa koa-router koa-cors

let Koa=require('koa')
let Router=require('koa-router')
let cors=require('koa-cors')
let fs=require('fs')

const app=new Koa()
const router=new Router()

router.get('/getData',async ctx=>{
 // 允许cors跨域请求
 await cors();
 // 返回数据
 ctx.body=JSON.parse(fs.readFileSync('./static/data.json'));
})

// 将koa和中间件连起来
app.use(router.routes()).use(router.allowedMethods());

let port=3000;
app.listen(port,()=>{
 console.log('server is running on'+port)
})

[{
 "id": 1,
 "name": "曹操",
 "age": "18"
}, {
 "id": 2,
 "name": "孙权",
 "age": "20"
}, {
 "id": 3,
 "name": "刘备",
 "age": "24"
}, {
 "id": 4,
 "name": "魏延",
 "age": "28"
}]

node server.js

<template>
 <div class="home">
 <ul>
  <li v-for="item in list" :key="item.id">
  <p>姓名:{{ item.name }}</p>
  <p>年龄:{{ item.age }}</p>
  </li>
 </ul>
 </div>
</template>

<script>
export default {
 name: "Home",
 computed: {
 list() {
  return this.$store.state.list;
 }
 },
 mounted() {
 this.getlist();
 },
 methods: {
 getlist() {
  this.$store.dispatch('getData')
 }
 }
};
</script>

<template>
 <div id="app">
 <router-view />
 </div>
</template>

import Vue from "vue";
import Vuex from "vuex";
import axios from "axios";

Vue.use(Vuex);

export default new Vuex.Store({
 state: {
 list: []
 },
 mutations: {
 setlist(state, data) {
  state.list = data;
 }
 },
 actions: {
 getData({ commit }) {
  axios
  .get("/api/getData", {
   headers: {
   Accept: "application/json",
   "Content-Type": "application/json"
   }
  })
  .then(res => {
   if (res.status === 200) {
   return res.data;
   }
  })
  .then(res => {
   commit("setlist", Array.from(res));
  });
 }
 },
 modules: {}
});

module.exports = {
 devServer: {
 port: 8085, // 端口号
 https: false, // https:{type:Boolean}
 open: true, //配置自动启动浏览器
 proxy: {
  "/api": {
  target: "http://127.0.0.1:3000",
  changeOrigin: true,
  pathRewrite: {
   "^/api": "/"
  }
  }
 }
 }
};

npm run serve