spring:
datasource:

url: jdbc:mysql://localhost:3306/yhjf?createDatabaseIfNotExist=true&useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver

jpa:

hibernate:

  #     更新或者创建数据表结构
  ddl-auto: update