npm run dev 有效
写的组件能插入
但是build后 本地测试却只有一个单index文件

文件目录：

/--build
 --config
 --dist
   |-static
   |-index.html
 --server
   |-app.js  后端   
 --src  vue目录
 --index.html   

后端代码：

const express = require('express');
const fs = require('fs');
const path = require('path');
const bodyParser = require('body-parser');

const router = require('./router.js');

let resolve = file => path.resolve(__dirname, file);


const app = express();

app.use(bodyParser.json());
app.use('/dist', express.static(resolve('../dist')))
app.use(router);

app.get('*', function(req, res) {
    let html = fs.readFileSync(resolve('../dist/index.html'), 'utf-8');
    res.send(html);
})

app.listen(3000, function() {
    console.log('server is running on: 3000');
});