01、去官网下载zip包 https://dev.mysql.com/downloads/mysql/
02、在本地某目录解压压缩包（我这里是D:\dev\mysql8\mysql1\mysql-8.0.16-winx64）
02、在本地某目录解压压缩包（我这里是D:\dev\mysql8\mysql1\mysql-8.0.16-winx64）
03、在解压后的目录下创建文件夹data（这个文件夹名称不一定非要叫data）和文件my.ini，文件夹结构如下图所示：
04、my.ini的内容如下：
[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.
# 设置mysql的安装目录
basedir = D:\dev\mysql8\mysql1\mysql-8.0.16-winx64
# 设置mysql数据库的数据的存放目录
datadir = D:\dev\mysql8\mysql1\mysql-8.0.16-winx64\data
# 设置3307端口
port = 3307
# 待同步的数据库
# binlog-do-db=leven
# server_id = .....
# 忘记密码时使用
# skip-grant-tables
# 设置协议认证方式(重点啊)
# default_authentication_plugin=mysql_native_password
# 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 = 2M
# read_rnd_buffer_size = 2M
# sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
# 服务端使用的字符集默认为utf8mb4
character-set-server = utf8mb4
# performance_schema_max_table_instances = 600
# table_definition_cache = 400
# table_open_cache = 256
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
[mysql]
# 设置mysql客户端默认字符集
default-character-set = utf8mb4
[client]
default-character-set = utf8mb4
05、在bin目录下打开命令行；
06、执行 mysqld --initialize --console 完成初始化，此时控制台会打印出一个随机的密码，记录下来
07、数据库服务安装：
mysqld --install 【服务名】
08、启动服务 net start 【服务名】
09、登录：
mysql -uroot -p
10、此时如果没有正常登录，提示1045错误的话，执行如下命令
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
// 关闭服务
net stop 【服务名】
// 无密码启动mysql服务
mysqld --console --skip-grant-tables --shared-memory
// 控制台会有如下信息：
D:\dev\mysql8\mysql1\mysql-8.0.16-winx64\bin>mysqld --console --skip-grant-table
s --shared-memory
2019-05-26T14:41:11.845454Z 0 [System] [MY-010116] [Server] D:\dev\mysql8\mysql1
\mysql-8.0.16-winx64\bin\mysqld.exe (mysqld 8.0.16) starting as process 10220
2019-05-26T14:41:14.140585Z 0 [Warning] [MY-010068] [Server] CA certificate ca.p
em is self signed.
2019-05-26T14:41:14.171587Z 0 [System] [MY-010931] [Server] D:\dev\mysql8\mysql1
\mysql-8.0.16-winx64\bin\mysqld.exe: ready for connections. Version: '8.0.16' s
ocket: '' port: 0 MySQL Community Server - GPL.
2019-05-26T14:41:14.290594Z 0 [Warning] [MY-011311] [Server] Plugin mysqlx repor
ted: 'All I/O interfaces are disabled, X Protocol won't be accessible'
11、打开另一个终端
依次执行如下命令：
// 空密码登录
mysql -uroot -p
// 免密码登陆的情况下设置密码为空
UPDATE mysql.user SET authentication_string = '' WHERE user = 'root' and host = 'localhost';
// 刷新权限
flush privileges;
// 修改加密方式并设置密码为123456
ALTER user 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';
// 刷新权限
flush privileges;
12、此时使用Navicat之类的客户端就可以直接连接了；