配置

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/数据库名?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=123456

maven

         mysql
         mysql-connector-java
         8.0.21


        com.mchange
        c3p0
        0.9.5.2