1、官网下载对应版本，下载地址为https://dev.mysql.com/downloads/mysql/5.7.html#downloads，我下载的文件为“mysql-5.7.22-winx64.zip”；
2、考虑到数据库容量会增加，建议解压缩到可用容量较大的盘符，我解压缩到D盘；
3、进入解压缩目录，新建my.ini文件，内容如下：
[mysqld]
# set basedir to your installation path
basedir=D:/mysql-5.7.22-winx64
# set datadir to the location of your data directory
datadir=D:/mysql-5.7.22-winx64/data4、使用cmd进入解压缩目录下的bin/目录下
# 安装mysql服务，安装完成后，可在右键“计算机”-“管理”-“服务”中看到，默认服务名为“MySQL”，也可以在install后面指定服务名称
D:\mysql-5.7.22-winx64\bin>mysqld install
Service successfully installed.
# 初始化data目录
D:\mysql-5.7.22-winx64\bin>mysqld.exe --initialize初始化后会在datadir路径下生成一个*.err的文件，打开如下：
2018-05-27T04:49:08.182952Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2018-05-27T04:49:11.016957Z 0 [Warning] InnoDB: New log files created, LSN=45790
2018-05-27T04:49:11.546958Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2018-05-27T04:49:11.676958Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 4c70979b-6169-11e8-9db4-00ff13a6d817.
2018-05-27T04:49:11.676958Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2018-05-27T04:49:11.696958Z 1 [Note] A temporary password is generated for root@localhost: q&10*I#<fi-w最后一行“A temporary password is generated for root@localhost: q&10*I#<fi-w”冒号后面的就是临时密码；
# 启动MySQL服务
D:\mysql-5.7.22-winx64\bin>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。5、修改密码
后面有两种方式可以修改密码，一种是使用刚才生成的临时密码登录修改，另一种是修改配置文件跳过密码登录然后修改密码；
5.1 通过临时密码登录
# 使用临时密码登录
E:\mysql-5.7.22-winx64\bin>mysql -u root -p
Enter password: ************
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.22
Copyright (c) 2000, 2018, 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.
# 查看端口号
mysql> show global variables like 'port';
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
# 通过ALTER语句修改密码
mysql> ALTER user 'root'@'localhost' identified by 'Jiubugaosuni_01';
Query OK, 0 rows affected (0.00 sec)
mysql> SHOW GLOBAL VARIABLES LIKE 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set, 1 warning (0.01 sec)5.2 跳过密码登录
5.2.1 跳过密码登录MySQL
# 停止MySQL服务
D:\mysql-5.7.22-winx64\bin>net stop mysql
MySQL 服务正在停止.
MySQL 服务已成功停止。
# 卸载MySQL服务
D:\mysql-5.7.22-winx64\bin>mysqld remove
Service successfully removed.# 编辑my.ini配置文件，在[mysqld]下添加skip-grant-tables
[mysqld]
# set basedir to your installation path
basedir=D:/mysql-5.7.22-winx64
# set datadir to the location of your data directory
datadir=D:/mysql-5.7.22-winx64/data
skip-grant-tables# 安装MySQL服务
D:\mysql-5.7.22-winx64\bin>mysqld install
Service successfully installed.
# 启动MySQL服务
D:\mysql-5.7.22-winx64\bin>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。5.2.2 无密码登录
D:\mysql-5.7.22-winx64\bin>mysql -u root -p
Enter password:（回车，无需输入密码）
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.22 MySQL Community Server (GPL)
Copyright (c) 2000, 2018, 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># 在这里不能使用ALTER语句，否则报错
mysql> ALTER user 'root'@'localhost' identified by 'Jiubugaosuni_01';
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this
statement# 而应该使用如下命令，设置临时密码
mysql> use mysql;
Database changed
mysql> UPDATE user SET authentication_string = password("Jiubugaosuni_01") WHERE user = "root";
Query OK, 1 row affected, 1 warning (0.07 sec)
Rows matched: 1 Changed: 1 Warnings: 1
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> QUIT;
Bye5.2.3 恢复密码登录
# 停止MySQL服务
D:\mysql-5.7.22-winx64\bin>net stop mysql
MySQL 服务正在停止.
MySQL 服务已成功停止。
# 卸载MySQL服务
D:\mysql-5.7.22-winx64\bin>mysqld remove
Service successfully removed.
# 修改my.ini配置文件，注释或者删除skip-grant-tables
[mysqld]
# set basedir to your installation path
basedir=D:/mysql-5.7.22-winx64
# set datadir to the location of your data directory
datadir=D:/mysql-5.7.22-winx64/data
# skip-grant-tables# 安装MySQL服务
D:\mysql-5.7.22-winx64\bin>mysqld install
Service successfully installed.
# 启动MySQL服务
D:\mysql-5.7.22-winx64\bin>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。5.2.4 登录并查看端口号
# 使用修改的临时密码登录
D:\mysql-5.7.22-winx64\bin>mysql -u root -p
Enter password: ***************
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.22
Copyright (c) 2000, 2018, 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.
# 必须通过ALTER语句修改密码才算正式修改密码成功
mysql> show global variables like 'port';
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> ALTER user 'root'@'localhost' identified by 'Jiubugaosuni_01';
Query OK, 0 rows affected (0.00 sec)
mysql> SHOW GLOBAL VARIABLES LIKE 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set, 1 warning (0.04 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
mysql>6、配置远程登录
# 赋予全部权限在所有数据库和所有表上给root用户在任何主机上使用Jiubugaosuni_01这个密码登录
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'Jiubugaosuni_01' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.02 sec)