navicat 连接 mysql 提示Client does not support authentication protocol requested by server错误

出现原因：

Navicat没有连接权限

解决方法：

重新赋权给Navicat
1.use mysql;
2.alter user ‘root’@‘localhost’ identified with mysql_native_password by ‘********’;(注意*号此处省略连接数据库时的密码)
3.flush privileges;