使用mysql时，若使用了过滤器还出现乱码，得先看界面编码是否都设置为 utf-8，数据库字段的编码也得设置为utf8
需要注意的是mysql有个myinit的配置文件，里面需要修改的内容：
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]
port=3306
default-character-set=utf8
# The default character set that will be used when a new schema or table is
# created and no character set is defined
default-character-set=utf8
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相关资源：彻底解决C# asp.net连接MySQL乱码问题
