配置文件 my.cnf

默认字符集为 utf-8
default-character-set = utf-8
character-set-server= utf-8

mysql 命令

mysql设置编码命令 

SET character_set_client = utf8; 
SET character_set_connection = utf8; 
SET character_set_database = utf8; 
SET character_set_results = utf8;/*这里要注意很有用*/ 
SET character_set_server = utf8; 

SET collation_connection = utf8_bin; 
SET collation_database = utf8_bin; 
SET collation_server = utf8_bin; 


#查看数据库编码
show variables like 'characte%';

+--------------------------+----------------------------+
| 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/charsets/ | 
+--------------------------+----------------------------+

#创建数据库时指定编码

#GBK: 
create database test2 DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci;
#UTF8: 
CREATE DATABASE `test2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci

#数据库连接串中指定字符集
URL=jdbc:mysql://yourIP/college?user=root&password=yourPassword&useUnicode=true&characterEncoding=gbk