开发Vue spa 商城进行真机测试的时候，原本在/config下的index.js/host

'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.

const path = require('path')

module.exports = {
  dev: {
    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',

    // Various Dev Server settings
    // host: 'localhost'
    host: '192.168.xx.xx', // can be overwritten by process.env.HOST
    port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
    autoOpenBrowser: false,
    errorOverlay: true,
    notifyOnErrors: true,
    poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-

    proxyTable: {
      '/api': {
        target: 'xxxxxxxxxx',
        secure: false,
        changeOrigin: true,
        pathRewrite: {'^/api': ''}
      }
    },


    /**
     * Source Maps
     */
    devtool: 'cheap-module-eval-source-map',
    cacheBusting: true,

    cssSourceMap: true
  }
}

今天突然不行了，解决办法：

"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js --host 192.168.x.xxx",
// 修改的是本地的ip 

再进行重新运行一下 npm install


npm run dev 运行一下就可以了

//浏览器里面输入
http://192.168.xx.xx:8080/index

自行备注，也希望可以帮到你。