MySQL会出现中文乱码问题怎么办

小编给大家分享一下MySQL会出现中文乱码问题怎么办，希望大家阅读完这篇文章后大所收获，下面让我们一起去探讨吧！

1、MySQL会出现中文乱码的原因
当我们在使用MySQL数据库的时候，经常会碰到乱码的问题，看下面的代码。

    mysql> create table test(id int,name varchar(10));Query OK, 0 rows affected (0.01 sec)    mysql> insert into test values(1,'宋蔚然');    ERROR 1366 (HY000): Incorrect string value: '\xE5\xAE\x8B\xE8\x94\x9A...' for column 'name' at row 1    mysql>

相关学习推荐：mysql视频教程

很显然，当插入中文的时候报错，原因在哪呢？

    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     | latin1                     |    | character_set_system     | utf8                       |    | character_sets_dir       | /usr/share/mysql/charsets/ |    +--------------------------+----------------------------+

character_set_client 客户端使用的字符编码
character_set_connection 数据库链接使用的编码
character_set_database 数据库使用的字符编码
原来是字符编码与服务端、数据库的编码不统一而造成的。

2、MySQL会出现中文乱码的解决方法
方法一：设置names

    mysql> set names latin1;        mysql> set names latin1;    Query OK, 0 rows affected (0.00 sec)        mysql> select * from test;    Empty set (0.00 sec)        mysql> insert into test values(1,'宋蔚然');    Query OK, 1 row affected (0.01 sec)        mysql> select * from test;    +------+-----------+    | id   | name      |    +------+-----------+    |    1 | 宋蔚然    |    +------+-----------+    1 row in set (0.00 sec)

再来看一下字符集的设置

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

字符编码统一就不会出现乱码。
解决乱码问题其实就是将客户端的字符编码与服务端、数据库的编码统一。这里的服务端与数据库编码都是latin1，所有set names latin1即可临时解决乱码问题。

方法二：修改数据库配置文件字符集为UTF8
UTF8支持很多语言体系，因此在生产中强烈建议将字符编码设置UTF8。打开数据库的配置文件，分别在[client]，[mysql]，[mysqld]下添加如下内容。

    #vi /mysql/data/3306/my.cnf        [client]    default-character-set=utf8        [mysql]    default-character-set=utf8        [mysqld]    default-storage-engine=INNODB    character-set-server=utf8    collation-server=utf8_general_ci

重启数据库

   [root@test ~]# systemctl restart mysqld

重写创建库和表

    mysql> create database test;    Query OK, 1 row affected (0.00 sec)        mysql> use test;    Database changed    mysql> create table test(id int,name varchar(10));    Query OK, 0 rows affected (0.02 sec)        mysql> insert into test values(1,'宋蔚然');    Query OK, 1 row affected (0.00 sec)        mysql> select * from test;    +------+-----------+    | id   | name      |    +------+-----------+    |    1 | 宋蔚然    |    +------+-----------+    1 row in set (0.00 sec)

再来看一下字符集的设置

    mysql> show variables like '%CHARACTER%';    +--------------------------+----------------------------+    | 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/ |    +--------------------------+----------------------------+

undefined

1、MySQL会出现中文乱码的原因
当我们在使用MySQL数据库的时候，经常会碰到乱码的问题，看下面的代码。

    mysql> create table test(id int,name varchar(10));Query OK, 0 rows affected (0.01 sec)    mysql> insert into test values(1,'宋蔚然');    ERROR 1366 (HY000): Incorrect string value: '\xE5\xAE\x8B\xE8\x94\x9A...' for column 'name' at row 1    mysql>

很显然，当插入中文的时候报错，原因在哪呢？

    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     | latin1                     |    | character_set_system     | utf8                       |    | character_sets_dir       | /usr/share/mysql/charsets/ |    +--------------------------+----------------------------+

character_set_client 客户端使用的字符编码
character_set_connection 数据库链接使用的编码
character_set_database 数据库使用的字符编码
原来是字符编码与服务端、数据库的编码不统一而造成的。

2、MySQL会出现中文乱码的解决方法
方法一：设置names

    mysql> set names latin1;        mysql> set names latin1;    Query OK, 0 rows affected (0.00 sec)        mysql> select * from test;    Empty set (0.00 sec)        mysql> insert into test values(1,'宋蔚然');    Query OK, 1 row affected (0.01 sec)        mysql> select * from test;    +------+-----------+    | id   | name      |    +------+-----------+    |    1 | 宋蔚然    |    +------+-----------+    1 row in set (0.00 sec)

再来看一下字符集的设置

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

字符编码统一就不会出现乱码。
解决乱码问题其实就是将客户端的字符编码与服务端、数据库的编码统一。这里的服务端与数据库编码都是latin1，所有set names latin1即可临时解决乱码问题。

方法二：修改数据库配置文件字符集为UTF8
UTF8支持很多语言体系，因此在生产中强烈建议将字符编码设置UTF8。打开数据库的配置文件，分别在[client]，[mysql]，[mysqld]下添加如下内容。

    #vi /mysql/data/3306/my.cnf        [client]    default-character-set=utf8        [mysql]    default-character-set=utf8        [mysqld]    default-storage-engine=INNODB    character-set-server=utf8    collation-server=utf8_general_ci

重启数据库

   [root@test ~]# systemctl restart mysqld

重写创建库和表

    mysql> create database test;    Query OK, 1 row affected (0.00 sec)        mysql> use test;    Database changed    mysql> create table test(id int,name varchar(10));    Query OK, 0 rows affected (0.02 sec)        mysql> insert into test values(1,'宋蔚然');    Query OK, 1 row affected (0.00 sec)        mysql> select * from test;    +------+-----------+    | id   | name      |    +------+-----------+    |    1 | 宋蔚然    |    +------+-----------+    1 row in set (0.00 sec)

再来看一下字符集的设置

    mysql> show variables like '%CHARACTER%';    +--------------------------+----------------------------+    | 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/ |    +--------------------------+----------------------------+

看完了这篇文章，相信你对MySQL会出现中文乱码问题怎么办有了一定的了解，想了解更多相关知识，欢迎关注行业资讯频道，感谢各位的阅读！