j2ee环境
jdk1.8
https://jingyan.baidu.com/article/6dad5075d1dc40a123e36ea3.html
maven3.6.1
https://blog.csdn.net/cs4380/article/details/79158268
idea
https://blog.csdn.net/ysj4428/article/details/81561759
数据库
mysql
https://www.runoob.com/mysql/mysql-install.html
出现由于找不到MSVCR120.dll,无法继续执行代码.重新安装程序可能会解决此问题。
https://blog.csdn.net/zhongaiyisheng_/article/details/85924378
修改密码注意mysql5.7之后语句有变化。