ssh存入数据库乱码问题

1.默认mysql的字符集是latin1(ISO_8859_1)通常，查看系统的字符集和排序方式的设定可以通过下面的两条命令：

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       | C:\Program Files\MySQL\MySQL Server 5.1\share\charsets\ | +--------------------------+---------------------------------------------------------+

 

mysql> SHOW VARIABLES LIKE 'collation_%';

+----------------------+-----------------+ | Variable_name        | Value           | +----------------------+-----------------+ | collation_connection | utf8_general_ci | | collation_database   | utf8_unicode_ci | | collation_server     | utf8_general_ci | +----------------------+-----------------+

1. 2.修改默认字符集

(1) 最简单的修改方法，就是修改mysql的my.ini文件中的字符集键值 (注意是utf8而不是utf-8)， 如 default-character-set = utf8 character_set_server = utf8 修改完后，重启mysql的服务，service mysql restart 使用 mysql> SHOW VARIABLES LIKE 'character%';查看，发现数据库编码均已改成utf8 (2) 还有一种修改字符集的方法，就是使用mysql的命令 mysql> SET character_set_client = utf8 ; mysql> SET character_set_connection = utf8 ; mysql> SET character_set_database = utf8 ; mysql> SET character_set_results = utf8 ; mysql> SET character_set_server = utf8 ; mysql> SET collation_connection = utf8 ; mysql> SET collation_database = utf8 ; mysql> SET collation_server = utf8 ; 一般就算设置了表的默认字符集为utf8并且通过UTF-8编码发送查询，你会发现存入数据库的仍然是乱码。问题就出在这个connection连接层上。解决方法是在发送查询前执行一下下面这句： SET NAMES 'utf8'; 它相当于下面的三句指令： SET character_set_client = utf8; SET character_set_results = utf8; SET character_set_connection = utf8;