一、前言
为什么MySQL中存储中文会乱码？
https://zh.wikipedia.org/wiki/%E5%AD%97%E7%AC%A6%E7%BC%96%E7%A0%81
mysql database字符编码默认是latin1，并不支持中文
本篇文章解决办法适用范围？
Linux下的mysql 5.6+版本
其他版本未尝试过，不敢保证可行
二、MySQL编码设置
1、查看MySQL字符编码
#登录mysql
mysql -u rrot -p
#在mysql中查询字符编码设置
mysql> show variables like '%char%';
+--------------------------------------+----------------------------+
| Variable_name | Value |
+--------------------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
如果character_set_database = latin1那说明确实是字符编码造成的乱码问题
2、查找配置文件位置
whereis my.cnf
3、修改配置文件
具体请看#修改1，#修改2
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
#修改1：增加client配置
[client]
default-character-set=utf8mb4
[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
#
# 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
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
#修改2：增加mysqld配置
#charset
character-set-server=utf8mb4
collation-server=utf8mb4_general_ci
4、重启mysql服务
#重启后配置即可生效
systemctl restart mysqld
三、备注
- 相关阅读
MySQL中的utf8
http://www.infoq.com/cn/articles/in-mysql-never-use-utf8-use-utf8
