解决Navicat for MySQL 连接新版本 Mysql时 出现Client does not support authentication protocol 错误

**出现这种情况的原因是：**mysql8之前的版本中加密规则是mysql_native_password,而在mysql8之后,加密规则是caching_sha2_password,

1、第一步登录mysql客户端；
2、在客户端输入“ALTER USER ‘root’@‘localhost’ IDENTIFIED BY ‘password’ PASSWORD EXPIRE NEVER”；#修改加密规则
3、再客户端输入“ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘password’;”#更新用户密码
4、FLUSH PRIVILEGES;#刷新权限

重新用Navicat for MySQL链接mysql

OK!