首頁  >  文章  >  資料庫  >  解決MySQL會出現中文亂碼問題的方法

解決MySQL會出現中文亂碼問題的方法

coldplay.xixi
coldplay.xixi轉載
2020-07-06 16:20:112717瀏覽

解決MySQL會出現中文亂碼問題的方法

1、MySQL會出現中文亂碼的原因
當我們在使用MySQL資料庫的時候,常常會碰到亂碼的問題,看下面的程式碼。

    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>

相關學習推薦:mysql影片教學

#很顯然,當插入中文的時候報錯,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 用戶端使用的字元編碼
character_set_connection 資料庫連結使用的編碼
character_set_database 資料庫使用的字元編碼
原來是字元編碼與服務端、資料庫的編碼不統一而造成的。

2、MySQL會出現中文亂碼的解決方法
#方法一:設定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)

再來看一下字元集的設定

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

字元編碼統一就不會出現亂碼。
解決亂碼問題其實就是將客戶端的字元編碼與服務端、資料庫的編碼統一。這裡的服務端與資料庫編碼都是latin1,所有set names latin1即可暫時解決亂碼問題。

方法二:修改資料庫設定檔字元集為UTF8
#UTF8支援許多語言體系,因此在生產中強烈建議將字元編碼設定UTF8。開啟資料庫的設定文件,分別在[client],[mysql],[mysqld]下新增如下內容。

    #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

重啟資料庫

   [root@test ~]# systemctl restart mysqld

重寫建立函式庫與表格

    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)

再看一下字元集的設定

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

               

##1、MySQL會出現中文亂碼的原因

當我們在使用MySQL資料庫的時候,常常會碰到亂碼的問題,看下面的程式碼。

    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>
很顯然,當插入中文的時候報錯,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 用戶端使用的字元編碼

character_set_connection 資料庫連結使用的編碼

character_set_database 資料庫使用的字元編碼

原來是字元編碼與服務端、資料庫的編碼不統一而造成的。


2、MySQL會出現中文亂碼的解決方法

#方法一:設定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)
再來看一下字元集的設定
     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/ |
    +--------------------------+----------------------------+

字元編碼統一就不會出現亂碼。

解決亂碼問題其實就是將客戶端的字元編碼與服務端、資料庫的編碼統一。這裡的服務端與資料庫編碼都是latin1,所有set names latin1即可暫時解決亂碼問題。


方法二:修改資料庫設定檔字元集為UTF8

#UTF8支援許多語言體系,因此在生產中強烈建議將字元編碼設定UTF8。開啟資料庫的設定文件,分別在[client],[mysql],[mysqld]下新增如下內容。

    #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
重啟資料庫
   [root@test ~]# systemctl restart mysqld

重寫建立庫和表格

    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)

再來看字元集的設定

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

以上是解決MySQL會出現中文亂碼問題的方法的詳細內容。更多資訊請關注PHP中文網其他相關文章!

陳述:
本文轉載於:csdn.net。如有侵權,請聯絡admin@php.cn刪除