一、下载downloadjs

npm install downloadjs

二、引入 

import download from 'downloadjs'

grant all privileges on *.* to root@'%' identified by '[密码]' with grant option;

TRUNCATE [表名]

一、备份数据库

mysqldump -u[用户名] -p[密码] [要备份的数据库名] > [目录]/[备份的文件].sql

二、还原数据库

mysql -u[用户名] -p[密码] [要还原备份的数据库名] < [目录]/[备份的文件].sql