jdbc合集--oracle+mysql+mariadb
jdbc連接Oracle數據庫
https://blog.csdn.net/frdevolcqzyxynjds/article/details/104722087
jdbc連接MySQL數據庫
https://blog.csdn.net/frdevolcqzyxynjds/article/details/104719983
jdbc連接MariaDB數據庫
https://blog.csdn.net/frdevolcqzyxynjds/article/details/104717534