skip-character-set-client-handshake 与 character-set-client-handshake

character-set-client-handshake=0   //使用服务端字符集

https://www.cnblogs.com/zengkefu/p/5652510.html

 

my.cnf

[mysql]

default-character-set = gbk

[mysqld]

skip-character-set-client-handshake=1   跳过mysql程序起动时的字符参数设置 ，使用服务器端字符集设置

 修改不过来

[root@localhost ~]# mysql -uroot -p --default-character-set=latin1
Enter password: 
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/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.01 sec)

mysql> set names latin1 ;    //进入环境中才可以设置

Query OK, 0 rows affected (0.00 sec)

mysql> show variables like "%char%";
+--------------------------+------------------------------------+
| Variable_name            | Value                              |
+--------------------------+------------------------------------+
| character_set_client     | latin1                             |
| character_set_connection | latin1                             |
| character_set_database   | utf8                               |
| character_set_filesystem | binary                             |
| character_set_results    | latin1                             |
| character_set_server     | utf8                               |
| character_set_system     | utf8                               |
| character_sets_dir       | /usr/local/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.01 sec)

 

 

 

[my.cnf]

[mysql]
default-character-set = gbk

[mysqld]
character-set-client-handshake = 0

[root@localhost ~]# mysql -uroot -p --default-character-set=latin1
Enter password: 

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/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.01 sec)

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

mysql> show variables like "%char%";
+--------------------------+------------------------------------+
| Variable_name            | Value                              |
+--------------------------+------------------------------------+
| character_set_client     | gbk                                |
| character_set_connection | gbk                                |
| character_set_database   | utf8                               |
| character_set_filesystem | binary                             |
| character_set_results    | gbk                                |
| character_set_server     | utf8                               |
| character_set_system     | utf8                               |
| character_sets_dir       | /usr/local/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.18 sec)

 

 

 

 

 

[mysqld]

character-set-server = gbk                  
skip-character-set-client-handshake=1   //使用服务端字符集

[root@localhost ~]# mysql -uroot -p --default-character-set=latin1
Enter password: 

mysql> show variables like "%char%";
+--------------------------+------------------------------------+
| Variable_name            | Value                              |
+--------------------------+------------------------------------+
| character_set_client     | gbk                                |
| character_set_connection | gbk                                |
| character_set_database   | gbk                                |
| character_set_filesystem | binary                             |
| character_set_results    | gbk                                |
| character_set_server     | gbk                                |
| character_set_system     | utf8                               |
| character_sets_dir       | /usr/local/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.02 sec)

 

 

 

[mysqld]

character-set-server = gbk                  
character-set-client-handshake=0   //使用服务端字符集

[root@localhost ~]# mysql -uroot -p --default-character-set=latin1
Enter password: 

mysql> show variables like "%char%";
+--------------------------+------------------------------------+
| Variable_name            | Value                              |
+--------------------------+------------------------------------+
| character_set_client     | gbk                                |
| character_set_connection | gbk                                |
| character_set_database   | gbk                                |
| character_set_filesystem | binary                             |
| character_set_results    | gbk                                |
| character_set_server     | gbk                                |
| character_set_system     | utf8                               |
| character_sets_dir       | /usr/local/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.02 sec)

 

 

 

[mysqld]
character-set-server = gbk
character-set-client-handshake = 1

[root@localhost ~]# mysql -uroot -p --default-character-set=latin1
Enter password: 

mysql> show variables like "%char%";
+--------------------------+------------------------------------+
| Variable_name            | Value                              |
+--------------------------+------------------------------------+
| character_set_client     | latin1                             |
| character_set_connection | latin1                             |
| character_set_database   | gbk                                |
| character_set_filesystem | binary                             |
| character_set_results    | latin1                             |
| character_set_server     | gbk                                |
| character_set_system     | utf8                               |
| character_sets_dir       | /usr/local/mysql56/share/charsets/ |
+--------------------------+------------------------------------+
8 rows in set (0.02 sec)

 

mysql 字符集非交互设置:当mysql起动连到mysqld时,非手动命令

mysql字符集交互设置:通过命令行手动设置 

 

 

MySQL 5.5版本解决中文乱码问题时my.ini内

[mysqld]项中不能再写default-character-set=utf8

 

来看看如何解决乱码问题：

在mysql中默认字符集是latin1，

想要设置字符集为uft-8，可以在 my.cnf 文件中添加以下设置：

·［client］

1	default-character-set=utf8

·［mysqld］

1	default-character-set=utf8

2	skip-character-set-client-handshake #此处是忽略客户端的字符集，使用服务器的设置

（skip语句和client中的default选一个）

当然你可以在建立数据库是规定字符集：

1	create database db_name default character set utf8 callate utf8-general-ci；

也可以在链接数据库前设置：

1	set names 'utf8'；

重点在红字上，加了skip-character-set-client-handshake，client里面就不用加default了

01	show variables like 'characte%';

02	+--------------------------+----------------------------+

03	| Variable_name | Value |

04	+--------------------------+----------------------------+

05	| character_set_client | utf8 |

06	| character_set_connection | utf8 |

07	| character_set_database | utf8 |

08	| character_set_filesystem | binary |

09	| character_set_results | utf8 |

10	| character_set_server | utf8 |

11	| character_set_system | utf8 |

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

13	+--------------------------+----------------------------+

但是根据以上的配置过了后，mysql就无法启动了，这是为什么呢？往下看：  

 

在5.1版本时，为了解决中文乱码问题设置默认字符集为utf8时，在my.ini内的 [mysql] 和 [mysqld] 项中都是写：

1	default-character-set=utf8

到了5.5版本， [mysql] 项内可以这么写， [mysqld] 项内这么写在启动MySQL服务时会有1067错误，经查询发现这里必须要这样写：

1	character-set-server=utf8

目前已知5.1和5.5有这么一个不同之处，且是从5.5的安装版本自动生成的my.ini文件中看出的。配置免安装的5.5版本还需要进一步的实验。