Mysql 5.5 中文输入后显示“？？”乱码

1.以root登陆，在终端输入命令 sudo gedit /etc/mysql/my.cnf在打开的文件中

找到［client]在下面加入

default-character-set=utf8

找到 [mysqld_safe]在下面加入

default-character-set=utf8

找到[mysqld]在下面加入

character-set-server=utf8

collation-server=utf8_general_ci
找到［mysql］在下面加入

default-character-set=utf8

上述红色的是5.5以后必须按照这个修改，不然重启mysql后会出现start：Job
failed to start

然后重启 /ect/init.d/mysql restart

2.查看现在mysql的编码

进入mysql命令：sudo mysql －u root -p

检查mysql字符集命令：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/ |

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

3.注意创建表的时候要使用utf8格式
create table customers

(

cust_id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,

cust_name CHAR(50) NOT NULL,

cust_sex CHAR(1) NOT NULL DEFAULT 0,

cust_address CHAR(50) NULL,

cust_contact CHAR(50) NULL

8)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

4. ok