mysql数据库编码集设置为utf8

最新推荐文章于 2025-07-22 22:59:28 发布

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最新推荐文章于 2025-07-22 22:59:28 发布

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分类专栏： mysql 文章标签：数据库编码 utf8 mysql character

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本文介绍如何在MySQL数据库中解决中文显示问题，通过设置数据库编码为UTF8，包括创建和修改现有数据库的编码方式。

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在mysql数据库中， 当插入数据无法支持中文时， 可将该数据库的编码集设置为utf8， 故在创建数据库时， 将数据库编码集及其他字符编码设置为utf8。
如果之前创建的数据库的数据库编码集不为utf8， 可以进行如下设置：

mysql> alter database 数据库名 character set utf8;
或删除原有旧的数据库， 再重新创建新的数据库并将默认的编码集设置为utf8:

mysql> create database 数据库名 DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

* 删除数据库：

mysql> drop database dbname if exists dbname;

* 创建数据库：

mysql> create database dbname if not exists dbname；

为确保 create database dbname 命令创建的数据库编码集为utf8， 我们可对mysql的配置文件进行修改

windows下的mysql配置文件为my.ini， my.ini存在于mysql的安装目录下

linux下的mysql配置文件为my.cnf， mysql.cnf存在于mysql的安装目录下或/etc/下

在my.cnf或my.ini下找到[mysqld]， 在其下方添加一行：

character_set_server=utf8

然后保存退出， 并重启mysql服务即可。

查看字符编码：

mysql> show variables like '%character%';
或

mysql> show variables like 'character_set_%'; 
或

mysql> use 数据库名；
mysql> \s
或
mysql> use 数据库名
mysql> status;
具体操作如下：

mysql> SHOW VARIABLES LIKE 'character_set_%'; 
+--------------------------+----------------------------------+
| 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/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.00 sec)


mysql> set character_set_database = utf8;
Query OK, 0 rows affected (0.00 sec)


mysql> set character_set_server = utf8;
Query OK, 0 rows affected (0.00 sec)


mysql> SHOW VARIABLES LIKE 'character_set_%';
+--------------------------+----------------------------------+
| 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/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.00 sec)


mysql> use db_ets;
Database changed
mysql> \s
--------------
mysql  Ver 14.14 Distrib 5.7.5-m15, for linux-glibc2.5 (x86_64) using  EditLine wrapper


Connection id:		16
Current database:	db_ets
Current user:		root@localhost
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server version:		5.7.5-m15 MySQL Community Server (GPL)
Protocol version:	10
Connection:		Localhost via UNIX socket
Server characterset:	utf8
Db     characterset:	utf8
Client characterset:	utf8
Conn.  characterset:	utf8
UNIX socket:		/tmp/mysql.sock
Uptime:			23 min 45 sec


Threads: 3  Questions: 487  Slow queries: 0  Opens: 144  Flush tables: 1  Open tables: 129  Queries per second avg: 0.341
--------------


mysql> status;
--------------
mysql  Ver 14.14 Distrib 5.7.5-m15, for linux-glibc2.5 (x86_64) using  EditLine wrapper


Connection id:		16
Current database:	db_ets
Current user:		root@localhost
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server version:		5.7.5-m15 MySQL Community Server (GPL)
Protocol version:	10
Connection:		Localhost via UNIX socket
Server characterset:	utf8
Db     characterset:	utf8
Client characterset:	utf8
Conn.  characterset:	utf8
UNIX socket:		/tmp/mysql.sock
Uptime:			24 min 14 sec


Threads: 5  Questions: 501  Slow queries: 0  Opens: 144  Flush tables: 1  Open tables: 129  Queries per second avg: 0.344
--------------


mysql>

 OK, Enjoy it!!!