#jdbc连接-mysql数据库
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/file?createDatabaseIfNotExist=true&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.username=root
spring.datasource.password=ma123456