折腾了好久，后来发现是版本问题，驱动和数据库不匹配导致。
原来用的是5.1.37的驱动。数据库是mysql5.7，可以连接成功。
就在我把数据库换成了8.0之后，所有的买点啥都报标题里的错误了。
换成了下边这个驱动就OK了
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