1.运行show VARIABLES like 'char%',发现character_set_server为latin1
2.把set character_set_server=latin1修改为set character_set_server=utf8,即执行set character_set_server=utf8
3.发现每次重启mysql都变为原来默认的latin1,那就找到mysql安装路径,在my.ini文件中加上character-set-server=utf8,这样每次启动character_set_server就为utf8了