MySQL5.7.20编码修改my.ini无效,数据库报错

因为之前要做一个类似朋友圈的项目，MySQL编码被我改成了utf8mb4，现在又要去做导师的一个东西，需要改回utf8，但是修改my.ini无效，请问是什么原因呢？

现在查到的编码如下：

+--------------------------+---------------------------------------------------------+
| Variable_name            | Value                                                   |
+--------------------------+---------------------------------------------------------+
| character_set_client     | gbk                                                     |
| character_set_connection | gbk                                                     |
| character_set_database   | utf8                                                    |
| character_set_filesystem | binary                                                  |
| character_set_results    | gbk                                                     |
| character_set_server     | utf8                                                    |
| character_set_system     | utf8                                                    |
| character_sets_dir       | C:\Program Files\MySQL\MySQL Server 5.7\share\charsets\ |
| collation_connection     | gbk_chinese_ci                                          |
| collation_database       | utf8_general_ci                                         |
| collation_server         | utf8_general_ci                                         |
+--------------------------+---------------------------------------------------------+

my.ini部分配置如下：

[client]

port=3306

default-character-set = utf8

[mysql]
no-beep

default-character-set = utf8

[mysqld]


port=3306

datadir=C:/ProgramData/MySQL/MySQL Server 5.7/Data

character-set-server = utf8

init-connect='set names utf8'

collation-server=utf8_general_ci

数据库服务中的配置文件也是对的上的。

--defaults-file="C:\ProgramData\MySQL\MySQL Server 5.7\my.ini" MySQL57