1.从mysql网站下载mysql-5.7.7-rc-winx64.zip；
2.将mysql-5.7.7-rc-winx64.zip解压到相应的安装目录中（例如：d:\dev_tools目录下）；
3.将d:\dev_tools\mysql-5.7.7文件加下的my-default.ini文件命名为my.ini；
4.修改my.ini文件（不修改也可以）：
# for advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
# *** do not edit this file. it's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of mysql.
[client]
default-character-set=utf8
[mysqld]
# remove leading # and set to the amount of ram for the most important data
# cache in mysql. start at 70% of total ram for dedicated server, else 10%.
# innodb_buffer_pool_size = 128m
# remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# these are commonly set, remove the # and set as required.
basedir = d:\dev_tools\mysql-5.7.7
datadir = d:\dev_tools\mysql-5.7.7\data
tmpdir = d:\dev_tools\mysql-5.7.7\data
socket = d:\dev_tools\mysql-5.7.7\data\mysql.sock
port = 3306
log-error = d:\dev_tools\mysql-5.7.7\data\mysql_error.log
# server_id = .....
max_connections = 100
table_open_cache = 256
query_cache_size = 1m
tmp_table_size = 32m
thread_cache_size = 8
innodb_data_home_dir = d:\dev_tools\mysql-5.7.7\data\
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 128m
innodb_buffer_pool_size = 128m
innodb_log_file_size = 10m
innodb_thread_concurrency = 16
innodb-autoextend-increment = 1000
# remove leading # to set options mainly useful for reporting servers.
# the server defaults are faster for transactions and fast selects.
# adjust sizes as needed, experiment to find the optimal values.
join_buffer_size = 128m
sort_buffer_size = 32m
read_rnd_buffer_size = 32m
max_allowed_packet = 32m
explicit_defaults_for_timestamp = true
sql_mode=strict_trans_tables,no_auto_create_user,no_engine_substitution
5.配置环境变量，即将“d:\dev_tools\mysql-5.7.7\bin”添加到path中（注意变量之间用“;”隔开）；
6.添加服务：打开cmd命令模式，切换到目录“d:\dev_tools\mysql-5.7.7\bin”，执行mysqld -install mysql57（可配，默认为mysql）；
7.启动服务：在cmd命令模式下，输入net start mysql57，数据库即可启动。
8.修改root密码：
命令行执行：mysql –u root -p
mysql>show databases;
mysql>use mysql;
mysql> set password=password('123456');　
mysql> flush privileges;
mysql> quit