MySQL 中文insert报错Incorrect string value:

序言:中文录入失败,报错:Incorrect string value: '\xCC\xEC\xB2\xC5',如下所示:

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

mysql> insert into t select 2 as a ,'天才' as b;
ERROR 1366 (HY000): Incorrect string value: '\xCC\xEC\xB2\xC5' for column 'b' at row 1
mysql>
mysql>

1,去查看数据库的字符集,是utf8,显示正常的。
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/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.00 sec)

mysql>

2,去查看连接客户端的字符集,
vim /etc/my.cnf
#----------------- UTF-8 -----------------#
skip-character-set-client-handshake
init-connect='SET NAMES utf8'
character-set-server=utf8
#----------------- UTF-8 -----------------#
看到connect连接有utf8设置,也保证了,通过mysql命令行登录看到的是utf8编码的。

3,通过sqlyog远程工具操作,在Query窗口执行如下命令:
SET NAMES utf8;
INSERT INTO t SELECT 3  AS a ,'第二梦'  AS b;
是成功的,执行界面显示如下:
2 queries executed, 2 success, 0 errors, 0 warnings

Query: set names utf8

0 row(s) affected

Execution Time : 0 sec
Transfer Time  : 0 sec
Total Time    : 0.001 sec
--------------------------------------------------

Query: insert into t select 3 as a ,'第二梦' as b

1 row(s) affected

Execution Time : 0.002 sec
Transfer Time  : 0 sec
Total Time    : 0.002 sec

在sqlyog窗口查询t表,也正常显示中文字符,如下图所示:

MySQL 中文insert报错Incorrect string value:

但是在linux后面使用mysql窗口命令登录,还是乱码,如下所示:

mysql> SELECT * FROM t;
+---+-----------+
| a | b        |
+---+-----------+
| 1 | bb        |
| 1 | ??      |
| 2 | 骞村.    |
| 3 | 绗.?姊?|
+---+-----------+
4 rows in set (0.00 sec)

mysql>

那么以此推断,问题在哪里呢,客户端sqlyog能正常录入中文显示中文,而linux的mysql窗口不行,得去检查os层的linux操作系统的字符集设置。

4,检查mysql服务器所在的linux os的字符集
[root@data01 ~]# cat /etc/sysconfig/i18n
LANG="zh_CN.GB18030"
LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN"
SUPPORTED="zh_CN.UTF-8:zh_CN:zh:en_US.UTF-8:en_US:en"
SYSFONT="lat0-sun16"
modified by timman on 2015/03/03

看到这里面不是GB18030,不是utf8,所以需要重新设置下,从线上copy一下/etc/sysconfig/i18n 的内容,将此改成如下
[root@data01 ~]# cat /etc/sysconfig/i18n
# LANG="zh_CN.GB18030"
# LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN"
# SUPPORTED="zh_CN.UTF-8:zh_CN:zh:en_US.UTF-8:en_US:en"
# SYSFONT="lat0-sun16"
# modified by timman on 2015/03/03
LANG="zh_CN.UTF-8"

然后重启linux,重启mysql,或者export LANG="zh_CN.UTF-8";
[root@data01 ~]# service mysqld5612 restart
Shutting down MySQL......... SUCCESS!
Starting MySQL..................................................................... SUCCESS!
[root@data01 ~]#

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