1.Connections could not be acquired from the underlying database
原因:從描述來看不是密碼錯誤,也不是路徑錯誤,因為下載的MySQL workbench設置了自動更新,mysql-connector-java版本更新了
所以maven重新導入mysql-connector-java版本
2.The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
原因:從描述來看是是時區的問題
解決方法:1. 在jdbcUrl后面添加時區屬性: "?serverTimezone=GMT%2B8"
2. 設置mysql全局屬性
show databases; show variables like '%time_zone%'; set global time_zone='+8:00';