MySQL4.1.7的字符集问题_MySQL
环境：1、mysql数据库版本：MySQL4.1.72、mysql驱动程序： mysql-connector-java-3.1.73、环境：windows平台4、安装mysql数据库时指定character-set为gbk
遇到的问题： 采用jdbc访问数据库，jdbc的url： jdbc:mysql://localhost:3306/club,读写数据库显示中文都正常。但在mysql的console上查询，中文都显示成?。 原因是：MySQL 4.1以上版本增加了几个变量，默认的情况下character_set_client、character_set_connection、character_set_results 的值是latin1 character_set_client | latin1character_set_connection | latin1character_set_database | gbkcharacter_set_results | latin1character_set_server | gbkcharacter_set_system | utf8 所以在console看到的中文记录为? 解决的方法是：启动console的时候设置default-character-set mysql -uuser -ppassword --default-character-set=gbk test
character_set_client | gbkcharacter_set_connection | gbkcharacter_set_database | gbkcharacter_set_results | gbkcharacter_set_server | gbkcharacter_set_system | utf8
总结：1、MySQL4.1以上版本、MySQL JDBC Driver3.0.16以上版本，jdbc的url不用再带上useUnicode=true&EncodingCharacter=GBK，jdbc驱动程序会在连接的时候自动检测mysql服务器的变量（character_set_server）指定的编码，然后将Java Unicode string转换为所指定的字符集发送给mysql server.2、MySQL4.1.7版本数据库，character-set为gbk，如果console上看到乱码，启动console的时候带上参数--default-character-set=gbk
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