pringboot和数据库进行交互时要配的玩意（杂）

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/book_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: newroot
    driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
  config-location: classpath:mybatis/mybatis-config.xml
  mapper-locations: classpath:mybatis/mapper/*.xml

 @Bean
    public DataSource dataSource()
    {
        System.out.println("dsaihdaiohdoauofhuafduabfucakcnla");
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setUsername("root");
        druidDataSource.setUrl("jdbc:mysql://localhost:3306/book_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC");
        druidDataSource.setPassword("newroot");
        return  druidDataSource;
    }