config/dev.env.js

'use strict'
const merge = require('webpack-merge')
const prodEnv = require('./prod.env')

module.exports = merge(prodEnv, {
  NODE_ENV: '"development"', 
  API_ROOT: '"http://192.168.1.14:8080/api/"'
})

config/prod.env.js

'use strict'
module.exports = {
  NODE_ENV: '"production"', 
  API_ROOT: '"http://www.*******.com/dididcarapi/"',
  // 将上文设置的环境变量，赋值到 type 属性上
  type: process.env.type
}

config/index.js

dev: {
// 反向代理解决跨域
proxyTable: {
      '/api': { //将http://192.168.1.51:8080/grain印射为/api
        target: 'http://192.168.1.67:8080/dididcarapi',//接口域名
        // target: 'http://www.91dadi.com/dididcarapi/',//接口域名
        changeOrigin: true,//是否跨域
        pathRewrite: {
          '^/api': ''
        }
      }
    },
}

src/config/index.js

export default {
	install : function(Vue) {
		var root = process.env.API_ROOT;
		Vue.prototype.root = root;
	}
}

src/main.js

import './config'