从官网下载MySQL-5.7.11-winx64压缩版，安装后发现竟然有密码，尝试无果，通过修改密码搞定
安装成功后：
关闭mysql服务在跟目录下修改文件my.ini，内容如下：注意两点 1：内容中myql的安装目录换成读者的安装目录；2最后一行代表登录是否需要密码，这里我们绕过密码登录进入mysql修改密码，所以不注释skip-grant-tables
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####################配置文件开始###################
# 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
# D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64
basedir ="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/"
datadir ="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/"
tmpdir ="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/"
socket ="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/mysql.sock"
log-error="D:\Program Files\mysql-5.7.11-winx64\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="D:\Program Files\mysql-5.7.11-winx64\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"
skip-grant-tables
####################配置文件结束###################
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修改保存后，在cmd中，由于我们已经在path配置了环境变量，所以我们可以直接启动mysql
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net start mysql
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启动成功后，登录mysql
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mysql -u root -p
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密码为空 这里我们直接回车登录成功
登录成功后，我们修改数据库执行如下
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use mysql
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update user set authentication_string=password("123456") where user="root";
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这里注意最后必需加上分号
成功后刷新
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flush privileges;
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致此我们密码就修改成功了，退出关闭mysql服务，然后把my.ini中最后一行注释掉，从新启动mysql服务，发现新密码生效。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。