[mysqld]
# set basedir to your installation path
basedir=D:\\software\\mysql-5.7.18-winx64
# set datadir to the location of your data directory
datadir=D:\\software\\mysql-5.7.18-winx64\\data
port = 3306
max_allowed_packet = 32M 

mysqld --initialize

2017-05-17T10:31:54.235041Z 1 [Note] A temporary password is generated for root@localhost: <r8j*Qrh)jdp

mysqld -install MySQL 

net start MySQL 

mysql -u root -p <r8j*Qrh)jdp

ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; 

Microsoft Windows [版本 6.3.9600]
(c) 2013 Microsoft Corporation。保留所有权利。

D:\software\mysql-5.7.18-winx64\bin>mysqld --initialize

D:\software\mysql-5.7.18-winx64\bin>
D:\software\mysql-5.7.18-winx64\bin>mysqld -install MySQL

D:\software\mysql-5.7.18-winx64\bin>net start MySQL
MySQL 服务正在启动 ....
MySQL 服务已经启动成功。


D:\software\mysql-5.7.18-winx64\bin>mysql -uroot -p
Enter password: ************
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.18

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye