这个bug是因为数据库编码格式不统一导致的
解决方法:
1. SHOW VARIABLES LIKE 'character_set_%';

2.SHOW VARIABLES LIKE 'collation_%';

3.
set character_set_database = utf8;
set character_set_results = utf8;
set character_set_server = utf8;
set character_set_system = utf8;

set collation_server = utf8_general_ci;
set collation_database = utf8_general_ci;

4.查看每张表的编码格式
show create table 表名;

5.更改每一张表编码格式
alter table 表名 convert to character set utf8mb4 collate utf8mb4_bin;
6.重启数据库
ok!
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