npm install -g vue-cli（安装，安装过的就不用了）
vue init webpack vueapp

import axios from 'axios'
var url="http://localhost:3000"            //express服务器的地址
axios.get(url+'/product')               //放数据的接口
 .then(function (response) {             //收到的数据
  console.log(response);
  console.log(response.data);            //展示数据（看看是否拿到，和数据长啥样） 
  var nodeData=response.data;      
 })
 .catch(function (error) {
  console.log(error);![在这里插入图片描述](https://img-blog.csdnimg.cn/20191013132943460.jpg)
 });

新建个myapp放express
npm install express

var express = require('express');      //使用express
var router = express.Router();        //放数据
/* GET home page. */
router.get('/', function (req, res, next) {
  var data = {
    code: 0,
    data: {
      name: 'aaa',
      pwd: '123'
    },
    isSuccess: true,
    msg: "请求成功"
  }
  res.json(data);
});
module.exports = router;

var productRouter = require('./routes/product');
app.use('/product', productRouter);

//跨域问题解决方面
const cors = require('cors'); 
app.use(cors({ 
  origin:['http://localhost:8080'],
  methods:['GET','POST'],
}));
//跨域问题解决方面
app.all('*',function (req, res, next) {
 res.header('Access-Control-Allow-Origin', 'http://localhost:8080');
 res.header('Access-Control-Allow-Headers', 'Content-Type');
 res.header('Access-Control-Allow-Methods', 'PUT, POST, GET, DELETE, OPTIONS');
　next();　
});