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Linux下修改MySQL编码的方法影响项目乱码问题_MySQL

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Release: 2016-06-01 13:29:34
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Linux下修改MySQL编码的方法影响项目乱码问题

 

默认登录mysql之后可以通过SHOW VARIABLES语句查看系统变量及其值。 

  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/ |

-------------------------- ---------------------------- 

 

说明:以下是在CentOS-6.2下的设置  (不同的版本可能有些差异,比如文件的位置。但设置的内容应该是一样的) 

1. 找到mysql的配置文件,拷贝到etc目录下,第一步很重要 

  把/usr/share/doc/mysql-server-5.1.52/my-large.cnf 复制到 /etc/my.cnf 

  即用命令:cp /usr/share/doc/mysql-server-5.1.52/my-large.cnf  /etc/my.cnf 

2. 打开my.cnf修改编码 

  在[client]下增加default-character-set=utf8 

  在[mysqld]下增加default-character-set=utf8 

  同时加上init_connect='SET NAMES utf8' (设定连接mysql数据库时使用utf8编码,以让mysql数据库为utf8运行) 

3.重新启动mysql 

  service mysqld restart 

  再次输入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/ |

-------------------------- ---------------------------- 

  即使做了以上修改如果直接数据库再创建表,然后存入中文,取出来的会是问号。解决的办法是:创建数据库的时候指明默认字符集为utf8,如: 

  create database test default character set utf8; 

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