解决：

mysql  -u  root  -p

输入密码登录mysql服务器，那个ip是本机ip4的地址单ip放行。推荐全部，后面123456是密码

GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.0.109' IDENTIFIED BY '123456';   

全部IP都放行

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

刷新权限

FLUSH PRIVILEGES;