1、到mysql官网（http://dev.mysql.com/downloads/mysql/）下载压缩包，我的是win7 64位的，根据自己的系统进行下载

2、解压到自己的目录，我的是 E:\software\dataBase\mysql-5.7.11-winx64，并修改其目录下的my-default.ini文件

 # 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]
 port=3306
 basedir =E:\software\dataBase\mysql-5.7.11-winx64
 datadir =E:\software\dataBase\mysql-5.7.11-winx64\data
 tmpdir =E:\software\dataBase\mysql-5.7.11-winx64\data
 socket =E:\software\dataBase\mysql-5.7.11-winx64\data\mysql.sock
 log-error =E:\software\dataBase\mysql-5.7.11-winx64\data\mysql_error.log
 
 #server_id = 2
 #skip-locking

 max_connections=100
 table_open_cache=256
 query_cache_size=1M
 

 tmp_table_size=32M
 thread_cache_size=8


 innodb_data_home_dir=E:\software\dataBase\mysql-5.7.11-winx64\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
 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"
 #sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

3、cd 到 E:\software\dataBase\mysql-5.7.11-winx64\bin目录

4、执行 mysqld.exe --initialize --user=mysql 命令

5、执行 mysqld.exe -install  安装服务命令

6、执行 net start mysql 检查是否安装成功

7、执行mysql mysql -uroot -p 进入mysql

8、输入密码，第一次密码可以从下面文件中找到

输入密码，进入如下界面

9、执行  set password = password('mysql');  命令 重新设置密码