1.查询ip地址
win+R打开cmd 窗口 输入ipconfig
找到IPV4地址 192.168.x.xxx
2.在vue项目config文件夹中的index.js,将localhost换为ipv4地址
host: '192.168.x.xxx', // 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
3.重新编译项目，命令行运行npm run dev命令开启服务
4.电脑或手机端浏览器地址栏输入ipv+端口号如:192.168.x.xxx:8080回车即可(要求电脑和手机在同wifi内)