1. 访问搜狐镜像 http://mirrors.sohu.com/mysql/MySQL-5.7/ 下载 mysql-5.7.23-winx64.msi
2. 安装 mysql-5.7.23-winx64.msi ，选择custom方式安装，就可以选择安装路径，否则默认安装在C盘，然后一路 next 。
3. 进入 mysql 安装目录：
此时你可能会发现两个问题：一是没有my.ini文件，二是没有data文件夹；
3.1 若没有my.ini文件，则自己创建个my.ini文件，将以下内容Copy进去
1 # For advice on how to change settings please see 2 # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html 3 # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the 4 # *** default location during install, and will be replaced if you 5 # *** upgrade to a newer version of MySQL. 6 [client] 7 default-character-set = utf8 8 [mysql] 9 default-character-set = utf8 10 [mysqld] 11 character-set-client-handshake = FALSE 12 character-set-server = utf8 13 collation-server = utf8_bin 14 init_connect='SET NAMES utf8' 15 # Remove leading # and set to the amount of RAM for the most important data 16 # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. 17 innodb_buffer_pool_size = 128M 18 # Remove leading # to turn on a very important data integrity option: logging 19 # changes to the binary log between backups. 20 # log_bin 21 # These are commonly set, remove the # and set as required. 22 basedir = D:\mysql 23 datadir = D:\mysql\data 24 port = 3306 25 # server_id = ..... 26 # Remove leading # to set options mainly useful for reporting servers. 27 # The server defaults are faster for transactions and fast SELECTs. 28 # Adjust sizes as needed, experiment to find the optimal values. 29 join_buffer_size = 128M 30 sort_buffer_size = 16M 31 read_rnd_buffer_size = 16M 32 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES