与mysql容器进行数据交互中文乱码解决方法

一、查看client的语言格式

将语言格式均设置为C.UTF-8，可以通过在Dockerfile里添加ENV命令来设置语言格式。

root@3430f38caf85:/# locale
LANG=C.UTF-8
LANGUAGE=C.UTF-8
LC_CTYPE="C.UTF-8"
LC_NUMERIC="C.UTF-8"
LC_TIME="C.UTF-8"
LC_COLLATE="C.UTF-8"
LC_MONETARY="C.UTF-8"
LC_MESSAGES="C.UTF-8"
LC_PAPER="C.UTF-8"
LC_NAME="C.UTF-8"
LC_ADDRESS="C.UTF-8"
LC_TELEPHONE="C.UTF-8"
LC_MEASUREMENT="C.UTF-8"
LC_IDENTIFICATION="C.UTF-8"
LC_ALL=C.UTF-8

二、查看mysql容器编码格式

可以看到很多项目的语言格式不是utf8

image.png

二、设置mysql容器全局编码为UTF-8，修改my.cnf文件

[mysqld]
character-set-server=utf8 
[client]
default-character-set=utf8 
[mysql]
default-character-set=utf8

之后再查看语言格式，已经变为utf8。

mysql> show variables like '%char%';
+--------------------------+--------------------------------+
| Variable_name            | Value                          |
+--------------------------+--------------------------------+
| character_set_client     | utf8                           |
| character_set_connection | utf8                           |
| character_set_database   | utf8                           |
| character_set_filesystem | binary                         |
| character_set_results    | utf8                           |
| character_set_server     | utf8                           |
| character_set_system     | utf8                           |
| character_sets_dir       | /usr/share/mysql-8.0/charsets/ |
+--------------------------+--------------------------------+

之后重启mysql容器.
注意：读取修改my.cnf文件之前建的table依然会有乱码，修改后新建table才不会有乱码!!!!