MySQL8.0理解数据库配置问题（spring）

public DruidDataSource getDruidDataSource()
        {

            //数据库连接池
            DruidDataSource druidDataSource=new DruidDataSource();
            druidDataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
            druidDataSource.setUrl("jdbc:mysql://localhost:3306/book_db?
useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC");
            druidDataSource.setUsername("root");
            druidDataSource.setPassword("root");
            return druidDataSource;
        }