[mysqld]
# 设置3306端口
port=3306
# 设置mysql的安装目录
basedir=D:\\mysql-8.0.14-winx64 # 切记此处一定要用双斜杠\\，单斜杠我这里会出错，不过看别人的教程，有的是单斜杠。自己尝试吧
# 设置mysql数据库的数据的存放目录
datadir=D:\\mysql-8.0.14-winx64\\Data # 此处同上
# 允许最大连接数
max_connections=200
# 允许连接失败的次数。这是为了防止有人从该主机试图攻击数据库系统
max_connect_errors=10
# 服务端使用的字符集默认为UTF8
character-set-server=utf8
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
# 默认使用“mysql_native_password”插件认证
default_authentication_plugin=mysql_native_password
[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8
[client]
# 设置mysql客户端连接服务端时默认使用的端口
port=3306
default-character-set=utf8

C:\Windows\system32>cd D:\Program Files\mysql-8.0.13-winx64\bin

C:\Windows\system32>d:

D:\Program Files\mysql-8.0.13-winx64\bin>mysqld --initialize --console
2019-01-08T03:28:14.777283Z 0 [System] [MY-013169] [Server] D:\Program Files\mysql-8.0.13-winx64\bin\mysqld.exe (mysqld 8.0.13) initializing of server in progress as process 9460
2019-01-08T03:28:14.839683Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, 
but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to
 be unambiguous.
2019-01-08T03:28:30.391333Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: >wdD)Jf85:93
2019-01-08T03:28:47.786591Z 0 [System] [MY-013170] [Server] D:\Program Files\mysql-8.0.13-winx64\bin\mysqld.exe (mysqld 8.0.13) initializing of server has completed

D:\Program Files\mysql-8.0.13-winx64\bin>

mysql -u root -p

SET PASSWORD=PASSWORD('[修改的密码]');

ALTER USER ‘root'@‘localhost' IDENTIFIED WITH mysql_native_password BY ‘新密码';