mysql 5.5.50 解压版安装完成后输入中文乱码，于是查看了下客户端和服务端字符集：

mysql> show variables like '%colla%';

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

| Variable_name | Value |

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

| collation_connection | utf8_general_ci |

| collation_database | utf8_general_ci |

| collation_server | utf8_general_ci |

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

3 rows in set (0.00 sec)

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 | G:\mysql-5.5.50-winx64\share\charsets\ |

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

8 rows in set (0.00 sec)

本来之前在my.ini [mysqld] 和 [client] 下面已经设置了字符集了怎么没起作用呢？后来在网上查到5.5 版本之后的字符集设置方式不同于5.5 之前的版本； 5.5之后的版本

[client]

#设置客户端字符集

default-character-set = utf8

[mysqld]

#设置字符集为utf8

#loose-default-character-set = utf8

default-storage-engine = INNODB

character-set-server = utf8

collation-server = utf8_general_ci

设置完成后重启mysql 新建表依旧没有效果，重新建立一个数据库后再新建表就好了。

设置完成后的字符集

mysql> show variables like '%colla%';

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

| Variable_name | Value |

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

| collation_connection | utf8_general_ci |

| collation_database | utf8_general_ci |

| collation_server | utf8_general_ci |

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

3 rows in set (0.00 sec)

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 | G:\mysql-5.5.50-winx64\share\charsets\ |

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

8 rows in set (0.00 sec)

附：mysql 5.5 之前版本字符集设置方式

[client]

default-character-set = utf8

[mysqld]

character_set_server=utf8