Mysql依赖/用法

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>8.0.27</version>
                <scope>runtime</scope>
            </dependency>

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/He-demo?serverTimezone=GMT%2B8&autoReconnect=false&useUnicode=true&characterEncoding=UTF-8&characterSetResults=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=true
    username: root
    password: 123456
    driver-class-name: com.mysql.cj.jdbc.Driver