配置数据源和配置jpa的yml文件

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: root
    url: jdbc:mysql://localhost:3306/order_system?characterEncoding=utf-8&amp&serverTimezone=UTC&amp&useSSL=false
  jpa:
    hibernate:
      ddl-auto: update
    database-platform: org.hibernate.dialect.MySQLDialect
    show-sql: true