解决mysql中文乱码问题

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SQL Life: 解决mysql中文乱码问题
时间：2017/6/29 14:09:14 作者：solgle 来源：solgle.com 查看：824 评论：0
内容摘要：创建数据表StudentCREATE TABLE student (id INT(10) NOT NULL PRIMARY KEY ,name VARCHAR(20) NOT NULL ,sex VARCHAR(4) ,birth YEAR,depa...
--创建数据表Student

CREATE TABLE student (

id INT(10) NOT NULL PRIMARY KEY ,

name VARCHAR(20) NOT NULL ,

sex VARCHAR(4) ,

birth YEAR,

department VARCHAR(20) ,

address VARCHAR(50)

);

--插入数据表student数据

INSERT INTO student VALUES( 901,'张老大', '男',1985,'计算机系', '北京市海淀区');

INSERT INTO student VALUES( 902,'张老二', '男',1986,'中文系', '北京市昌平区');

INSERT INTO student VALUES( 903,'张三', '女',1990,'中文系', '湖南省永州市');

INSERT INTO student VALUES( 904,'李四', '男',1990,'英语系', '辽宁省阜新市');

INSERT INTO student VALUES( 905,'王五', '女',1991,'英语系', '福建省厦门市');

INSERT INTO student VALUES( 906,'王六', '男',1988,'计算机系', '湖南省衡阳市');

--用工具或者是xshell登录mysql查询表数据，中文显示乱码

mysql> select * from student;

+-----+------+------+-------+------------+---------+

| id | name | sex | birth | department | address |

+-----+------+------+-------+------------+---------+

| 901 | ??? | ? | 1985 | ???? | ?????? |

| 902 | ??? | ? | 1986 | ??? | ?????? |

| 903 | ?? | ? | 1990 | ??? | ?????? |

| 904 | ?? | ? | 1990 | ??? | ?????? |

| 905 | ?? | ? | 1991 | ??? | ?????? |

| 906 | ?? | ? | 1988 | ???? | ?????? |

+-----+------+------+-------+------------+---------+

6 rows in set (0.00 sec)

mysql>

---查看当前字符集设置

mysql> show variables like 'character%';

+--------------------------+----------------------------+

| Variable_name | Value |

+--------------------------+----------------------------+

| character_set_client | latin1 |

| character_set_connection | latin1 |

| character_set_database | latin1 |

| character_set_filesystem | binary |

| character_set_results | latin1 |

| character_set_server | latin1 |

| character_set_system | utf8 |

| character_sets_dir | /usr/share/mysql/charsets/ |

+--------------------------+----------------------------+

8 rows in set (0.00 sec)

mysql>

--修改mysql的配置文件my.cnf（my.ini）加入默认编码utf8

mysql> system cat /etc/my.cnf

[mysql]

default-character-set=utf8

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

user=mysql

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

character-set-server=utf8

character-set-filesystem = utf8

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

skip-grant-tables

--需要重启数据库

[root@nameNode ~]# service mysqld restart

Stopping mysqld: [ OK ]

Starting mysqld: [ OK ]

mysql> show variables like 'character%';

+--------------------------+----------------------------+

| 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 | utf8 |

| character_set_system | utf8 |

| character_sets_dir | /usr/share/mysql/charsets/ |

+--------------------------+----------------------------+

8 rows in set (0.00 sec)

mysql>

--奇怪的是character_set_database仍然为latin1编码

--再次重启mysql

[root@nameNode ~]# service mysqld restart

Stopping mysqld: [ OK ]

Starting mysqld: [ OK ]

--这下全为utf8了，难道有延迟...

mysql> show variables like 'character%';

+--------------------------+----------------------------+

| Variable_name | Value |

+--------------------------+----------------------------+

| character_set_client | utf8 |

| character_set_connection | utf8 |

| character_set_database | utf8 |

| character_set_filesystem | utf8 |

| character_set_results | utf8 |

| character_set_server | utf8 |

| character_set_system | utf8 |

| character_sets_dir | /usr/share/mysql/charsets/ |

+--------------------------+----------------------------+

8 rows in set (0.00 sec)

而Toad读取MySQL的character_set_system或者character-set-server设置决定Toad本地字符集。

重设MySQL默认字符集，查看官方文档后，设置如下：

在my.cnf配置文件中增加如下2条设置

[mysqld]

character-set-server = utf8

character-set-filesystem = utf8

--新建的数据库会以新定义的编码为准、如果数据库已经创建，可以尝试用以下语句来更改

alter database xxx CHARACTER SET utf8; ---测试下

标签：mysql中文乱码


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