3.配置my.ini檔案

在解壓根目錄新建一個my.ini的檔案

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/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.

[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:\\Program Files\mysql-5.7.21-winx64"
 datadir = "D:\\Program Files\mysql-5.7.21-winx64\data"
 port = 3306
 character_set_server = utf8
 
# server_id = .....


# 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 
 

4.管理員方式啟動命令提示窗符

進入mysql解壓目錄到bin目錄下

如：D:\Program Files\mysql-5.7.21-winx64\bin

分別執行：

（1）初始化：mysqld -initialize-insecure

如果報錯failed to set datadir to 則 執行一下  mysqld --initialize --user=mysql --console，再執行（1）；

正確之後會在Mysql解壓根目錄生成data資料夾以及相關檔案

（2）mysqld -install

*如提示Install/Remove of the Service Denied，說明不是已管理員的方式進入的命令提示符

（3）啟動服務：net start mysql

（4）登陸，改密碼 mysql -u root -p

【成功登陸的直接到（5）】

我的出現了

在my.ini中增加

重啟服務，成功登陸

（5）執行改密碼語句 （正常登陸的使用set password= password(‘新密碼’);）

update user set authentication_string = password("新密碼") where user='root';

（6）exit;  net stop mysql

(7)登陸成功的忽略這一步

到my.ini中註釋掉

重啟進入之後set password= password(‘新密碼’);

到此就可以正常使用了。

（8）測試 show databases;

5.寫兩個bat檔案用於啟動和關閉mysql服務

（1）啟動mysql服務

@echo off
echo 確定要啟動MySQL服務嗎？
pause
net start mysql
echo 啟動MySQL服務完成，請確認有沒有錯誤發生。
Pause