注意：我对转载文章进行了修改！！！
原文地址：http://www.cnblogs.com/lol-ashe/p/6371072.html
MySQL5.7.17绿色版安装
1、下载mysql5.7.1的zip包https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.17-win32.zip；
2、【我没有设置！】设置环境变量：新建变量MySQL_HOME，变量值C:\mysql-5.7.17-winx64;path增加变量，&MySQL_HOME&\bin;
3、把my-default.ini复制出一份命名为my.ini
修改 [mysqld]块
[mysqld]
basedir = D:\MySQL\mysql-5.7.17-win32
datadir = D:\MySQL\mysql-5.7.17-win32\mydata（我自己建的）
port = 3306
新增新配置
[client]
default-character-set=utf8
[mysqld]
character-set-server=utf8
4、【用管理员权限！】cmd进入mysql\bin目录下，执行mysqld --initialize-insecure --user=mysql初始化data目录，
然后执行mysqld -install安装成服务，如果之前有安装过，则先卸载(mysqld -remove)后再执行安装;
5、启动服务：net start mysql；或者通过右键计算机-管理-服务，找到MYSQL开启，设置成自动；
6、mysql -uroot -p 无密码进入
7、改密码：SET PASSWORD = '(密码)';
=======================================================================第4～7步，执行如下：
d:\MySQL\mysql-5.7.17-win32\bin>mysqld --initialize-insecure --user=mysql
d:\MySQL\mysql-5.7.17-win32\bin>mysqld -install
Service successfully installed.
d:\MySQL\mysql-5.7.17-win32\bin>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。
d:\MySQL\mysql-5.7.17-win32\bin>mysql -uroot -p
Enter password: 【直接回车】
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.17 MySQL Community Server (GPL)
Copyright (c) 2000, 2016, 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> set password='lanman';
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
d:\MySQL\mysql-5.7.17-win32\bin>mysql -uroot -p
Enter password:【此处回车，显示下行错误】
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
至此完成配置，后续正常使用数据库