1：创建文件夹D:\data\service\mysql-8.0.11-winx64\data
2：进到D:\data\service\mysql-8.0.11-winx64\bin
第三步：初始化
./mysqld --initialize
./mysqld --initialize
第四步：在data下面.err结尾的文件里面找到密码
第五步：测试这个密码是否可以登录
./mysql -h 127.0.0.1 -uroot -p
./mysql -h localhost -uroot -p
./mysql -h 127.0.0.1 -uroot -p
./mysql -h localhost -uroot -p
修改密码
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';